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 0xff5f8278d811ea117061333e80121c3cb7ee80297bd2b940a1977c39c7cda6c0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc557189-173e-4aad-b438-2c9bc5a8b3fb.json and https://artists.proofprofile.net/proofs/artist/dc557189-173e-4aad-b438-2c9bc5a8b3fb.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 0x6849b13fcba75b3867fdd29f7b8cfee56eb05b760c44601dd0496f16ac8df8eb. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:00:42Z), 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/UST8K1411007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ecec36a4c17c4f29b824046adcdc0ca7fec3a05f5949cb33a5661421978cbb. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/UST8K1411008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6335c7593082a0fb15c108725dbbf6320493de1e43e664dfda78a5154a02494. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NOWZ81601190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105f4e171fd0aebe532a49556b24f80134cc8a0846e28701fc9146ea26fc288a. 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/GBSMU5932161.
Decide (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)
Decide (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfe73269bef4b0ce85ff6e4c43e63eee303e6b7916ffc19d1fcd6670571d387. 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/TCACJ1538709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d0f9600f6e55fb6359bec30e144c20c0f853e45185142c50e581391416e4fc. 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/TCACL1624693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8f7fa32c2fffe95e84a33f49cf76b5b9e8f085f8b8f413691d5a6179ce613c. 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/NLRD52257966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a838683d3480f8ed4da42c30e6d39657501a7750873b5dff0813535d7f46b40. 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/GX89G2385771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593b780a06a8041d426b3d04524d367d3c9f6fc524188791ec071fd87a03b21d. 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/GB2LD2110373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8d258841899b50571cbdb96e6916ae94fbcac1e8fec69bc6600e8d87b04b12. 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/TCACK1507440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfe73269bef4b0ce85ff6e4c43e63eee303e6b7916ffc19d1fcd6670571d387. 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/TCACJ1538709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000c03190d41bc232105840bcd3215ce1bb0c2b5a99edfbd82caeb4c67739ee1. 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/TCACH1539300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddb99fe93d119b93a15ae44c31ac0c4322f024acf600b4e991c96c4f66a8f5f. 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/CA6D22100506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a938e43a5d0d1cd49175e6fdad1aa9f347b49af6e400de1a197de4c0554bf0. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCACN1692874.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b709c3d7dbc563e6155b1e27353611f0ea2841a58dad90e12a7cd4710fc1de8. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZTV32250293.