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 0x9a92569380cdf9ac24ca8f80e79c63ac50c029671edfbce77378937178900057. 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/871ecaaf-a0fd-4a79-b1aa-627704c11bfc.json and https://artists.proofprofile.net/proofs/artist/871ecaaf-a0fd-4a79-b1aa-627704c11bfc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Quase Cinema (Trilha Sonora Original do Filme)
Papai é Pop (Trilha Sonora Original do Filme)
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 0x99bb0d4bcc18c329f7e3662398ea8716b6eb7fba24c13cad1497ff7f2c98e6f0. 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/BXHDW2100053.
Divaldo, o Mensageiro da Paz (Trilha Sonora Original do Filme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc799cf2a1b877cb9d280308a41c2d2f996c819a559ed98019048efe8e01cbf. 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/BXHDW1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19929fcd90484eb3934063550c76b22219dd7a6193e30703377cf3cf0f9e354. 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/BXHDW1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9deea2ada4da22401f78ef3d27cfa2a396e9fa03049a1605701c73e55d77bec. 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/BXHDW1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd858679052c1271310dd9a8c2b27e49f8986196ba4b214e88c46c0aaa5d2da2d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BXHDW1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26491900a1341b6a85a12255505ab85f78bf2105d78751715b2abf45d6a782d9. 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/BXHDW1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61077b93e2a793a4581950b7cc81002b7cdcea163d83448aa055bcf46593fc6e. 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/BXHDW1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5806a2a427ac79d7f13190d2f423f8a6df70a8b3185ba3b19c60bd24bf5684. 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/BXHDW1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00abe5e4ab3711d1426cbb39acbad61e37b6cc7ad6cc2773654110e7e32899f9. 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/BXHDW1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59ab172f0de423bb1991c15bbbacb7e2b53da3ebc7a9ad3615c1c69e19675ee. 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/BXHDW1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7cbd3c43046576f7ddb67cf2b33575552888b0c7327966085139cce2b05937. 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/BXHDW1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a93f1dd59e2d64ba822d0717c0563250ffa47fa98dc426492f9e56808b008a5. 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/BXHDW1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ebefbf964e673162d7d892f6e291c07c2edeea5497c8de30613b5092bc7abd. 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/BXHDW1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6f43159637dfa7453f410c9784e1784ed88870927934f50ebdd96f9e2ad3ab. 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/BXHDW1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094644b88de8e58809fe076406fed3d9f1338e53f342e42abc3482930ad81a94. 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/BXHDW1900016.
Ninguém Ama Ninguém...Por Mais de Dois Anos (Trilha Sonora Original do Filme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c8f1ba81d08fb863813fc3e61e67e7a17b798622955a8c2fbdd88bf76e0238. 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/BXHDW2500001.