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 0xcd9ff9f0842aae940fa462d729067aa070f12d23f206dca298654ffe12427419. 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/b24cb6a7-b8e6-462e-9054-5b0be7dbb614.json and https://artists.proofprofile.net/proofs/artist/b24cb6a7-b8e6-462e-9054-5b0be7dbb614.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 0xf66ba925dbb5ee83f06d179b9db9c961202078c1641fb7e4d76a906e6c3c7722. 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/DEUD92384592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cab0faf883b995932c69c3b971d5796ac4adfaad398f0e18e1143e3d6868aef. 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/DEUD92384593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda37e34457feebad5a06118bd554f85729e94bc4c720833f445c0d281f62d7b3. 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/DEUD92384595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a21c04c032cab98e0bec9dbba9f30627eeeeb241f9400f89a7c8dc5702dfec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEUD92384596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7394b794292d57c95812e1bc069372cda70da3a35c446b4095d3dd015946b89. 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/DEUD92384597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4f896f637c42c1f58e535b68a650df027523a8616e8b8885617783e12a8f20. 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/DEUD92384598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc16240256d02cdd30405eef5393aa0064a42f9ee7278b91819d912546580d5. 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/DEUD92384599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89f383c9c7126766fb0746f12f41bb12fdf42549efdc782cd17c5de3a6de152. 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/DEUD92384600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8c1f2060e6a9ba91234be4b22adc5ba543a5bba97d8cc392fd8f1820a1a69e. 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/DEUD92384601.
Gentle Sleep Rain (Silent Lullaby Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa426b854defce5ec86ada49800f33b2fd1ee98e2f4e42caea5717c089824c3d9. 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/DEXN92337198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b9068afb95d6f4b3267857f55ac97353dd391f4bef3099c09ecb84a41feee5. 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/DEXN92337204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe156afe6f2117faed4dc9156b1abdc6019bedee5fc01eecd58d90fb15df5fe7f. 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/DEXO12372229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c6e78f893cd16e32f19fa5423bf69b2ac877f22aae0faede3bf337d4712000. 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/DEXO12372230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed99a87be51b862f62d5f3882454dc50dc79c47da1700329e145ea4d15237b6. 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/DEXO12372231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4329e4f9e6922269c76bbe1e70348660624b02e480e40d16ce0aece8e55e3d17. 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/DEXO12372234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e09493c84a40002edd99af6c9b93f50fc592761193f124c2973dc2d566b84a. 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/DEXO12372235.