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 0x5fd62cc910334d366e3eb6215d1b41fbe538f5836c88211ff31dd4228bb89198. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d21ca4c-720d-4f43-8ee1-7ec7cfa8dcde.json and https://artists.proofprofile.net/proofs/artist/1d21ca4c-720d-4f43-8ee1-7ec7cfa8dcde.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soft And Calm Rain, Deep Relaxation Music
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 0xe689763f45e7e5273f7ccb353833cb34fa687f5293c4d68dd9e7d55ccd064ac2. 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/SE6RB2203257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526cc18dcbc141573ea96828e8cdd08cf60915aa9b69cf2994a5b6c431ecd6e1. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/SE6RB2203260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c18146751b956714bfd57344759e00f51847e9a62bece54fcdaf51ee6068368. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:10Z), 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/SE6RB2203262.
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 0x4c2472c5d56d3bc66c9498fdd678d9375be9c85e96c0d9738e9ba52677287f4c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SE6RB2203254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8c56b80a68cb08ed6bd8fa2ca0f9690a1c9f212bd82af9d01d6bc1f0fe5c86. 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/SE6RB2203256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedf4b0d0b29aca95006283d3ce81000b20772582f982d48466adc8f730d8619. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/SE6RB2203261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf2c62bfc6a61fa0fe126170f8195947e2ad4a03b649e1b8a7cc87708b88bea. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/SE6RB2203263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa629e9267b5bf9db8618dce30d49e7b7cb9ede614135f1e2e2b39e25d3f01b66. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE6ZX2137407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3153b699b200e5750bec15f18fda596f9af741248a4e00ed50e2ff2223f0c26d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/SE6ZX2137402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d23dc2a7fb755354f50624444399283375a6f9b241814b1759850c2661708bf. 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/SE6RB2107801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80979e4067dd458eb03e462ae40aa60050c38a5ed2f1d405bef1fca5111d032. 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/SE6RB2107802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e046b60628c50c573824b3a1b25fce31fe072b9c2ceac0ce1f04aed240240d6. 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/SE6RB2107803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f58fd8b6fff63b91ea2e131fd52ac1bb5d0242875c564716141fc3e336c3391. 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/SE6RB2107804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb006a83b4855bd5b9bc51efbdbd0ba65d0fe7965f4b8e2c0e917b1b3e45da5. 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/SE6RB2107805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176bb969a9a11420354bb333d77c1d627899d5c928cedaf5a73ead98ddd1268c. 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/SE6RB2107806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1aa021145d9b0af0ff899c8b07bc916c73305342729572c39e6aced5e1fc025. 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/SE6RB2107807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a56045e6dbc80b0af980921cee4717a8063495d16c48faa4ae930ec0703ad9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE6RB2107808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a465b1ca1bcf5e3354a026c96b63a4084f93c020694d507b8608673d04a5f5e. 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/SE6RB2175501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5291ab112c201cd81cd0067eb603169d50156a41bc7ccf4a35de8c2bef56d33. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE6RB2175503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561ff2a20e4302398333307111fc62a004dee18e925076f2b266c96ac0ca5643. 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/SE6RB2175506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8324c4791e93cbd986a85e951bf8446ac928b2203a7bd93f76d7ed753fe270e8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/SE6RB2175508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488862dabd2acdb7b87b33b3fdba8f5f9f4b11b9ba61fd60f3bd61065eda144e. 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/SE4RG2304907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25706134af9cb1e6916bb1fdc513703b9ed32a1544573571354eabc755f8cf4e. 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/SE4RG2304908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93651bfbeeec325eead4f67173ffa21b04b619f140319f75f6369e3f860b95e. 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/SE4RG2304909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e34d30799d99eb5fc4715cb7fcc3aa25f67c5d9c274224e5b1f8f3272c07f19. 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/SE4RG2302820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29fb3261b07d726575b7ba861bca84aeb5d4e7efd8780e65faff3191b22355a. 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/SE4RG2302821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1807db3ebe2fdcb368ef445def010e46d6a09c5bca15e08b3feda91cb2dcbbd4. 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/SE4RG2302822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e577ad738705835df02fbfa98406c09f7ac3583eb0b3dfbb10cca6df55310ec. 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/SE4RG2300939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63752c69ff5cee4f1e7d1d224248f4f355fc1447aaff976cca56a6e20a4ac353. 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/SE4RG2300938.