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 0xad19ffd887a49c0717bb698b891c0b9a7a9d0f946a82c1531822b53f77eb558d. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa148f8b-31f9-4bcc-ada3-2391aed79f64.json and https://artists.proofprofile.net/proofs/artist/fa148f8b-31f9-4bcc-ada3-2391aed79f64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gustos y Zapateados, Vol. 2 (De Guerrero y Michoacán) [Con las Mejores Bandas]
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 0xe3515a38352d749f3ddad78b18f4c21bf389fe70f9e631038bb54dee4e89cd95. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX201616780.
Banda los Costeños de Zirándaro Guerrero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538f5aa123ee845adb201592e62055a68e7544a12ce7163859e09ec8ce2a9803. 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/FRX201616785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4579ab88f1c1989bf9f4886c1c247e0447b0a2b8d1897a29c92a6c8bfd880f6c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX201616786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fed67e5fb10e4518b9db9e185920ed78b0c075013816104b95defb6f0adbe3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX201616787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ba5e9f6b1117b647a545ed31161f83a6cef7b67a33888baba90d63d34f73cc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX201616791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c43dba7d2f0e4ae0fd7a49d315d22b1df0f150dfbbd45eccd703fae9155220. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX201616792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edd53215c31d9cfc8ae7a140faab438f7b7b7c80a0b4811754d7fd915c88e5f. 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/FRX201616794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b1dbaa3d7b495669c9089541048182db727e24bc364a6b7cd8014e0bb0f054. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FRX201616781.
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 0xefc31bf3db6e8b33cac090d427d6cde573c82925e4e8b4d5b43e06f909e72eae. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR2X41670237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17814c06ef55c007e614e61d03180d1d574856b2be7796b4334cca192c7d8692. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/FR2X41670230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeac713fe01486c279a0ca3e38b5c3134395b295da241c1558709bb699de7b8. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR2X41670231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ebbda8a81d4a3ac5816e299858877eebfb1efa6e6e74c026f69a7a32f1f1f6. 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/FR6V82607985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18dee484a0e8fc904809e8203b59c0868c7ea28100493fbf1669f67912571df. 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/FR6V82607987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4150f3b8f4f0abaf7db767b52fc5e461b48f0c28dd712f6851eed0eae3509f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:37:11Z), 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/FR6V82607993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f779286f0f912c236f8c37a5c7de75ac4b074d4eb9c1ead5a88e33917214620. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FR6V82607991.
Toros, Toros en Tierra Caliente (14 Exitos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb47fef469d9ebf081416d15032410d64096b43327cc9177cd78a06d8fe41505. 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/FR59R1655365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa036c37b0d65d2e8320bae65823e1074255381a61d7acf2247cb77a0dcd1804. 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/FR59R1655378.