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 0xc2afd59b747ce04f176ecf1fa2b6ad56f97f19f3eae9262e35c204d310d4d47f. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0006aeeb-213c-4776-97f7-257dbec24fd4.json and https://artists.proofprofile.net/proofs/artist/0006aeeb-213c-4776-97f7-257dbec24fd4.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 0xba31342e62051f1dee0dcff3b2d96638362bfb5de7b8aac331a6e9f9eac9a043. 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/QZGLM1990836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44af92d4885632214d1661a7432ebf2548af29475b3f2df8e2f48916c35b6f7. 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/QZGLM1990842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb4cbd2e39804f1f802c261a72aba9f4c4e854630b06a6ce3081d8e0f19fdb5. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZGLM1990835.
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 0xe4d4857b5badf0890523f040e3720bfcfca7bd1958699b496ee5557dd68acb87. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZGLM1990837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8befb8745167e5761bf0e6476bc30d0c789ec0647fff5ca95a0b669d4b826e01. 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/CUA022115230.
VanVanero Siempre Sere (Encuentro Y Partida)
Salsa 2015 - 20 Original Salsa Hits! (Salsa Romantica y para Bailar: Puertorriqueña, Cubana, Dominicana, Colombiana, Venezolana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0a2ee9751ef6840f83820b81d5655f1c13b7788810ffcba0f52e57382872bb. 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/ITF251400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87d2e4d5e89ac847ac417b3da94f3877ffed6ba8ba9a66f6b433a344c96eed3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAFQ2113960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e2d2cec78fab32c8a07b463df5ed1a7e88197ddb23e957cf30723f24c5198d. 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/QZNJY2404462.
Son para un Sonero: El Concierto (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a421d41d17521ad872ca95c2f02aedb207a9228ff2c8a295a66e2d607d5bed. 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/CUA022014172.
Latino 59 presenta: Bailando (Salsa Bachata Merengue Urbano Reggaeton Dembow Fitness)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0a2ee9751ef6840f83820b81d5655f1c13b7788810ffcba0f52e57382872bb. 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/ITF251400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bc3c967f73c1fb29120c4cf39ff64947595113fd47775997a58badc8b67e8f. 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/ITX302200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275c198e1573f7a31153e895149e0bee924e969879a380ed3b887171790acc89. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/CUA011906301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f0ced5adc1c17439766ba142d48a94314778cd3e241e325421738e2177e18d. 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/QMBZ92096451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87b9c39971146b5b559d443e3f146eedb9b1a833780046fba3ee4380c65d8f2. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/ITAC21800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f38de90fdc6585737b8936d292ff3fc67ecf0c00aa37f8e4ab4dce11ed6b9e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CUA021410770.
Pu Pú Chán Chán, Ahí Viene el Tren - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d0861101edb4b5c127e29005b75d7978f02645f3fbe5d09d2018447382e73b. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/CUA021712217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f9342b2771bf9a353a49f96cda8ee8b1c1d073a5946fb9e648aa472738753c. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USHM22127324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc928adb2d5b9b22f14ace3233f3838f3af04022a45cdbed5127412c83ae9c774. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CUA011906307.