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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f44baa8d3a819e6a60d4b8956d8758d7a28b6e62b85597fcfed8682a80cfc8. 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/ffee9e69-85dc-4843-911c-9f63641e563f.json and https://artists.proofprofile.net/proofs/artist/ffee9e69-85dc-4843-911c-9f63641e563f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39bedbf53e141321652b5ae1852c785022b0d325ef4687a7310acd970ff23c9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ARF101500343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fd78319e607028c32ad5d63c0eba435de11a1dbd6223125e36afdf078eefd3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARF101500342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d3ec6228853104c67bc452a03a554b4c7050bf6ecd98aefc95e10730e1f57e. 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/ARF101500344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c81941995ec06cca909611337769acf6249ace868c8c4eb2a86a8a5f417add9. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:07:56Z), 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/ARF101500345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72254422df77cd17fb13367aa767ce751c3a020bf70c493366848177888f277. 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/ARF101500346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e8e84c7c9c016e3543b2465246661fe4d1024d2ab98637b7e8361ced0acb81. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ARF101600272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f63902d67f0b621b9eb8e6540c0cfe5ec8d9876139fd81dc0f8d78de0482e7. 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/ARF101900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ef0c3c514177b112d31ee64d17a818523486493ae8fdc2680ec152fee33b9f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ARF101900124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f63902d67f0b621b9eb8e6540c0cfe5ec8d9876139fd81dc0f8d78de0482e7. 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/ARF101900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64204529fbb70e698eafb5d917e75b0d01ddeccdd59962c1f719f14180e186b0. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:56:48Z), 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/ARF101800361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bbb4f32d75f771bfbcd157a8b18110606f8ab16763d0523bdc963ab524a908. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARF101900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc440ffc8b7ea6fb025f7d3957228f33db5de446214c144c29e94dc5c894be56. 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/ARF101900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ef0c3c514177b112d31ee64d17a818523486493ae8fdc2680ec152fee33b9f. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:22:22Z), 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/ARF101900124.
Apaguen Esa Pista (feat. Emmanuel Horvilleur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c70f1289cd593b74b8b7c063a1c25795954de1149be4efaff4ad1129df075f8. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/ARF101800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d5fc98fd014af39e7e38d9c6917822466b5c1ce962a13035c6ac9b39da2135. 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/ARF101900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f223426b90cf8f0954ea2ab767dbe4887a775cd6b2e3ab155e54ccc09fdc9c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ARF101900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b8620dfb54bab28045dc2a93ded64cb1df7b93a196d141cbcb5723d5eb4aff. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ARF101900167.