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 0x038308f984cbd4a0456d5cdad8fc11b29acae238678c79a77d8f73ad8a72fb61. 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/8de50a0d-159e-4e2b-b0b3-df5e75c5e01e.json and https://artists.proofprofile.net/proofs/artist/8de50a0d-159e-4e2b-b0b3-df5e75c5e01e.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 0xe45b5b6b7ffbe076a3a565f1d7acb48689a046fca42aaed8464a92e26769162f. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZHN82118966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ed13414452a05a103c4d78c295031976f612c4c2d5eb27895dd9efe565510b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZK6P2115812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a28c966c26446e5ca7123740311f1a0ebe408e4e219cba552e979d668b98a8. 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/US38Y2503005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e60a8b1d10ddaad5ba40a33862ba778961277edea8697e1f4584c65b460c68a. 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/US38Y2520731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6429fb04e237158c0caedc4c4bc26bb45200232835ce212f1b00a7d30eaf0a44. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/US38Y2520732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a28c966c26446e5ca7123740311f1a0ebe408e4e219cba552e979d668b98a8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US38Y2503005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd612845b5a3f5172fa865a6be525aa025a90b61e8b29385eed422caa361538aa. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US38Y2510764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417223cf0735ebf4eb8492b5af4e856832e1a97352426545cbbbb924674edcfb. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US38Y2520734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff7da470fcae485cc3ba4219fcab7620104f2e60bb599da2f577864f494ac10. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US38Y2520736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09eb4c5d8864a1e55058e7bb70c85cd2ec864a30202f51327074b132a6f9e904. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/US38Y2546598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463c00d14614667a34b1eceba4cc99fe7a806b8addc6c4fd18baf792326026d8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US38Y2559863.
Nuova Sardegna (feat. Luchetto, PRACI, Rico.Pmf, Low-Red, Sgribaz, Cage.488, Razer.Rah, Enomoney, ilovethisbeat & Prisoner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3639a7afdb205a94873d89c9f1aca70a9b3e2186fb2e1d75d4caeb48a0a84422. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72300904.
Pretty Girls Love Sardinia (feat. Razer.Rah, Sgribaz, Low-Red, Rico Pmf, Enomoney & ilovethisbeat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e13bcf9095dd058b1a5741dc17282ce60edd2c87e3a9072b56acb33f63bc4b3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITUM72300846.
By My Side (feat. Cage.488, Sgribaz, Rico Pmf, Razer.Rah ilovethisbeat & Enomoney)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211e6c6b19c9959da8bf61d5bb7eab6503ba79ec2760b2c00e4262ae3111aeeb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITUM72300900.
Blessed (feat. Cage.488, Sgribaz, Rico Pmf, Enomoney & Prisoner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914af7608b97f8de88b0373113cb2a6735e4c273b2f6d6e85c7fe4123ada4554. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITUM72300898.
Business Lunch (feat. Luchetto, Low-Red, Rico Pmf, Cage.488, ilovethisbeat & Prisoner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05e109fdbffb91e6691fb7b8ee303f9a4f518fcf2a3136db61419ebfbc85b03. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITUM72300899.
Super (feat. Razer.Rah, Rico Pmf, Prisoner & ilovethisbeat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c04b2a16004a2b74e47ee5f2404cb90d91ddff422461772447ebf54f5e1221. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITUM72300907.
4 The Island (feat. Razer.Rah, Low-Red, Rico Pmf, ilovethisbeat & Prisoner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a687df899745206b579f3762adf8cfc74fefdea0a3fdc4f705ade13cc37ea85. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITUM72300897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e0895d2f808e46452fa5fd8669f11734c7c302dde26eef9792be6f349be896. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R2166491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedc64830d1feb92bdcb8c37ef7b1d576a3687ac5faccbc0b4e047962a4f08af. 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/FRX762158685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4765de851fc5b43fa2e927b1d7f35f54fe2542f3e43c1af3ea2826300b3337ff. 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/ITIWE2101084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c70e650284f9b08758437d1032c86e7f9b581fd1b2b07ca5be35c486f0ebf10. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFU2187537.