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 0x8cf9980213fa9f36b3c87e5deeedc2ba1ee47e06e510a8e8ea06a7d631e62d97. 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/7b109666-2dbd-445d-9eb8-a11406992686.json and https://artists.proofprofile.net/proofs/artist/7b109666-2dbd-445d-9eb8-a11406992686.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 0xce8bee94a3be56868587928ddad91c6b3688c31e1d9a8652c4b486f7530ec54d. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/BCCNG2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a8168d7947e6e96e4ff6ba10f723dd541038a380a31ca76395ca12efa154c8. 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/GBSMU7498825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6a8421f11c8abeb4587aea2138f2007746152848ffa452837e9b5a3e54f151. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM6P42316902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d9436827d1ae8b07cb18b25de92c65a10211cad9d778541db3bdb24d9c50c0. 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/DEPY32200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fdc6bcf13e5c0acf9004986519da9de038032021391098e5495073cb4a75f3. 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/DK4YA2140201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeba2706dbd3c9b2e9607a6ce347e3f2a0e0704374be48643f2e3c3eb024c504. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEWW42000577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7cc806571bcd0ee606e6c1c32bb5252563f6a3d6774ac0aca448ec9149f8c1. 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/QM7282029412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478185a274fdcc8c3ec50e61b438dc97e110b64634662df132a818119ff89d7a. 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/DEWW42000385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b52e77da28ab276d9b9e5cd5ffb994ac9e13da0045768cd46c92669812f3b02. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBSMU8110974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cd4b2d0dfbc67c168181468f7e4fca10fa6c4ba9bb2f7ddb6aaffc0b6da10b. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/LTF252000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88f18a90cd41031837468a4634ea57d6719f8cf0e8502a731c7a13a445ea805. 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/USDY41890481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd514a6dc04691d18a3f551f98d4d046e29be4f21b22f410994f75ba3d2aec03. 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/QZ22B1875663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eee0735f16bea849c9ef95cb1d54bafb210ecc1d1913b1993e3ba8b4f96448. 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/QZ22B1864789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e36912fdeeeef4ca0afa4df873b9b61ea0ea0f30005dbfc0ecf961fbab0c22. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZ22B1835795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ed0c35837c3c045cb99eb6272e4256809101e53809e0100d45a3a4e8f4ace4. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/QZ22B1787343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb542f1b92f5ba566bce4260e2dc0dafa8f0e44a5de8284c5783755f1cddd6d5a. 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/GB8KE1652013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6047561c0a261e154bcae1a24904dcbd5382f44445a7725d2b3a8d5e70b97f59. 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/GBSMU3074823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2622a1ad01e6819e198927cb003220b3d5b7fc20ae544155100778b937dc5516. 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/GXBDS2561060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233f6469e8255b7245274d817b7fc04420f98cdfbe243a4b84cfaa2555ef80b9. 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/TCAIZ2437669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b52e77da28ab276d9b9e5cd5ffb994ac9e13da0045768cd46c92669812f3b02. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBSMU8110974.
No No No (feat. Carl Wallis) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01355e3a7e1c3c92ea19ee4617af04b35d1374ffe64c9873695fb5338745e963. 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/BCCNG2200003.