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 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 0xa2f6638d0d1774cc0d01a8041175cc22a156896d8523571f398b95bf3bbf3e65. 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/8978d4ac-462b-4efb-a3df-9b7eacce5b04.json and https://artists.proofprofile.net/proofs/artist/8978d4ac-462b-4efb-a3df-9b7eacce5b04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vintage México No. 148 - EP: Historia De Un Amor
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 0xbd62dbd4cf8dcb2bb730c3c399fb72b66426fcacd143f035d6b25a2df810a11e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MXF366914436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ac8bc595ed0957b2b16988f2a921a5f17c0d42e8d5cd69f87fc09e3849095a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/MXF019200374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf565fd0e37a656c54fe894844b1f3b8b302e85261152ba8676e976853e5a81e4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/MXF019501572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6de729671874fdae2502d833a2a8b423f97e7f97917c7c51d48d8e51f1a3d7. 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/MXF019200384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9e6b24f3ce69599479577cc0db5c3b0b2b66f31948ab9704035b50a9050ceb. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/MXF019900406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970e18c74e75a5b6c929915e0bf0dbe9091501ad50e4aefe3f5bdb994b31fd26. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/MXF016200461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a360bb29dd1f95a4b8ef32d9688421994038d370346a672536a703a50b4fff. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/MXF019501566.
Peerless 80 Aniversario - 24 Inolvidables
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fcc39cffaeb04aeddaf29b5be5837c607ddbce0594b4448b12a1aadda5031e. 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/MXF160201449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a125f037d0fdc760ef9d047ac538b4bba957b6e9364be9d0fd1b19f2dbec7d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MXF160300754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18e7f09dfa78ae49a3dac0ff46195d851fc974b51f80ee5a02fab4b51f10c16. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/MXF160204647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efe8f648b5a6fc84c7e60175566b77e70a4afebbb11df93f0583f1b60c9ac2e. 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/MXF160204667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831858889f0b20d182043dca90622088a445749a35ee3c87d7cbcbb68fe0e503. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/MXF160800375.
15 Boleros de Hoy y Siempre Con las Hermanas Hernández (Versiones Originales)
Tesoros de Colección - Las Estrellas de la Hora Azul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6605220d008e48a5f44d46e0eb02669e1c38e0cd81e2912f1b4163a94a2a69b. 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/MXF019200377.
RCA 100 Anos De Musica - Segunda Parte ( La Inolvidable Y Añorada Trova Yucateca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aba187f52bd83d844b741b61adf6152630497aa512b3f41fe37d7f1729c45e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/MXF019700276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5acae657510cf47c5b6fa44d07163a76b5982abc12576180c75189d230adf1a. 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/MX2620282647.