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 0x8b36c651a2ae45ad5c297ca579d657ab9ff3b06bba3ec09e63d187687cda2866. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d0b1501-61ef-47ab-8c16-13ae4b554cf5.json and https://artists.proofprofile.net/proofs/artist/9d0b1501-61ef-47ab-8c16-13ae4b554cf5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I 100 balli di gruppo più belli di sempre
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 0xe30eeef6f5b05c36c01b7a6a9603450b0d64d22936c2866948b2648cba92af5a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITS040500073.
I Posteggiatori cantano e suonano Napoli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa559c4c4056f042f5402a1f24982ed9304715d3ef9ef9036ee13946882337c84. 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/ITS040900683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20948c15876636a6e130434d03c266d0b867ef9c97a940e7a8b25b78bcffe0f8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITS040900685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627bcdee6edf23c65bd1e4d2825ebe488c7d81b940c0d81f62ee333114bb2fd0. 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/ITS040900686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7962a67e055411a6a5d1cfbaa48204f8ae66261e8a3ef553a2c1fada1c899e06. 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/ITS040900691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0233a1802bdd8428d1748129c686fc3ffae50b1e7fd2cc4f452dc7e171b79d5d. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/ITS040900690.
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 0x583aaa9142a344d9386cedd2c57c302187b84dcef548ee9170bab0d4d9c54e02. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ITS040900678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7199cc904dcabad26f72ef7957e5c2a1779529523640db71a03044b08b752fe0. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ITS040900681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d1c8744c14674befe4a05886115d418f44f13ee15ccd2e8a52a849f791cd24. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CALVP1918615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660b62443f092e6e4e520a07b7c9ce809ef248aeb2034828e0e2c1965cbed261. 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/CALVP1914919.
Le indimenticabili, vol. 1 (Best Neapolitan Classical Songs Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453a93d834b75833f77294563f9996810909020bfeacb071f2458bd045a5c2dd. 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/FR6V81104269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffb9a86a192a92ce167ced6fb53bb03c79115aa83a75735e74092e2ea846216. 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/FR6V81104272.
Napoli Classic Collection (Torna a Surriento)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50118e7c110ae129028024af383b6a25c59db2479ff85f96be508ea65d41632d. 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/FRX991501441.
Antologia della canzone napoletana, Vol. 9 (The Best Collection of Classic Neapolitan Songs)