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 0x933f25b7e25194c98d900200169bf247dbabedefefc955f6606ebf6fa94e9d4e. 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/4fc5854d-b820-471d-ac1b-570f57702a07.json and https://artists.proofprofile.net/proofs/artist/4fc5854d-b820-471d-ac1b-570f57702a07.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 0x09a704f58c18c2240ba3d8c277bc2f27c2d0bba0b4a56268f5b74d1cfbf61615. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USXG91400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2559606846bc203df4b1a0e2c30e1d0067d385085048fcfecc6aa8974926f451. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USXG91400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a913989005e1cf08591c2748f283a718162086efe8a6d2eaf3164ac8e44488. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USXG91700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8e4609b70730f1cf46aaa3edccf2e3abf19ca90ce9baea0126e22335802333. 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/USXG91800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2c01be44e20884d2af7c39f52b82bc0b7354492e84b4be12c1c1e86972b3cc. 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/USXG91800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c03c5469269feb9125c8babb19a0f66d2f281ebaea02e2b6aac18b0bb699de7. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/NL1LE2000805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e381514979636171de80ea7967b04032d920fe91560a7d4daa303811f78d8a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NL1LE2000808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752949182414a1380b2e801b6498af532e07697e977f6d232dd840c54949e409. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/US78L2022106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0778821f3a2d2ea50eb48d0fb9df7a00406d81ae74b2a574a5a47ec06802e438. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/US78L2324108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad144d022f436cb5c17fbef9a7a12dfe4c291617eb6f4550b07347a2cba59de4. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/US78L2324110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369336a8d1a952f1d855a94e38009f18cc11a33ab6ebf9fd8458d961e9898dfb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US78L2324113.
This Won't Last Forever (John Hayes Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f12d5d627d3baed6feb3787d8f5e3e7ef1909e2ad957bfcc605b75b750e630. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/US78L2528606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83eb1c74181c23ea52aae6de854451346f55894079d51755e3a15fa9b3676b4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US78L2528602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d3b95db99ee83db54f5e240b1c8ac61d154dd16fcd8365c069570e42f891f9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US78L2528605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9697dc27477b5992bc456c12fd110406012a29805e14499b99f8efd8eeacc995. 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/US78L2528601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83eb1c74181c23ea52aae6de854451346f55894079d51755e3a15fa9b3676b4. 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/US78L2528602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e362bafe98768ab50458878b0a37d16d706e95ef3abf3e568ffba6639e30be. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/US78L2528603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361c1b61ecffc7f334297c6d5d79ff4ff354436dfdb0e85c2196f2635eddd655. 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/QM24S1827203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10def3196306ff0946c84e8c64f7e8c9e7be28bbe220606078a17786cd99ba8e. 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/QZNWZ2484769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422a4a365a5ce09aa0e2d937f78c4dde81483df1e2ad4910c22ad212715124e8. 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/QM24S1912549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec2f23d522aeb76795b5338182ee904ffcc4e82b05410fd6d461fd227678634. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CAN112500287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c300a6803a5a55a8194056105100042f66ed9f21b8d24893640fc9c8121100. 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/QM24S1844185.