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 0x439c37fa4ccb54b292dcd2d5ac5feb92be429c5f3b4b8ef73a9d16515bbd4e54. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec0464f0-b689-4f7c-91c0-a4236db093b7.json and https://artists.proofprofile.net/proofs/artist/ec0464f0-b689-4f7c-91c0-a4236db093b7.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 0x5e900152904117a39aaf47ca5eba82623be84bb38a4a9bc20a3bca55c8ad95ad. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ES5022102136.
En Segovia (Hit The Road Jack) - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb240c893abe527ed8fb2c4c01ee70a8fc0663ca0ff351f228dd6b86eeaf7db97. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/ES5022102138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15728d4d19777ecd4e7176a5852b3f1265e403a50900d45035978ce7d09f3c19. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/ES5022102142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294cd0a080015c4eda38cfdaabf816c49f0d22c9e1b58b79b970a6c23e1f2955. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/ES5022102145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2c9329b4a5a72d6eaae1c608627295b9bf2ad3817ec51ba3d89a54d33edb02. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ES5339701230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cfccead92ca26c52d52b083c8b8022f7fc2c10ad29bb46443ce61a8ed8aa6a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES5339701231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e12d6e74564832b3805d0436b3e55fd6b66f64fcee1ab7ccbf2a5e0aa67d458. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ES5339701232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b45075c71c88713c4cf02c143b500661ef6aa22f0d0fac957b87465e3b1789. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES5339701234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e90030ef3ca5313cf3c0748818570ba396aeecbf1a97a04cbd203e658c93b9a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ES5339701238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8569a968f772ac58e866f2d5972cb293baf9dce6f8d2dcfa182a1aad0ec73174. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/ES5339901353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0521adbde379b551521bf8eff7feab3f093f7eb6294b7f203fd6b38cd5934124. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ES5339901354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45f7ed56acf039088bd84a3e9ed22f7e70724901e3226b7b719de979841ca12. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ES5339901355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e40e45c4a792e0af836ad27ed9a91ac6f6bb4583382fdb0f0551bf72c512fdc. 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/ES5339901363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e900152904117a39aaf47ca5eba82623be84bb38a4a9bc20a3bca55c8ad95ad. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ES5022102136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15728d4d19777ecd4e7176a5852b3f1265e403a50900d45035978ce7d09f3c19. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES5022102142.