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 0xc9475b650bc0a57db69ffde7c0e22915535281e2bc8c89e54ae63528532c0ff9. 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/189999dc-984f-4b23-8a4f-a9108e33b666.json and https://artists.proofprofile.net/proofs/artist/189999dc-984f-4b23-8a4f-a9108e33b666.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 0xf35345c6fa36dfcb8a8bc57c823531d216905cbca4d96d7707cbda70e1612be4. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZQAY2404755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9402839a8e74f4cae597be79a8f2758dae550941e16f08e94f7c8914e656ef. 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/DGA0R2307376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae503bf6df9007ef93c26697e1ee3fbb24cd1a6f17c03ce1f797eb5257cccb80. 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/DGA0M2327185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a15d5b51db5fbfab059fcc85921d41f6485502796143597c57e915d5b136c2. 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/QZNJX2347728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76ec5e94ac497d1afea2161ed5b5effc92e3cc8bf50f32d012038e8e3f3edcb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5AB2307819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf874499123efa406a458199c503b9a0a7358649c22da8c302a283f78d9635603. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG2359696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0ebebbc1814deeac8ffb7f0bc0b336ce43ed171525751d885722d2cf15a3c1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJY2292617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf233d9c5533e4dedd90566ae48df9f755c32a19bbeef370a4a69a9c879d7ae9. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZ5AB2227206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800fad3673a2fdfec287a316e821e2d63a4af1bdb2085a11af9b61fc85ef560e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNJY2107502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975b6f79f64d23404213d92d48a23cf3ca8e5b2a8f432ac662a46b07b059186e. 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/QZHZ32108463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98c04288a9583815e5800484b405bce8b4ae87be38cfdef7bbd511be06b353e. 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/QZFYY2173547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75eb43ce7d63b7c338c79116e270abd9aec719e1b3152e81a2a5a8763602dd4. 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/QZHN61903774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e21287567ec5f8117a36dfdba8add94ddbb26e74aab4ecce9672992f0bff15b. 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/QZES71803045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf368c7431188aa4f020c2044045d5c3a5ff81e65f8e38449b12adcb93314815. 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/QZES51854902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8af13813e38cf1d7cf6743735e17b73f9da579b32d11641c8ae3303b892b7f1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM2PV1899636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a628511f31370b3a0fdb978164adc1083e3313756471eec6850edb6eb3807cf. 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/QZHN41950800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf244a9589120280aa4ef34740c52ffe65a6a62baae16466f4982a25b3647ed2c. 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/QZNJZ2429287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190c82f756d45b64dd514a23f095cae64d81b99a89d03107a94671a1c952145. 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/SGW502316277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c749f63288b011db93cd34c5c84b2b10a3721e4b00bb09f4ae6d7f6ad72f815. 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/SGW502316276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0997f91efa474e0b11f5937f8c616bdf0f79e5ce9557f946f99f2aad33a0f01a. 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/QZW9N2241601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c70466335e7e40b5e8900338a99cc786ce2e73fb6e02aaf8a89015b1aed9e9. 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/SGW502316278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294ad36ac39a13c961a041c7ce24b6792db1e4cce0353887b280d937dd800a94. 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/QZ5AB2369348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6566c467797ca879407dfeeb3e4bed63f70d0811a37686b52d474aee618ebf7c. 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/SGW502316279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103de21bfc474bf742eee7dbb1e6607a00fca79ab605314bce99d983b2668a2a. 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/SGB502375225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6eb2b537ca7c4a68ade5a3070df8a42885e02283ec9e3661b46ddf03331ae4. 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/SGW502316280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb634f62c587fdd9707104ab601366a59ad8b7ab1951e45a3b3b7dcd0aa5d924f. 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/AEA3A2399805.