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 0xa1461f51b086493a730e15a480ce7dccf000e91cd5b2efc37f3be2f5e972fc17. 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/08f4ba53-2920-415d-ab4f-f2dea75c5da4.json and https://artists.proofprofile.net/proofs/artist/08f4ba53-2920-415d-ab4f-f2dea75c5da4.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 0x4799199588704183e61167e58fcf38f659cdc3e254285e64f4e1d6c4419b3b81. Chain 2 (Bitcoin): anchored in block 957838 (2026-07-13T10:04:52Z), 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/DEBL61056338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620fc1c7175de9b450b224820c38b0358d4c356676a5ffac8ef5ecae7538e030. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA560651998.
Tanghi e valzer, vol. 2 (Ballabili da gara)
Ballando i successi"La Mazurka della nonna"
Valzer, Tanghi, Fox Trot, One Step… Vol.9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a764389e2e2bde07c785acb4ec24efc5757ccf77b7d3b4ebe271fab30171fa7. 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/FR6V81374962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d29f74dec58ee03a2307a59826e75ee90151884a5826e41f92b20f1c4e9f1e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR6V81374970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39c2267a27eb6c86ebb88b1af0cb8dd236a1f31f7e1287b329a6682ca548ff8. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FR6V81374971.
Scuola di ballo liscio, vol. 1 (Dance Dance Dance)
Mario Battaini - Canzoni di altri tempi - Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8ce98780fcc5a4b8e726874bd79da986bc5402e125844d476f605ac427ee35. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/FR10S1470772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cf81e7e6b5267321e6e2a4ac5d541fdae917a2253b8509caff7758745a549d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/FR10S1470775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846713f98ab3ac98c331ddc08d38dce7c176c3a438c34b532efc23ad49e05acd. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR10S1470776.
Grandes Valses Interpretados Por Mario Battaini
Recordando a Battaini Y SU ACORDEÓN DE ORO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9778acf6479fd3684426ae81cbed681cf2e8b478210dce103db8f22b3caf9556. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/MXD941812626.
Java Piemontese / Saluti e Baci! (Remastered)