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 0x2144783d1b7c15597afe864bf5849725aca8cb83d7aae390bb63201fca56c1f3. 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/45c7f3ea-74c0-4309-b0e3-307b45003a6b.json and https://artists.proofprofile.net/proofs/artist/45c7f3ea-74c0-4309-b0e3-307b45003a6b.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 0x8f9ccd9df0a5ac00806178f874c2c02287a45175f77c1209fae2bf24a8d9f54a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QMFME1396495.
Suoni della Natura: Cascata Rivitalizzante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f3748579f1fe3e524512da60cbdb01098b141e8c5fd6242b6cb277abb6c660. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:46:49Z), 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/GBJKT0600117.
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Suoni della natura per dormire: 240 minuti edizione speciale
Suoni della natura per dormire: tempesta con tuoni e fulmini - 90 minuti edizione speciale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987cf74316e8bd6f6651d150b12b71677994817558d8ce91248b4806813589ab. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USV291419128.
Suoni di guarigione dal Tibet: 90 minuti: suoni naturali
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edf68f1e0df8eada701ba6144e7e8cedaa1258109c0d373267520b1a4d8c10a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZTRX2275091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3345e2fed27a9f1a6471bf510e2771faacfb4a0688558b5933b54838804c5c0a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZTRX2275093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c57f60568c6505f472b3d1a4068a455051b29c28444f59f3639189ddc765ab1. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:28:25Z), 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/QZTRX2275094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdb3466c048d135b31242b86b0380ef278758f278f55f38076998d4321ab5a8. 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/QZTRX2275095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ebe042202cd34a576c326c5663398633ab2c8f2980a98069ced918568274d4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTRX2275096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84abf5bb5ec3778f72d3ddf6eefb2a495642e1401e6e8ab46d4129cb7d4c431. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTRX2275097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55d55def2b6408d13c564d536aebeef60a82d22643b145b5d7ac9b8fc299bde. 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/QZTRX2275098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f98c9a6b4a3648b0cd82b2166812e78d428d17eb93bea136ae3dc7026ed95d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:59:20Z), 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/QZTRX2275099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0109763c2222d514a3b99393dbfabada412854f10497fd1c835d10fe0b1e4f7. 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/QZTRX2275107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fe67bd6ff3c18648e94c8431745b7f1014dc73bca8b171d6720537604164e5. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZTRX2275112.
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