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 0xa5a792e9632c5934a9dd4f3314f85b6537e1a106cc693656cb9e9a34adfc43b8. 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/07398c78-9b8d-423f-a43b-83997ff7f6b8.json and https://artists.proofprofile.net/proofs/artist/07398c78-9b8d-423f-a43b-83997ff7f6b8.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 0xc90d3429b53ba150326d19fc996cdd52c4f57de34152f04c18304c8c9ea20348. 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/FR9W12365948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6931bdc89ef8d4cb029529922a6c6d5b1cd15f5241f6b28daea7bfbeea03c5. 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/FR9W12401183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ca4b67ef3108c856d4139dd780ab599dc6e0f214e717eceb02f64c258caa71. 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/FR9W12401184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64842fbae9b510399865260e40d624eb3ce3da110baa8baab71f885d3f8b4b29. 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/FR9W12401185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6651d48febdf824a05b89df36b2407d7bd7ce8e41a652fb1cc27eafa4b3e0a9d. 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/QZFZ32419419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97605a6329cf7936e1ed56bea8fabc00378ae41e6ed304934a175ea79c048b9. 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/FR9W12401186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd385c06bd5223fd8ce28e9f5efbdaa6569fe8aa03583cc61902c2e5eefa7a3ef. 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/FR9W12401187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d93c79d6bfe8eb142b40fa46e3f726f3f4eb676cbbada737f5c57268c08e23. 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/FR9W12401188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1f9f0104cf18460aefb534e2e24e1b080cf88e63b75a75c80a1a2c3f57e2f2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W12401189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34550031199ea34df98a8a4546a90b63f09df3a94e89b767a5b8051fdd74b10d. 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/QZES82451565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23c893cb72cff7c2a9519791988d228e29a7bfe6de42ef40bfd201d0b3d1a69. 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/QZWFH2384170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb067577702a79096f2e83ab36b91fecef56d00e701f319308cfc995e48d1ba7f. 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/QZTBF2397872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c15688e13dddf8c80d692c6ab931e90ae9a25ffb0926700b51ffbae3df7354. 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/QZTBF2397873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb68a623a7fc5941f50957a40c648b9118fcdf6b27849b7f956bf669201814e. 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/QZWFE2382467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8956f9af734e6d16865e4fda6936ba5b44bbfff4d15f1c8d6f52e9623590d6af. 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/QZTBF2397875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7069d568433f9c8edf3ac25c8e57d07df6a0fa26e4da751531db7f13728122. 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/QZTB42387948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aae23fa97896ed340ecbd0ec3e95b6bacb1141f2777b86486765c281832f2b3. 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/QZNWY2308124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44744856db96eed514d425308b2fb3b6bb70c185a62ad76ed9f6223f2c8f1055. 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/QZNWS2370378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90d3429b53ba150326d19fc996cdd52c4f57de34152f04c18304c8c9ea20348. 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/FR9W12365948.