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 0x5eab118961f6658d3634e5e2586c19f70cd9377de05725e31b5febf3f9387621. 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/f0292f40-62af-4355-b195-0fa962596cba.json and https://artists.proofprofile.net/proofs/artist/f0292f40-62af-4355-b195-0fa962596cba.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 0x9b12812b84ae3487cc015823c5dcb8989875d7a00205c6fc3d3738455a8332f3. 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/TCJPO2174935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf07bd0a516db83342bab579a35b3e0aea177fb8ee347fc184a580cb7053cad6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPO2174936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa696d643905fd7eeaf4b450e6795295eb7b6f69954725a7225245c2b1e51a5cd. 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/TCJPO2174937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bc040a4c722d5735beb771fb8b299a93511789686064ca0d66fb2e183bf2a8. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCJPO2174938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e508e596df23df920c6781c5d4875ffab02d8bc95a4e0cba0711afc324dc2d0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:35Z), 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/TCJPO2174939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4862233a663deb4409ef520c8862caa93b7df4a6b1fd350a58e1933e7c5925. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:54:37Z), 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/TCJPO2174940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84683bd7d4077885bf95ba171abe50fa59f626f4039a5c67e1ad5bab69cbb6bd. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:22:55Z), 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/TCJPO2174942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cd2f9c11373a2afe2d2d7f2a8746072ca63c6d9534b4fd19d862979f6a5a70. 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/TCJPO2174943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06eb5043c088ff07d7ada022227c8bd98e225c54d63358fde4904716101cfcc. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCJPO2174945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f9e94ce674551fd69105b2936d08917b5f14aa78fda4ce3217a7a26ac09530. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCJPO2174949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822731bd1ba861b9daad0815f355cf0969748673405c341a160022292c80c305. 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/TCJPO2174950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7334945271d45f768fa5b1752bf59e0f3d6e9153a4ad0519787ea1a5d9db29af. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:54:36Z), 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/TCJPO2174951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57422871118dc5e17c7663a641e4bc3eef84336243d9ee1e888895a734b050e. 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/TCJPO2174953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bebe44f3da401eaa5177340c398a3535c9b10c310b42dda2c39f4d53a2fd21. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:42Z), 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/TCJPO2174955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d80548abe9671b0a139b094f0c625ad3b20e6e023107460c2179745df1155d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:53:20Z), 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/TCJPO2174957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74bb3bdd635827e3f9fd095de76dd928ea0e888b26001c88dc3c78eeabcafe1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPO2174963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31389636e6b5370e4649030b270f8844addb5226805cafccb3867f9e6977659c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCJPO2174966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4353338be914ab1aea0aa918d20c2845fdca752a7132616d2dbbc7207aa43b. 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/TCJPO2174968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359b31aff5f98058aa6554363cf73f43d9fc8b9cf16e147d343e55428a976b43. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:30Z), 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/TCJPO2174975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b12812b84ae3487cc015823c5dcb8989875d7a00205c6fc3d3738455a8332f3. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:21:49Z), 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/TCJPO2174935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf07bd0a516db83342bab579a35b3e0aea177fb8ee347fc184a580cb7053cad6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPO2174936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bc040a4c722d5735beb771fb8b299a93511789686064ca0d66fb2e183bf2a8. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCJPO2174938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e508e596df23df920c6781c5d4875ffab02d8bc95a4e0cba0711afc324dc2d0. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:49:21Z), 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/TCJPO2174939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84683bd7d4077885bf95ba171abe50fa59f626f4039a5c67e1ad5bab69cbb6bd. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCJPO2174942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822731bd1ba861b9daad0815f355cf0969748673405c341a160022292c80c305. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPO2174950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57422871118dc5e17c7663a641e4bc3eef84336243d9ee1e888895a734b050e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPO2174953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9e635f77a83351e7c23f04a07a889c769447d9e3ccc92db8478248b4fd37ac. 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/TCJPO2174962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55407a6833dd368aced525f328a00f039cb39f5d28bf68bff13d0afc86674066. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:40:58Z), 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/TCJPO2174964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ec41e4037c86be40ddf2179c45076b7b252b9299d2d72b89a4f19a2b86f2ba. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPO2174965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac47859d50f6f295eb8fe005b4a294a7def753c58934822ecbe24ff318b4836. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:57Z), 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/TCJPO2175000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e6243976a48d68398a83371a7fe9d9300a8f4f53f23daec02741f67c77c501. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:59:12Z), 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/TCJPO2175010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3787f68ae0498ac3cfa674c820f00a5319cef5752832bd88e46bcdbc4d471a2. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCJPO2175018.