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 0x4ea647caae3f26656288480c6bbeee52b6fff88a112822b63fcc80fb9cc461d9. 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/4f960c51-a71f-4e0c-b6b6-2a083597e82c.json and https://artists.proofprofile.net/proofs/artist/4f960c51-a71f-4e0c-b6b6-2a083597e82c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canticos De Sempre Benfica - V I (2ª Edição) [Os Maiores Êxitos Do Futebol Clube do Sport Lisboa e Benfica]
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 0x16e2252cb6e9a08e63fa9ecac659a1a44158b1534b4602ac173e9c4ac37355f6. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:16:52Z), 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/GBSMU1984319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a245a6dbde5e56daaeddcf46fa96b9e89825dcef962f5e3d5ed0d199f6a9bba. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBSMU1984320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04099e34f6149b5df3d4e2fd9db6563db21f1f9daebb6e66f79795a6ba34fad7. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBSMU1984324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517afab0b833324df7a5b5048964aa7f213aee1a6812d22966f3a2e6abef4171. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBSMU1984325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dbb141fdb49ba5e2004196109cec589cfe9578a1c61cc54281d57a9748304c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBSMU1984330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cd4ae51bf1bc8733f0fd82d54f4010e1897a353e3544d1cfb063bcc3b8905d. 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/GBSMU1984364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0578e5098e252c19199ee3381bd4d7960c7b5917f85b0945dd1d61e64b96ed83. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBSMU1984387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1196e834a85a7c7ba0d16fae9dd98ded34d3686612ff8274ca0352f9b607ec1a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBSMU1984388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1e06dfa2fa91bde833374149a2ac0eeeb20848a508bf5087dfb84af7cd2f0b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBSMU8270244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc35d7ec0b4a8a8f5e4472c7dfbe32f84a39e4f83ce8b3432ce9cc4be8882a68. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:46:21Z), 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/GBSMU8270253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934eff7cd27fd928fb0a7343d64fa1ed019eb4839c197fa357bb1ec4a1dfadd4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBSMU8270474.