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 0x320d437b9f37085a4906989295f05e4367d0687853d61727827c027534f70358. 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/3995bf85-edf8-4e9a-85f5-a1d9c76ca6c6.json and https://artists.proofprofile.net/proofs/artist/3995bf85-edf8-4e9a-85f5-a1d9c76ca6c6.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 0xe07a21c972b59d36f992383d8cd97d9b1e1cca29e1cea3b282db85a1d3b4dc5b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:59:56Z), 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/GBCRL1700038.
Nothing of You Left to Love (Acoustic Version)
Nothing of You Left to Love - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9aac06420d06d1e2745323b30b16962367ff1304a9c25778798c33002b0d09a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:28Z), 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/GBCRL1700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf110e2a21c4b848ed0152f9c69bb2563c3d7a4ab10be5217ca2ae78640582b4e. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:17Z), 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/GBKPL1792093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafff4673fb3ed1cec88ab19af79444cf0527443b4d1fe9fb72b0f170c19275a4. 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/GBKPL1822342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dcd8064b250755fb86d4deec17bef309772c857276180c4b3cb32f75b348b5. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/GBKPL1823681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da9cc7aa9137427ba5d60a1ed216cecac5051f574e9ea48e167b0a1cf4b24e5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/IEJUQ2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065db8407567fc64071414f1f3ac801e7c49a4eae0e22e39c22cf182fd3394cf. 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/IEHRA2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2055f26522a3a7d93db4e7aacf101b9d9376773623810de032be9aa75c4ab5. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/IEJUQ2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2fa00d43e3aeb417b2eeb90640a0369a46754d4719a020291bbe5743426125. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/IEJUQ2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cf9e6a9422fec0cc4f145e0e87c821f733664ef9fd4159d0a6e163fa5e1cb5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/IEJUQ2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc044f9be46e2b05933e61f611bdae71c8bd70cfdd0186d5ed560ed486af0dc03. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/IEJUQ2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb2e99676bb1f3c7b17b2a808d3ad4b1b87eed2fa72f730cc24eb4cd01318c7. 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/IEJUQ2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719b86df5b8359dd0cefa760c3b6d94b6588b4cac002c366f4e283ac217b11ba. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/IEJUQ2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb491749b051ea164f5a310b0d9a357813ddc8455553b7256cdd7c4c7d94b6be9. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/IEJUQ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eae33d49924bcae05664ab635619b47d5674796137ecba6199f362f800c5a4c. 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/IEJUQ2400001.