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 0x13a33aa002f303f3fc53ce16619d52947165b01240c7e8c66c6ebb59dba40d55. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fd86b4b-fc97-4b9f-a417-dc623aa4f278.json and https://artists.proofprofile.net/proofs/artist/7fd86b4b-fc97-4b9f-a417-dc623aa4f278.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 0xc4143cff2a3262937d9a32cbc0ab1ef340c64ee22de049a219d1623365620ae0. 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/ES8241009503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534bd36521df1eaff762583bdc7a94a04742fe66f6e0af070edc5e888e789be8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ES8241009511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0325cebdc039b6f8fdcf81983f9c4c6729132818b07ed2bcb949fb4d297b84c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:25:10Z), 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/ES8241246302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0335f2a12e8bf8b1164d371f33603495e21928e0e2d0c339a76b2e31668b8f. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/ES8241246303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf0efbbc55da273c18b99e117646c4b638c7543a8acecdccd9769d37b725485. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES8241246305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c203e9ca8ca04d5f2d6e446ed299ba5d7d548da513606e4391274e6e31d7974. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/ES8241246306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2ca302092a8eadf1ef400cff9e099f981fdac6ce661be3153e7d4086628964. 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/ES8241246307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968f384c19ab9de63c54ff5ecb314879e1e4fe36d3dc141717d666ae4d8e0e4c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES8241920803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac84809bc802f889e6b1ee61f58fd38267fd5d0c31a6c0f014570b1a9a10a283. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ES8241920805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeef58ff4ce317e85111895322d6e146d91597d469cb1ca7c820bad12e20c295. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES8241920806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b641cc6b6d5b08104779778703821c9e9c442fa193140b1a0896be3ef7422b3. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:54:41Z), 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/ES8241920808.
Mientras el Mundo Viene y Va (10 Años Y Una Pandemia)
Niebla y Hollín (10 Años Y Una Pandemia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ddbc8789f6c3359fbe139d72dcf5d16047a0a406cd4d5ae79f2af599c65f37. 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/ES8242136804.
Mientras el Mundo Viene y Va - 10 Años y una Pandemia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeba4a6f6047f09c7eecb718c8a68af5519347efb8be6fe58dbb3256149efa20. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ES8242136808.