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 0x3647ca4137bd223f63e2b0647c494e9d2ace99216e70996673852306ea6ea420. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cca04e89-9fcc-4006-a3db-d58f9902a58c.json and https://artists.proofprofile.net/proofs/artist/cca04e89-9fcc-4006-a3db-d58f9902a58c.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 0xb53cd82dc7a3c49b04139e6b555fabadbaa3a8209a3ed4e706ec09f968ea6901. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2200342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce01d9ce98cdb0cb27afc94658d32c4a8b1b93ef1bc2986b2b1a8b88ebc5ddb0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRRGE2200850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e4175e96f7e515f2ee7abbfd84684e9e52e4a7ae7672cfbb7e536f22ae17e5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRRGE2200858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28df351167d6bd9ecf3f5011fbf7023847183d708488213de9dea4807dd4811. 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/BRRGE2200852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8a40b49da949880234722ccd9d47cdeafbe035526b9fe6e297f3f017a2b2f9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRRGE2200848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53cd82dc7a3c49b04139e6b555fabadbaa3a8209a3ed4e706ec09f968ea6901. 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/BRRGE2200342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91a7ddcc274a3fa8a4797bbf419e795ccf2f58ca54e3ff2f5d89674f62f8f2f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRRGE2200862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9baf16ea28af38ead36bd45ce1302a792b0a723c543e5ff9da14acec45b322. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRRGE2200860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccebf7f6e0b22071d3585714a17ccd455aeed23ce8979377b5196c59b3754362. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX8JN2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6ba0595d1d4c670a926328745ee9b86ee9cf29f4bd01cf7798c2da816198cf. 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/BXD3Q2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443c86e6db381bb72dc0f6ebdc367722315e8a0f29fc8977d52208d8712d51e5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXD3Q2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5676c45e4dc245666d3d455d0f545bfe8b02851138d8fc2c597fa106018e8d. 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/BXD3Q2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f9fe4eb374db47f57c1108f144626dc3dbb578d6a52ce04b76368a64efaaa5. 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/BXD3Q2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d36690fe50e00f70c0a105ec00ae54bddaa5bdbd978bebae96790d6b84408bc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXD3Q2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52badfbbb31e751294dd82a71b6a2fcbd6ded02b3df11cb0741393d1139306f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXD3Q2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2ab06a53e5a6bb11e5f614438c1387a60fa6776840b39de883b27ec4fc8a56. 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/BXD3Q2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130cb266398448ff37c4175cd70160875c7f6a7cfd6fa87f4352af753e8a046c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXD3Q2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4731ccf4f6361d719c430151f75dc67c6516427dfb9106c85ccff2e4f1093bd3. 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/BXD3Q2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe963d390e984c1b106bb63b9d3da970609aed90305e9c15748c122e3ebe82d25. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXD3Q2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89867cb14d1e20cdc38e11b9d1d7d69469286eccdc2826cdb32690ed323a9e1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXD3Q2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b85b572f722c1c3f919c2e00400da8b6e8786919f10f696df6701647fdd6f87. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXD3Q2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090675631e2fbab512807241ed6e743246172b2e293364e7dea2097908c32cbd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXEU22000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819e88a2fbf9d21da4c81d636e99480e48a662bef7b6fdee61c2dc28da0447b8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXA412000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ea8ee1dcf29509c9273c8a91867d3445d711f23d877decb0d3eb97fbed2911. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXA412000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbfa9ebd44af7ab4629b4739407198b6e5d1db069628ed01f024b424f3cbc49. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXKN02100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daa58e0f4ce0376ea1b7df237138913790a5583e10f613dd5cedd8b764a3f6e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXKN01900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9703d5e81a1f549fb65f8f0129798deea899c71b54af06f70b3cf184135b3579. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXA412100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff567fc4babcca446857f49005baaad79e00cfce77d09fe5d68a7ce0ec5a4b7. 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/QM42K1771568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bee679d0e936767b9232c4178b548c3f4a904ac5f8331e9f485c89d7db837b8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM42K1779160.