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 0xb4b2708158696eaf99103bcfd59b7f8bdfa8a7a88d1fbdaa18e061321ed8c49a. 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/31171580-0745-4827-b417-70bfece33218.json and https://artists.proofprofile.net/proofs/artist/31171580-0745-4827-b417-70bfece33218.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Baby Tu Lo Sabes (Remix) [feat. Marvin El Protagonista]
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 0xf67e7e36be57e229637ea7a986d3d8e363242c1f37050daee15d912321e0aa36. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/TCADT1845887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080c4eb85c9af265eae753e24970ffefcff0ec454d68ff6fde826157feb76ed4. 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/QZHNC1970469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa687993672cb775449d21e3609b56aab4ae0c749526b3c537fe0ea54a16a4142. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGH1984115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460b0089f51d21ebe94515b3e0fe542e11dfbf5dc5450132ad06476024339d3d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/SE6QE2067546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1ab2efe90b5e0b82a3157a7752c6a41f65f5251d0401898d726702a0d1ba9b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/PEBQ91722036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4092b6c50513b3c052224f089b35e255a29d674d00165023b72efb9e84cddd8. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZNJW2221836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c6d49b98b7dad92a5d029026583634ea232fa7b2c0d6bb87785f5bdccc0862. 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/QZW9L2212287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69119958512bf732ec4a3a3cfa153b569ee540946c88307308215ef25688f684. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/US7VG2444545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b0457220764b3608c53e3ea0a04497746c4962082fe73cb008d92cd55525dc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZNJZ2500778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59b5f9734856edc34fe07b7fd15e34e38858c2b18bb31e849245975255e483a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US7VG2125080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59b5f9734856edc34fe07b7fd15e34e38858c2b18bb31e849245975255e483a. 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/US7VG2125080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee39a765cd8dcd924db6e3a9461d5bfcba3933331b323c92c263392e4af72e9. 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/QZHZ31978370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f0441971c9dc72bbf2765b4977274f1c8ffd23a2b2061329fac461df850dd5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM82066903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1509dae389f9cd2eb5c9e905b7e8db911066364db1559616f3310ac8a33ce2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZMER2183183.