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 0x90281f46ff0ecfb7113711b6f93197cc1732aa64b4cf94726578f25c78cab2c5. 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/bfe84236-9738-409b-8a67-74e1d917d1fd.json and https://artists.proofprofile.net/proofs/artist/bfe84236-9738-409b-8a67-74e1d917d1fd.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 0xaf9655c45e5dff52f8b7d21dcd6feab3be3d72bade9805eedc787f8de1fed75d. 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/QMDA61584313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9a51730b5852d80ba38507ca1e95e326025d8250e958a32f1c9a1e8ecbb614. 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/QMDA61584316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15524541a2deb4475520c742c8e4e197b6832ba727e8343b6c17d6499c772556. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:18Z), 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/QMDA61584317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497c0e534ff8b042b89ff213f532292e6fe42de679ef60b13cc4edeeb6c9e5eb. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMDA61584318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae9d5441ac3bb22ad7cc1c328b6d9cf14f0d4b2e5403a5fd510bf545fc1d55e. 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/QMDA61584328.
Bandita Folklórica y Tropical de 25 de Diciembre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e0a9153500364e4aa5082cda0b8c7eb3f2b8cc37072637032e99613f9dabb3. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:30:44Z), 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/QM6N21463415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00026e28b538e2a8d5b4d4eedb58edb303bda48a5a08aa3bcc6feedf3ba935f2. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QMDA71537112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2997733a46ccdd14ec0e210bbd10c00cb670ba4466a50438d740e1020c75769b. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QMDA71537114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899dcac57cfab0a4bbd1a6ee22fa462d59f7c7e2419958057ae6194d21bfb341. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMDA71537033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035820fdeaf7f848f31b3df22028a3509c297b9f035e506300c59e368193d62c. 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/QMDA71537034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b7b8a962e30903f2207550810ae73ac0f4a6992dd0a5a7f22e58a783ec5f10. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:51:12Z), 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/QMDA71537035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d901531f8507456c43669cfd63d6f873bb3448fae85500987aa09239a4e3c50. 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/QMDA71537036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e58f02312197e34324cab15231e773e575ed9349d12771bede1cc3d3e5f7a20. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:55:53Z), 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/QMDA71537038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1305caa3aa3b63672ff4ef6ba19b0d459ba4a6d6bb4f1597ed2f1d4b6e79f84d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMDA71537041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffec07596ae1ddee1b19817c623d596d119f0c640c8f035f7c02eab7dfed6338. 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/QMDA71537043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe502e57fde7e71d6a7affbf86226b75f020278a314e179d2a92f4824ed033af8. 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/QMDA71529028.