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 0x5074b82f46a0f7167906f7a642952124cbc43ad0a0a6f544ef5c86867fba37ee. 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/fd3e0742-b6ae-4d1a-bca2-46a3fe1247a0.json and https://artists.proofprofile.net/proofs/artist/fd3e0742-b6ae-4d1a-bca2-46a3fe1247a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Déepalma 2017 (Compiled by Yves Murasca, Rosario Galati, Holter & Mogyoro)
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 0xf4c5e5935ea5a435f414c04baa4e4449b05d6c48499e7e7d238152cbbb536560. 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/CARE91600936.
20 Jahre Perfect Lovers, Mixed by Chris Montana & DJ Soulstar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32ad78fe4d02a325f173e13a4fd16f237db03d79a5041e144a58d44b6629b17. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CARE91600938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224a10411e1b04811fae7adb702aaf454f5b0b1c36e7c176fb929666fc4a9419. 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/CARE91600937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224a10411e1b04811fae7adb702aaf454f5b0b1c36e7c176fb929666fc4a9419. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CARE91600937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c5e5935ea5a435f414c04baa4e4449b05d6c48499e7e7d238152cbbb536560. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CARE91600936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224a10411e1b04811fae7adb702aaf454f5b0b1c36e7c176fb929666fc4a9419. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CARE91600937.
Endless Music - Balearic Ibiza Grooves, Vol.2 (Compiled by Paul Lomax)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c5e5935ea5a435f414c04baa4e4449b05d6c48499e7e7d238152cbbb536560. 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/CARE91600936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6d1f3fad9e55b5b224cc2652d8d97cc32add60cb00845d031db2a8dd1ca83a. 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/NLZ541800855.