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 0x98356260d9da6214a75e3f7446a673e17b085bfe739c318bfa532558a8e70285. 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/cfc289e3-f8d7-4cb6-9fa1-cd475e39032f.json and https://artists.proofprofile.net/proofs/artist/cfc289e3-f8d7-4cb6-9fa1-cd475e39032f.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 0xae3605de27f1055d8b67b7c5c9923d7ed4ef3c97837320f14f88485f39c01748. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/AUCN31710029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba4708a83addf299da32b602228fec22052a745c20fb17894e7aae0696f8000. 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/FRIDO1811714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe791104981d49cfd281c195ec7748b485250114dc923c03c9883b3f39687fae1. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRIDO1811425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa508bdeac49ebf329251673007757d8c7d986eaf28a2437442dee1c4f63ba07. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FRIDO1911074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba885a210f5924d7c1b4606b9841f9e1f49ee5c6b4c7fe527f7dce56ee29461. 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/FRIDO1911073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bfeb3ad5db29f02e8a3c9b45caf3c621aca920e76c97c68859a255af8718ed. 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/FRIDO1911075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51614c2ccf18b51d34b9f09f9fd0d9d9163ba6e70981d92cc3cc756bbcb4ae48. 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/AUDCB1701642.
Future - Animal Feelings Deep World Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe442f769283aa7d0749c330dc6a418354bc9730839d0d924503d510409a58529. 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/AUDCB1701643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc400789bee232948654dac9c5297bdd3fff85c53cb5d5169e409ffd8ae5f88. 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/AUDCB1701644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f538229a9c8306bd6656546b872aa9296aff94b4d122f171d40960b6da4cb7. 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/USLZJ2057265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31ad0057c7545e3e66b7a539808332650dfcb1f60a75a1030153bc1b2281449. 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/FRU702100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26707eca9c8e7685aa6ddd9ca6c1baebb908b89042e47b7c96a85205fae26891. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FRIDO2212069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf81d36c70ad772fa1893b87ded458a584cdf13c1427f09d62ff0fc9abb120a1. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/USQE92200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cc3239788f9752c0991c8e6fff41824f9dea73720946369525b76f6b6c1da2. 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/QZTB32362962.