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 0xb02226cea1e67bdc8b3ff6c0db6d8f1fbd413544284a22e0de466cf2fff5a13e. 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/1bbf2c8a-3818-4697-9f18-96429fff9b64.json and https://artists.proofprofile.net/proofs/artist/1bbf2c8a-3818-4697-9f18-96429fff9b64.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 0x41ef61e7f36ee6c334ba032999012b98884b8a341172ba2b5b27e1ab4c40c7ed. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEE861902710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d65e4f06a6771b622d7f76e674b3d0d33e0c0136af959208594639a3d5f6ce4. 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/DEE861902712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5c81a0dc82ed1dd7158942d367257dd7c18c1cf58a9e7ab3be0c2f697ca483. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEE861902716.
Mussorgsky (Ballet of the Unhatched Chicks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8c3d0ee27e18cf3ca9d183d9f58cd725436cd21857d0f7819326df2f2a9127. 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/QZNWS2034880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc66189571d89f3f7b457b1f8ee3a2d04af7ab5eea9f478121603b7c3cbbc10. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN62131730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c734c9ee814f443c5360ea91f9387bbc6b1f29864696b16beb203ca6cd206e7. 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/DEE861803020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271ed3149ac9bb1b3fafd12710f39c048d0e431bbf2bad942811f6f7978e882f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEE861900387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd54836c6b45686b44994536a5ada618ad616fbdc77a41af83d0c05c472cf11. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEE861900390.
Musik zum Entspannen - Klassik zum Träumen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c734c9ee814f443c5360ea91f9387bbc6b1f29864696b16beb203ca6cd206e7. 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/DEE861803020.
Classical Piano - Peaceful music to fall asleep
Temps Calme : Musique douce pour enfants et bébés
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5beea7dc92891cf33f06ab2ee90ffecfa75f289b6124c9ec2a42102f3aef05. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEE861902717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740eafc60fa58a9f391790a3dc6be03530c317dbbb9b66cf71293360f59ffb40. 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/DEE861903689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8ebe645b47f519f426d9091dc26c83488edca97a32922de972a3df3a3bd18d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEE861903700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740eafc60fa58a9f391790a3dc6be03530c317dbbb9b66cf71293360f59ffb40. 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/DEE861903689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740eafc60fa58a9f391790a3dc6be03530c317dbbb9b66cf71293360f59ffb40. 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/DEE861903689.
Movie Soundtracks & Filmmusik - Best of Cinematic Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740eafc60fa58a9f391790a3dc6be03530c317dbbb9b66cf71293360f59ffb40. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEE861903689.
Instrumental Motivation Boost Soundtracks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740eafc60fa58a9f391790a3dc6be03530c317dbbb9b66cf71293360f59ffb40. 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/DEE861903689.