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 0xa725b1b4d2409c6f873d35adc50b86161b856de4d17c0f507b1ac4029fa52999. 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/cb8eabac-1947-4a12-9340-7b3ee0372fde.json and https://artists.proofprofile.net/proofs/artist/cb8eabac-1947-4a12-9340-7b3ee0372fde.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 0xe96789f59b454b2cc5cce39faaec7f65e37438fcac86287454aa198744180b03. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITH670500526.
Snow Cloud, Over Lochan - Remastered 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5eef6d08f8e6c946890bd710a25c1d6655c9d05cdc6d639b966755c8aa8989. 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/ITH670500528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba02a12422f734b4caf591c5e7d142f4c812b4b62d04e1e518c6dfc59b4d195. 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/ITH670500531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d17f6745aaaf7aef4dc14f1734ac5d6468cfda0fcab63790ccef48e724b9d0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITH670500532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6858c5c041bf687784db33cd4f43b9675fa7b0b6f02861c297d2b9b715e7e3f3. 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/ITH670500535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce4e1453abcc3dd268bfa84504ec483e6f3e62e1942f0a3f713d42b8828c3f4. 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/ITH670500537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72628e8f70e5a42b4b154dccfffb945afc6fe98a9449201b505daad698f1ec5. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/ITH670500525.
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
Comptine d'un autre été, l'après-midi - Remastered 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefff390038fb2e5aed09598e51b768ae58e0630d1c339e8bb1c243a324ce0f8. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITH670500529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5475ce22d65975313ebbb445c5a04c0b2c4da34b7372494a1d967c951c3551bd. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/ITH670500534.
Piano Chillout: 22 Relaxing Classical Themes (Remastered 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a7c402bbd775574449ff5c9be38e54a863ad8cf34aa679869b7e0b216aad3e. 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/ITH670500307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815fa0305c1259ae5b6a8480bdc7535eb334a854c2d51407e0841b937c5370d2. 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/ITH670500312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d02ebe28cfb8fac31088145f5551c435b255faec42a9145032c1c31676c644. 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/ITH670500314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd423f9dafa6d8ea14e5a158ec5492d21d8b6403b0f0c94f3124cf44d12beb65c. 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/ITH670500317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b18dc411a81cfa218b1a8b6b714d4a21d48eca3c2bc721b58b35a715450eca. 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/ITH670500320.