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 0x3f543bc947b4878cbdbdf8ee7f353da44ecc6c80b76a8fc321a2395cde928eae. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c0025b8-7232-4350-b0ad-bda472468305.json and https://artists.proofprofile.net/proofs/artist/5c0025b8-7232-4350-b0ad-bda472468305.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 0xa81013c6d49a82f18c730db88bf76214162a6f4fa7b144b4dea4f56051b3de10. 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/TCADJ1754451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb6e47267dc5a249eb7869cdb8896447fdf805e0c113dfac0af74e984058a5d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IT3GN1900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae05c499f030c342597856760a639c257345082243755548bc5af35b5c0e8a67. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IT3GN1900131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85409c041800d87b030d76f53ebcee01987d261a632c32d85adb24562890e717. 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/IT3GN1900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e846f9ad9200d4a37282b26d3d5716e35c79f65843997544a9e5a6accde1955. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IT3GN2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7e0dc8366b7f87fea84f1af2db7ae59d809cf772d196a2c27319b779c164a1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:23Z), 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/IT3GN2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373076acfc9c62f1e3ce2b6b3ee2e0493a8b6c890fd53e356e8bbea2a2aea1d0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IT3GN2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9456f0435fd06fd2248022dda4eaa341c6ced58fb7e74884cc698f0c8ebda7b4. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/IT3GN2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d96ed9c108f92b56d8654bcf93b187065de757d3960576fec6f363c8daa13d5. 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/IT3GN2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bae7895069dc8a9a252d67de383ce750b3fac7ddfe5e81ad9b8866af5870b3b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/IT3GN2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8213e0b73440e4d13d68e16badabfbdbf190bbb741ebf7bb328f35e2796ce7e8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/IT3GN2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06749777085ebd67d185ded79ec709b92d287c0fff2443c6bd33015ae53857bd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITM382400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a12c5d429ab06cc0c7e3f93e7c4ff8a9c9b833fed60fdd1e024f8a519f30b3. 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/ITDF62177107.
Suono Roma Dimensione (feat. Tutti Fenomeni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52acee2fe4175dd4e6cbf208aabb94c358bc2727a92ee44f4c9a9482500391c0. 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/ITDF62177113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f5d172f1bedb0acc5051f3fe65a86770d474449aff8656e713b812d47ecf3f. 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/ITDF61877075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1c702441623662007f63148a93a1c8fc9cdf9b3aa5c83238e8e1b2465c5d01. 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/QZAPG1749341.