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 0x566fce8a7c841d9bf7fb119c1109e4136363339ebc4148068a5452ac540c0ad4. 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/2dc52a8f-4db4-48da-bd90-f9efbec78eca.json and https://artists.proofprofile.net/proofs/artist/2dc52a8f-4db4-48da-bd90-f9efbec78eca.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 0x2ccbd376a8f7cd67f1aedd5fde9670ecefed0c297ee337a02f41069e9fc669fb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:31:24Z), 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/QZ8LD1741536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae16d211577e540ea3865c45ff90c5d44e089c5f3c0eb095ac294cc97cb7f136. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZ8LD1741538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a403aa9b77eb7d1447442c2262a88c11b58785c1bcb244511c4e98828d61d7. 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/QZ8LD1741539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0e5cbfa7d52b72a029a5d274ec170e66158f40e09c11e070114500e1ab2c6c. 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/QZARB1803936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d4c72f10275bf37a2706d98873e2aca96582da28911258a1ecd2c92fb1d553. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZARB1803938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c9be290ceb71ce91ea0948b9f8e4d8cd61a43653b1236c9c7a44d11f634b77. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:11Z), 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/QZARB1803940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb314a6352e05784519c29e599bbe759345bc67439594aec52d66e8687eecd6d6. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/QZK6M2069606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641ebafb79624fad4ae1718027b06d06943510d2b78c459ce85daa07ba178ffd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:29:37Z), 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/QZK6F2067216.
En Vivo Festejando en el Taste El Fresno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e224599419b7f62cd9b8dd099e95feefeac49c33e35daba703b99aff45f727. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHN42136904.
En Vivo Desde Balleza Racetrack (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bc0e46b0417a52575b5a15c9448e5a63df82ae37de617e93f92bdaf10649b5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFZ72219211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe705ca045d38fb446ae541fbea7a1296aefbfef2d87f4f073dec61fa65095edd. 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/QZDA72206639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc589f44a791a467952132c5c66ab4151340103f0f1fff23cbc0df141a2718f38. 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/QZTB62202361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59380b77229f401a040c9e7102a6f236ddd90ba76f38e10f7148d35aeea868d8. 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/QT3EY2440032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc635d0f33c75506441f76e6f98d3886d727923b0f79b93724cf1e0774200bfcc. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/QZHNB2586293.