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 0xbc98b334f5e830da0dd0c5829cdcfda468e96e708494782853a7dd81b554ba81. 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/5621b5a7-6d7b-4735-8fbb-1ef80bd4ef1a.json and https://artists.proofprofile.net/proofs/artist/5621b5a7-6d7b-4735-8fbb-1ef80bd4ef1a.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 0x3b0ace42e32d1ab8afe84c11c6cf17f85b342e7d3c5a6c93f93374067116dcb3. 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/TCADP1872943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a06e638775027eeeebb36e9646a4ef6f12b0c5d95f79f3769edf0b75dfb47f9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAEP2092379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ddcb618371302e8a1e3c669b8703bd643aa378dfc96376d605a76fc05e6882. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:17:53Z), 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/TCAEP2092410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aacf2fa01016180c00ea0b1e67b5d8f156f97b3b008d481f8e10879ab75e7a4. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCAEP2092415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a586e95fe665a4ab5645d433716ed5f7743770d54207910101aa73e9815d5a6. 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/TCAEP2092419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dc70d8d3dfb66c235488645ab2dff5c8568f2dd1e662cc7849bf55cf3841a2. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:39:14Z), 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/TCAEP2092423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c384939d878eaae1ad0f70e941320c01bbdabb0b43e097e0afdc3653e897528. 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/TCAEP2092428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9216cb1c2ef476eb6f69038d9b9b700a5cb77fa684923478d8772500576d4828. 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/TCAEP2092430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63209f4374820fab569becf714dd5801b17c98cb9ff02316f00bc3a9f313f8b. 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/TCAEP2092432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760e1088144e87a25d224230d221cba67c75f9be26ad4e36452d1ac98c6d81a4. 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/TCAEP2092437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550afdceaebae8e7e535c1685bda134d29daee8cf43fc4b7fab906ee835bb3aa. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/TCAFZ2111379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80925273cd1524f22a26d7c2cea911e455099dfc2f3fcce1d3bbe42d3365d2d. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/TCAFZ2118825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d05195ad5cd8d74631ab487714927b6dd02c6fcecadfcc95b5df026501f1806. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFZ2118845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9a31c5538f8868a117b005734e9224dadfe28715176b81d70f6a2f0846cd30. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/TCAFZ2118849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa4c5c273806c13c864c69fe247b8359e4ff14baef3bec3ed22c0c8185e4e9c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAFX2174820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcda47b2b96a40d3773a0312cbf537617454d03c4a1a65dfb3c92bbd96e095ab. 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/TCAHB2395594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f892e622edb5fd64741936a349f7718c90afdd4b918fddb0e63dd66149c59b. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/TCAHU2492196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f2fce392f606abdea8cb7d2edc033a76b03a9b06f1b410fcaedd90142a0613. 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/QZK6H2483752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3321f19c987a6e188f59a69e978294edc27fcb98dedcf2bf54fa5640a19801. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QZK6H2483754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8006d3aba9722ce68cd2390c224186806e6ea0ab6d219d4a536d9fc114c745f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:51Z), 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/QZWFH2471807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69620b47ed87a8ce2212875c1c0f19ef32e6ec6ac03f3ee7a8a2e612c39a971b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWFH2471808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479d47a0a54cbd34ec9930088b3a980580a7499a23587f76a59c7b36e110a77e. 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/QZWFH2471809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fadea8a030479ebc9d7fdc1413cf35686a25d769b3ac7d78dd9fd28a67fff6e. 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/QZWFH2471811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d073dd090e53ef1048117d41fd49a83d43cacceaf487f751348b3a489cfa07a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:36:28Z), 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/QT3EZ2461945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85774a0c51c0b71b441f01bd5c78ca8d33c7ce10db2803d9d908a74185aad0b. 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/QT3F22557196.