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 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 0x17c546213f58b1ed55235232c05cd2029f5212f0a98baba5e8d1717c0a1e26c1. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc315db1-2fea-4213-b927-e339edb062ad.json and https://artists.proofprofile.net/proofs/artist/bc315db1-2fea-4213-b927-e339edb062ad.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 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 0xbfc15e0414147a09a32d082fdc9c24cae7a41e9d9f76da13f90be38d770c265e. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/ZAY591001088.
Broken Bones 2011 - Bluestone Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd11404690b4bd87e2ad43fe4b24695f46857c40fdda2f305ea8d7c509ee3fe. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/ZAY591101183.
Broken Bones 2011 - Brooklyn Bounce Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a00d47263980abf8cc837133dcbe2759f016b6cb5fd8dd41e575544e3a51e1. 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/ZAY591101413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2fe369a24a64682f3f0e68d013bc4c35163d44cea5fee2b067accf942e8097. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/ZAY591001079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851419fad77897a269faa9f46dfec725a12747c7623ea8a0b25c31bdc100e6a1. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/ZAY591201635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5252f01899857925ab3d060870e3c88de2a95f7cc8783647bde15ac1ab9aed99. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ZAY591201865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad56cd01c5563a246f5a9a8a3a909a25a96c7438472ba5741271bdadca98cb7b. 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/DEY472082320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa84eeb28204c495d3895129247eb66bfa9c3d7d382aaac4749d68fb4bd600e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEY472082321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa330bf9b71b1308cfef7ebbc35452370a57b182484ca56698e39ec25f1952e95. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEY472082322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b92817399b91c0cca0db32f552c12379e400c5aed33b4449a18b9770a6d163. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ZA56E2002671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbdf9476bc6bf0e173fcbb1864acf927b1b3e92057b30eededbbb7bc0161573. 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/DEY472070042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0790e0aad410475949796fddceb59cd383a9af2ddac554d7da464bd04a6894fd. 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/ZAZ252000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf7b63473ec274195c840fa568ef3577020179f2142ba20682c0f8ff29bd538. 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/ZAZ251800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd226cbe34e8894f8b62093d2f88f7bf6313fb51e560e18ee2950a8c9842f013d. 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/ZAD6D1400026.
Human After All - Guy Herman, Chris Sen Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edb0d84840d27469cdb6ab6fe5a546ec16fdccb7f03115325be4835e4705ea2. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/US83Z2041767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab019d901cbea088fa30beae535d986bd163029275ff80c64127296ee741d41. 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/US83Z1923483.