1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034fc9a0850727e348224fe30618739a75222ac1b67a7d270e35c5e02ad4c527. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d3dfe37-1c5c-473d-b6e3-ed4743882efc.json and https://artists.proofprofile.net/proofs/artist/6d3dfe37-1c5c-473d-b6e3-ed4743882efc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4391e411b0b74018628b2973181874c5ded56f590a51cd7b3b10e6315d38ca1c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2250578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090c2dd9108f0024c4fc5dd9c6774fe51da7512ec09a3f206576f0717ba4453e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2250579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27f6f1d976cde7c103757668957c6757a3d5d85382b46c561730613c29bc7a5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2250580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976f8c83d6056c54252504b9659dedf81a3f79a374434d6afe788fbd2d83057c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2250582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a381d977f46336570240591943302bb830d0cc6a00d54cd7dff0915823b6ab. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2250584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea5024df837c286c5526b975603358b26320b8b8f13370114c43645a6eb9e66. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2250593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698629184ea07bbf5c81a64681c358817c4dcaf69fc8e7fb0a82379c8c3a81aa. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72263427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95571933da48a34cc39a20f82292ae84cf21fb46ba98b35b812f93c11839ea73. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72263431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c83f50899c0b1a017d5df4773a712cf18d758f8edf3489ffbc3b15f145bc74e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:58:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72263432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b6f174f85751ecb60d945ece3df9251380f7d334404f57b57664e23297f3b4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52302443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d64d65b70e37681c67a3a711ff1ce843c1e5ba4c31a9013cfbe35cf4e75fc2. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:08:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52302445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403b88db2b8bcea349c334cca363c25b2b75487bce1f7986c251f82e9b52cd51. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2363916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf524dbf473826f0bfc6257574e44877134ef74c905eef6479e50ecde6650aaa8. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2363917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbd3b56d8f8ceeac04de6445be23f4dc0e69d4e1b38cee7b9a9df50f55f953a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2363921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dd03d8d7253620db9fd7308bb7e2ea9009801a82ee4c7a74377ffdf03430d8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:05:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91755635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ef12de8ffcbd0185d1f8553256865bd712a398cc629588d3686da2eb095a0d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91756469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6944424cdf0bf211d03f39131d85e6fcedd58129c3dbc61164439233247dc4d0. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91756471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d67fa485d2c39fe3bf9424a0b9bfa16baf4411c61dca9b6cc8c2bf5e59a731. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91756475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7979c3703058e8a2f78db1b7dc04bb10fd513128e78c943ad07c6b2c287f3a9f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91756477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f53d5694ccc7f3e9970d2e75f691f0a3a0be58985e88a3933deff9f73393f4f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91756479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f555e5b9596d3348de83f54e4bfd5a02e8821495f8a4011d0cba7f66d7ce8b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91756481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c2255bb8917c29938195527be3c63c3d15296e4db66739026950b1e8a91e30. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91756482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5648de97072a0bf26d9792759bdfed169f16d440d77b73d0eff078b608523c7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91756483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477125a90e9ee2a4338e01cad83afdc4acd8cf8243e1dfaac675c3cd1e687b82. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91759632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ae38751fb3a29770a7138894d7a8e545a126eca9ab0111e2bbddb60af6b34a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91760913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac45b9f8248091f757c38b50d42b74ecf009be6bbb99f83c0a2002bd4f14b0e. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:39:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91762252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6e4ddae4c96d0764f0639b5243919b041c4cd32e75fc97f65352031bc9bf27. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91762253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80da05c6edb0a56119b2333067ead45f43194fbd790a26aa72009bf9cbf8db16. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:13:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91762255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9062977369935b803ae7c24a099371774b569e8381fed20623334ed7a58b300b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91762256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d436686c1257ef17fe0a328392561684f8c99c0937923a3ac2544fef8bb37e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91762257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be99db2a7824d81f9ddf3b02a4ed3752bd51122328b0a38c3daf97c706df5c4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:52:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91762258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990bd8abfd395fd9846fa2a0ac41e84d847ce19488bcd55b83778f7538b19e9d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91762261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc521a28b58288786ad90e61a9e668a4e6050ed6940f263e9f81bb546e48cee93. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91762262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe4db0155092909be8daaa7484af051b164e2377f8b23dbc8901a4c942f752c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91762263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a73233c57cc0f104cf7419d03283ffa65149dd87226c5d3927c86af936c8bcf. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91762264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0f3a0505d740a551341633c2fc1d372fb5094c6f13ce8a3e4faedb19180e38. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:25:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91762265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31709a7d2c7770480673f87b32eeb761676da6e4920dddfb1709e48ea0c53675. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a365e34320b5bb38688f96cb4f8826ea10ec7b8f4deafc123a2b98378374ec4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:27:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d75f842182abd5d5199d499dc27c5d1d1d7dda2fd00dd72c0fc20ca2b9dfaa. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fa380e62300ebcbf38b3ef101febfbae980220af4d1e3c059591075a694375. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35ab82767fa119e2e52e83bb16bab3a2fe47a8562826235af797ffe16d197e9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b5e55bb7f4c1f674eaf183038cc9351940de0ccf63018641849d571f34bc41. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4f722ac55dd1dcc1130d2f4d63146cfef6a07e1ee2f498213b6fd0c8312c85. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac41e3664bee6c0997c98ce16b37e0d730574d0a52467c9e0d5ff2f9c4f61df. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55a975b436ee325a1d47a66e353642287d8dd97f68409b8d6cc9cbdc651fc9c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82a3af160a38dad50bdabe5ba935c725815b3063a6b536f6b7d6d048a4dd85e. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8f189ee4b663daddd63160b899e14c5abf4863429684b25ee8d88627379b1e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab69532542c13fa637a0b39d8c69eed2261e2be76cbe28f3cf2bb4708bb09598. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352f1de3c3967a0a3d5ddae9fba59ac21dfbc4a18a6b2a8a2d0eef3818f46f5b. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:02:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91768248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f6835e074dc558be36802b0fd6392ef086d71d06de9bf2927a529bcb6a3eab. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8e8a2de61b201e13280f8f87c32906bdf06455a5e1730631758f23b4f9406e. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc79ff72edce5066b63396a5f2beb50e0afb76726e0bba1b6aa05e5acc679c97. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:56:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791acbcada62cb57aeb055f9cfd0935afe8eef45cb95d3336e761f3ffff4b0e5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418766be838c8910ce62dbef7e58425b2995f9b91f7154a2272c109d9aed32e6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:22:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cfbff421d9c5677994e43884a740a47e1f1a5786466a1424b62925baa79257. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83c15f8c5f7748c94ae7e88c2ca368215f938cdcae68b90c29abcd4c8452701. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79a3d5cdf5d0d80f661d34362e8d211656d6c5aeae616dd19abdaab309de6ef. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3d030bf3d425abd78a84c0b3abaef524db09e9c14d1f9e02942d6c9346ac73. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:28:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a273133f9c590362d29581c6ec77a8ea0e1c8c8a9a4877094572afc9cb050d1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475d944b7660444aed28f74a79653fd2e13b5d83dbe2be1268be3e1c35908403. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff3f2934ec5d0f811d2b0b592081117b5e0a15bb174f94fbc0b6ad264a72d4b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:03:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab6cc2626ba05e6a5c7c8972c8813a13d128236852a9bbc3d3f7ed51f0bf6a2. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8e8a2de61b201e13280f8f87c32906bdf06455a5e1730631758f23b4f9406e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91777086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef99049925339e0533f6a4407f61e371d7bf097648c8615b38373e7948b26b8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2338971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43938856376f34a79bc2172fc9e196486c85b6d8abec94abb8c49e140ac7a604. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91772270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a39f61d4f7fdadd3865b6540b23d4250249699298168923a9fa7cc4cbacfe8e. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72441089.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch