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 0x99d8068e308cdf166181fc86629e74547ef71957182dc47fe2a69fb7a3972e65. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6165c9f4-08f4-4766-8e01-b47701d019d0.json and https://artists.proofprofile.net/proofs/artist/6165c9f4-08f4-4766-8e01-b47701d019d0.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 0x7f2844fcf7b4ac4f7ef1d50393baa6049d8e8c607c379643363408d3ad9981ee. 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/ITP842300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283dc3c35a8aa35a3305c360724e8484dac749cc4a18f1bafed6bb6c81628199. 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/ITP842300166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2994b9b7c4dd0c5ef252c6e6b661078a1a10a36693931c410080eba22ad8d0. 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/ITP842300168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06aff5884a1df5f7f359ac3421db93f977e8e537dd9cf91eb706858d4bc5bed3. 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/ITP842300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b33105e4477efa2e5f75eaced172900cecf0d7f46ab83fc4b24bb1cc8a1caf. 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/ITOOJ1800267.
A volte le cose vanno in una direzione opposta a quella che pensavi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d5420e0b7bab4ab1f55fd8fe857200eb4c7e75f2cc54e60c1ad25004d2ca18. 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/ITP841700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20981498a4678d76f07fecdc2598e65144cbdd0c679dd24617f67a5a598f228e. 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/ITP841700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9b03bba6af3cd603c6ec721d1c1ab43bfe2a01588cbd4cbedce070cdcd4bb2. 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/ITP841500000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb103235a9aa02ef277345459b0836dbaff1f0a8998f5e5330a97c07f1f5e221. 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/ITP841200092.
L'Italia Cantata dai Cantautori (Songwriters Collection 80s, 90s and 2000s)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1e9ba89e2f964a3953542b22c21823b464cae25be1c4ea58cef3149c210882. 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/FR6V81481290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd709254f488af6b1937f19a7603fd8d8598cccb405fe4ce0dc730e7e56652194. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ITQRS2031702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0677bf4aed4eab7435a0c41b11cc86e9391056d5a57d7ed2c1cc356a4855b43e. 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/ITZ682451303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a13eda37356754c24c64bd533ad419387952e0b1835e76fc5e4c13114736c8. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ITP841700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a413cfd21c52d00c6c93ab8bd8f1a1ff25976b8637096b7c58b3d2095ecdd33. 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/ITP841700009.
Rock Italiano 2012 (30 Imperdibili Tracce Alternative Rock)