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 0x66f1e497ac96d56b015db2a5ae943ec75ed234702e29418af71e7e3e699e11f9. 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/68f502c0-d179-43ee-bc7b-d2b871c287fe.json and https://artists.proofprofile.net/proofs/artist/68f502c0-d179-43ee-bc7b-d2b871c287fe.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 0xc9ab4433cc5f0eac0ed02ee45c3c3bf71d64f699c3de3d0b327160372c948b7f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFM2365793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca051267721dd4a9c56fa070a12e53b32ab81494341f2ba73acc90024bd3a4d8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZWFM2365797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdbf65a76fec17fe4c46be4daa02391f9ebcc1a66ce6c6a297ca05c58170900. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZWFM2363534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc096652a95b4e0193e686e9ed92fa84aed59be245de3d3824f4b84417b85d56c. 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/QZWFM2363536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43be43e41271edcccdc5ecde9921718688fd94d48beb105192df465be7ac46ee. 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/QZWFM2363537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f10a9c04f09139d54261d337400d55ddd767bcc287c7ebbf4fa6d4dddff7bc2. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFM2363541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa89c57ee329d6f633fcd52805eff671dc5c4cdc47a42a0b4f05967f3595a66a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFM2336834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe550d8bae48d7682f903e359c49bf1ea086ffc86a64cca5f9a8a8823fcc58ecd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFM2336835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182624bb551499502356b1f540d96d91fddb80dcfb25ba6244dc4fd844707871. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFM2336836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e15161e135c231b56ee1d0b76acb87c24498037f5f2f483df009c3fdb060bb2. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZWFM2336837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052ade1d5f7dab00a8be1ef232f7ccb3c7bc18adfbc065f09c50be9d5805d314. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFM2336841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d7581a13ceff40c9f7ca8c17434a55b7524b67b1b5b7cdbb35483d96a67ead. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFM2336842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ff77af714b78aff00669a90bbec69c38ba8f7638ad906109e469e7f5247349. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZWFM2336686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efc73df1be2ca98260259e42cfd6a90b0234836925461be4e3e2086662f7b77. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/QZWFM2336688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0740529182a7ec0c3d726304ff2cc648be4f637185ea032399db593b22c111cd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWFM2336690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd7f66965a9e0c4861f746ead6af6d48c9c093c715ed7134ff40603a3a838d9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZWFM2336691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1580e95d8a39c5fccd52432ed61e8b6573fd98fcc52d9b325102d83fade468c4. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZWFM2336694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891659ebdfdf7017f85a92da4923e17ec7f198674681d1ca0f646a632eccdcf0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFYX2451544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f4be667cd8fe3373b677835f51b2f85fd8455df4e9efa7a5f42124b0e9b8ec. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZFYX2451545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe1106cc05c08e387fe89778584b424f5565e9e4e1f1bf6eb885e5f7f9d6eee. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZFYX2451547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011e415c9c110df5fd6adc9e3aee48f769224b6f91f03c0d0f763e52fc2b5201. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZFYX2451548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59ac8f7a3732a91d637e6281ef1910ba3bde685b1b58610cca493ffdbfb40c9. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZFYX2451549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999d74f3e4aefe1c713d8e8ffb2219ae196145fb54a475a0e56a341626433fa7. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:51:48Z), 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/QZWFM2328009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce1fa175dda947ee6e9c6ae5a1201c19363a56f8382572c1bfa8f066eb1a4e0. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:54:45Z), 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/QZWFM2328011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe450be0a1a6e0ee989d55229c5ab8c40e3f497d338cde0f7a6634f8c8c28f28. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFM2328013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4617032c197765e1356c43501cec2d32dbb6c3e27134a14c2f25d29d01c517ba. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFM2328016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7d507ac203aaca5a6c80c3f7bc88f226df21d750faba2ba6911c101e3120eb. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:36:49Z), 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/QZWFL2383134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf31d2d605c35b69eee4d8172fef9665a4472452337204cfaac9577142b41a0d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWFL2383138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5518bad972d7c024bedd83ac00bf79bb6ab9c843f719e579943843d0dafedd84. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:34Z), 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/QZWFL2320664.