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 0xc3b4addee02c03c468c9f17bdc0ca931f5ffb4269006c44a82dff9b1ca224de9. 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/c61dc4fe-1fe9-4ecd-a24a-33c2b2eda1e5.json and https://artists.proofprofile.net/proofs/artist/c61dc4fe-1fe9-4ecd-a24a-33c2b2eda1e5.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 0x79df27c30ecca1eda4002cedf124ab73016854965a7ce51dfc5dc244e18c856d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SEVLW1100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324d8c031c7594230bc831772248297b89a1b666ddd287bc534a10eb8b41d663. 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/SEVLW1100602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc054ab05d9b08f8da2b40cf54511f611dab1b13d7360fc306e12129d737ca437. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SEVLW1100603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63c7ca2c9b3cb2531b414ac2ff1584512da2367e60d8188af48e0e6ad913074. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/SEVLW1100609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52fd224c68d748d072ba3e90d9a0e0c0aca8934f5fc95e1eb9c7954075a6dab. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:50Z), 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/SEVLW1100610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb167baa1c1b1933bc159a031a6df2a2f585855e8700efd3d9a47ecdadc8b2413. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:41:34Z), 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/SEVLW1100612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd852432dd56d4f0a90401755e761da0a98282307ea3d3366fe36aedefcfbf20d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEVLW1200604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a44da7c53a1fe8565c4125d34f7a46e41472c7787c459f3645f3046b4b1aefe. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/SEVLW1200612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc264b822de74e7b57e9788c7587ac6bc3f4d45283dcdaba69a6bf886671617. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SEVLW1400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4d8d6e0d6a3daa58f9fcf30b1645904729aa941675c626ce46f9dce019303b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEVLW1400603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cda1637fe58f5c55e9b4bb47a33549757c2d15bb1fdc6f634253c1325bbb04a. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/SEVLW1400604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18cc02cf97893293aba3718e9dff7dabf69fe35cd377da347cf1ad911460014. 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/SEVLW1400605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a7ca6b7d6e61b21cceea401ffa8e80b4fcf9354c356ec978e00da4907bff06. 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/SEVLW1400606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdec29ed786dcabd14fac23915308d8fb1f60648586157e19c558b8f6fc4729e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/SEVLW1400607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca73729a04474fde040ccc33e24a7fc1ce018243ee4b865b0d5db3b17689423. 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/SEVLW1400609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285900614750dff56872ef9336f0d52d9803d74e37e0e030dc56538df13f6e64. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SEVLW1400610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead98a01597328ceaeafe26679a819c2c3327004cec6a37a7d9742483e8a639e. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:02Z), 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/SEVLW1600602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7ed5f8ebc590983438c4edb9efcd484488003ad0f041f631eff38b36da4eb6. 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/SEVLW1600605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d312f9ed29373f9fe935c2188a0cfa971d857b18d6be01746eb9c185e6bcbc2. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/SEVLW1600608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9b685322ab398a907759101f79504a49a9b06e8d117bb187a110ccb43ca6ac. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/SEVLW1600609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b35b5505887e7a7b2d07ea6f0171e66bb71fffb95f6ac7a884237b35c4ca43b. 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/SEVLW1600610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7966bbdf7c37e0ffbf0fd66198be2d0c42a16dc5fffb908c88372c155831b413. 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/SEVLW1600612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a937d33424819cf5f3a60a9c2c4fabc12611842c0730f084df72e743480fd51. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:36:02Z), 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/SEVLW1800802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2ea19759d78aeab3f1798ed8a77525147b74c3c595df90b3a24c4be837dda9. 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/SEVLW1800804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd099cda113593698126efa413ab2b88a7e9154696ea52c481f5319f2d9228528. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SEVLW1800805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3174197891be02f01b4d3d60b8f4117b7f64bf092d781bc0754f249a96a86025. 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/SEVLW1800807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50cdf6d0bae7edcb814fcf0b106a6dc80a50e6f816d4d1df67c75b7093c5c99. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/SEVLW1800810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb8df62f53a4a4959f62006000d0669d89b9c20d07c0ff98f3542176df29a9e. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/SEVLW1800811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f0896295c7dcea627710a1c267db4976e9d07a50f36d85a88d6629735bd5a6. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:24:52Z), 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/SEVLW1800812.