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 0xa6350b40e81f72e39a763dda4821d899c0a4c0e54ef8aba1bb82910e72e4ad6c. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9042dd1a-ad64-4079-9b08-a98eb27cd792.json and https://artists.proofprofile.net/proofs/artist/9042dd1a-ad64-4079-9b08-a98eb27cd792.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 0x48725961ae36b38194edb319e739dc777eb8d3f66ee57d0045f225a61390711a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZPLR2409453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ac65bd9e580865b5c66018e33b6b55bc9f90491e5604e5e6ce421ee29f7251. 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/QZES92584920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233f11031dc5108619cc2c608105d61dcdc9b44933abfa47bfbfeec30146f273. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:30:02Z), 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/QZZ792571442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5de3d29c115e7f50a91c7d660aef8c2f570f7ebee9923313af44b2a2fbeb6a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:23:22Z), 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/QZZ792571443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b9ddafdb57467ac9eef991a3acafdf7de20a548a30e4a81b139fd53365b101. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZ792571444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab556a04b6be33cf6fddf47aa94ceca7de8d51825c742617ef489e92859be94. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:00:02Z), 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/QZZ792571445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a6809c68c632c1c8af8c5ff87cff352763d2b8f30b02c9a18d404c81fc7ae3. 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/QZZ792571446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f6a094458bbf7931fd239e3cff4653d2ca7c97963d74d25f4813d052c8512f. 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/QZZ792571447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676cc9317fe69b3235116732dbda67a3944420666f7de8dbe14edb9c6a5e37e9. 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/QZZ792571448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e8b51619e1210ede5822fff35f0b3e44a2cffd8b7074a12b05b24e3e586a5a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ792571449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a94ef53076a61f19c72b03bcef870cb109d1ef93f51f51adaf6fd61cae16419. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ792571450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3dc0c1ce7f5e7291fb557bbd0151bdf1ee2e26d98fe4ac558fb69244d39d90. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ792571451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dc1ed6cc605f9773b8231be6b4d29572116ae153d7e25755bfffcb7ee02a71. 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/QZZ792571452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde505e8f05ee33a1026e74df704d26f66c40dcc255dc42ac2dabc743cd731bc. 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/QZZ792571453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1736c9edfa2711923be67d15a4cbecabfb76330000aa3b935f5d94fd3ce0cc. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZZ792571454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c473a2c625cf679c49cb7de9bf04c7a5e26da0f655ed329d9f5b9ae870da65. 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/QZZ792571455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa216181824dcecede4b331b1fb259db5e1bef9463713c5f9d7edcda7c5a153b0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:03Z), 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/QZZ792571456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a77de5bf80b84577bde51c0ee91e87ae436f273508c9d13fd66b5f06963765c. 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/QZZ792571457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d798ed5e1721feadab4f01aadf4d4952641aacfabfd398697f8f70ffb89bf39. 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/QZZ792571458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664c267936f1fa962fb427e680d15c83a36c89be9fcab97131aede0aff892ae6. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZZ792571459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab07c21dd279bf1085727f701bebad201e9ea8bd235389ceeca2928e03108eab. 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/QZZ7S2502132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dffae280ebf497f363d417bfef72e92bd6f5f547a136224c826142d4b4be7f6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:45Z), 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/QZZ7S2502133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd70f88c5dc0b007ebcd2fe027e33633dab85030d208a7bd025d41348e132cd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:09Z), 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/QZZ7S2502134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc317d95509c0eaa73863d4f013478c6bb13c1de7ea82bc3259a5508c532ebfed. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZZ7S2502136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4506d5692286d9b2d94c6a716a0f3660b9e88c5bacc8a740f0fdaee7e61c6a. 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/QZZ7S2502137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10364303862d7912a45432fc80b83204d9a142cd73eaca972041436e60c0c38c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:21:48Z), 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/QZZ7S2502138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9fe7c5e0e2ea711d9a7d4faace661b2807bb15016b30001f23f51542a0b4b6. 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/QZZ7S2502139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970d17fff65b13726b3b0832ef95fc7cc6159c54923f047d04c706ed2a813864. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:47Z), 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/QZZ7S2502140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95db178d263e3731f397f21b7f523f88a7f4315deee27c2e6d3b86ecf812ad9. 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/QZZ7S2502141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf364c1eadfc1b54e03f857fd7e743d707f15a77d67dba38150bc335dbb1ec3f5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ7S2502142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b21f024dbd9fbd94b3cea6f896b71ffe5d5600889cc5bcf5f6d6787ce59828b. 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/QZZ7S2502143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d48e761ae523db7c7d847c23e9bb7c9f46ec85b64fe54b0d1ddc910feeef44. 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/QZZ7S2502144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aa841314ebcf0411298c801845f6415fefe0a03ba402f464085b89a674a2dd. 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/QZZ7S2502145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0e7e28e2ce55c71dae628c68ca27f845a213c9efc5009dcf83730ee1ae86bd. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:27:39Z), 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/QZZ7S2502146.