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 0x95c952e515f129a98feb619371b28bf01efde7fe0117bbeb3bc0bd7241faec46. 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/eafb21d6-e57b-49b2-a7aa-a2e7f0194500.json and https://artists.proofprofile.net/proofs/artist/eafb21d6-e57b-49b2-a7aa-a2e7f0194500.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 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 0x4d7abe9147817734e20a76a5c82e09053c3b2752f19cd28a69bee58f987dd817. 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/BR5ME2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3519b92bb8c2f5104b29bf2a156d6759ec041c60cd94eed8f6e3b154e27a2870. 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/BR5ME2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134742bf3977ae3296de5c0cec97cbb1084642e109478c071d5920f61d8af66a. 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/BR5ME2100005.
Pisces (Feel the Music) - Tommy’s Reload Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b89eb9df09ebb2e31fcd5fd6f50b35f4bb3bde543f880ec398f19536556182. 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/BR5ME2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5f19bdeb1c34ce0727d2610890c89eb33708d3afe30e5f515fd8141bd00d69. 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/BR5ME2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4b64e866497197ef4b72da84df7ab9fe909b0bca39232c95cb3fec89c0e997. 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/BXTJO1800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccbdf834e18fe003c59777d616ed1eb47c002d09db193ba6957473f025fae96. 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/BXTJO1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce49ec5900cf8eafb0016fb00407b71d5796d745b32245b455da690b1834112. 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/BXTJO1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ff65d69d262b0767186257ef964fcf40f1ba67c2d45b7fadfec20b474d6d1b. 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/BR5BG2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e40dcee842943fd57736b8bc6a29d81b9eb663a52b6e6e69e673bae374a606. 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/QZHZ51957891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d87999cf3c21db1165fc193b17d3db2d08c8b23bde13da7f4e3b95ada01637a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BR5BG1900014.
Do It (Rafael Starcevic & Liu Rosa Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5bc2c7fd9296ac996c5db1e4921441798fb5cd5a15162324d176b220f676c2. 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/BXTJO1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517b82d7781ecd82f34a6f5a1a286486a8ad7e5ea697a2e2637d5613e603522c. 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/BRY8S1400059.
Cha Cha Boom (feat. Nikki Valentine) - Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af014889b2202946e05924f35b3d4e95d988cb32b0aab37a35292eefdeb13ab. 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/BRY8S1400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e79f053527ac8377edbe3c518002ec5afa6952eaaa7f2dc4cb1316d4f8aba05. 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/BXTJO1800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200d829e9de4361e82913456b7d58d0fd9d5ea255f30791f66da97d7c269c2e0. 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/BXTJO1800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a0943eceedcd660800ff036790a915ab33de58b51dc5ef5c7ca36c622e9c36. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXTJO1800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048caf8dc6711bb6dedc977b76179fe5c0ae69b0afd01502e543e22dd9dea885. 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/BR5BG2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24a63e4452fbc498f8d26522a1778c619aa1cebcd4aea7511064193664be3a3. 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/QZNJY2437585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f223b8acad6922d28ff463b7f8bdc8b6c52ab137cce238229e38cd7dbcad9d. 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/QZGLM2438978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a4ef2bf8df41425859177b5205fc0c3ada4be417b04043e1b3c85d2f297712. 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/DGA062296469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcf90a8c9b59ac4282824340f3507428b3e3a0992e92f21d24634ec5143e642. 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/BR5BG2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590a2a7d5416f3b79b46fd8e68f24804b109174e54ac42042081d6368afaea3b. 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/QZHZ52285834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7896ad9f7ac92cf0eff67ee10fb936a49985735bd1e9177d4eef19c6510fbe22. 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/BR5BG2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e316a0bddbf4314692ddcebff5fcfa1affc63a7abfcf969f8e111a3f00ee93. 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/USA2P2134743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a1ce432477039fe41231038123ced027fcd2fb11b3808dfb40ab35a83560bb. 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/BR5BG2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d23b5166da5643aa792f5ec70d3a548f19aaf977627c44922d24cbe4f771fbe. 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/BXTJO1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b99e99cb01851cd92dfb98e5a69416f46a82df929d9b5d93a8e109b22728cb. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/BXTJO1800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fd541bd000327488e4ff3256307041f2b30d9a18c85d4c4f0b317d9856b959. 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/BR5BG1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af5cacaed16fceee40cae3df7b661cb4bb21320c6bcc217cecad4d7fd567cb7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US7VG1601130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811d795eb9b45469c34942b7c1707fcae423d7e0827996c2a210bb7ac44cfcd3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US7VG1581038.
Guareber Recordings Radio Hits Compilation, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf4de4101aabb98384c7438e60d364f8de8663012b3c99abef44cd4905225dd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKQU1968049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa8a95a5d7428b62b8748921c3f889eff2a9213ee8fdc271d110cc304a0e969. 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/BXEPJ1900102.