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 0xbae25afb14e7ecd9db3c87e7f60078f6ade9aee3c467e89f91aaf1068883431b. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aeac5583-804d-4c54-82c3-41be79bfc12b.json and https://artists.proofprofile.net/proofs/artist/aeac5583-804d-4c54-82c3-41be79bfc12b.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 0x04c0e621c7167624575ec08868bc2aa508a4ec9cf42f5bdaf5362214a9669553. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:04:46Z), 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/QZTB52575760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cebd15d8bf3a7204bfde29135b17022f976675d7d03f2d23aea89656dacf84. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:39:35Z), 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/QZTB52575730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe645e41d7fd47c272fcc3f8f443803160c34a5f6579a1655d55256f5de5ad0c5. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:19Z), 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/QZTB52575734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cc76ee59ce807204e6d4168f4805552fd348c47803d55b1d8015b4841facf3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:53:06Z), 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/QZTB52575744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb958735e5c5c8e0c3dbbb20ecdb8693f3c6c3f18bbb27c74d076f5d1deedc9ae. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:30:50Z), 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/QZTB52575750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db4f6e27c7c223a91c16744feb68037b1e92e970d23d070eb74d24ff77d20dd. 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/QZTB52575748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e1263189b815d50b6e9998a683f8bcac784ff65dd849e5ffb9f9f5e3e871ee. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:09:24Z), 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/QZTB52575761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc23f7cbf0307960a1356b901aeaa3baac3f944dcecef2025ba554a7dba8f175. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZTB52577956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5902e76aaaf91901c45682232b0bee9375f0a53081ef5231285f9ff08feba60. 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/QZTB52575746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7e876c5939a137d1c51799ece3574ea5c5937a8729f39d8c4f003fd76c02c8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB52575731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c0af26a228d5890ab53905209145a9821721488f08c89f0510324b761b50dd. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:25:54Z), 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/QZTB52577978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce68685449ecabf5b3a8e90fafd4f4d5bc8ef46ea3fe81b5c69f1dfdbc9644df. 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/QZTB52577979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb344c29d4b3a4a44bb9c12771b50ec7f8285ad3bf5dbbc6cd72e73ab2a0f136a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZTB52577980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485250194fa08ad8605558c50f23a6e5152325d97990acfb39d5abd922bb22a8. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:00:10Z), 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/QZTB52577981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6de105102411dc454631d6e8d1789add57c07e5827a4258ecd0dd0a3efaa3a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZTB52577982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296803521851d182116f66ee86796407c15ebcda9a7d67179aaa67f9439c3ca2. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZTB52577983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf41c5412321186faa49db9fc4088620156e046539582e69c5228ac95d962c3a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB52577984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d49e7e246cf25fe3cc5781770657db440de13fe3a7e3dbeb14e0e9025d526f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:07:29Z), 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/QZTB52577985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24484c36cae44a327310126db382a5559da0a753ddc8408466ff84088b1f16b0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:00:54Z), 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/QZTB52577986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c864d315d922d076b7812f9f7685a396508b3cd9793657d1be64b7622f2d52. 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/QZTB52577987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540c53cf37106df3519ecd5e200d88da455adc40998bbe9a9e15f115975bea99. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:17:53Z), 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/QZTB52580585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf164355beeb4affbb890a0cbcc83a9e2ceecc6ef1ef7090a255413324d7f41f1. 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/QZTB52580586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf504d2e1a0198eab0ab634214965d48d22ee0abfee175dfcc89155bd0568e10b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:39:15Z), 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/QZTB52580587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd285542380b4162b1d13adf861ddda464f22f6f0927a25dc9b0252d877ff92. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:22Z), 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/QZTB52580588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137b9a2178854ab99c78fdd686cff8a095e96d2e4e6aa16d8d12651960c15b85. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:01:47Z), 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/QZTB52580589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8369fba2c4a7a96e8aeab1092564581f18ee281211a86ba639c579d2fc470af. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:44:33Z), 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/QZTB52577989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56aa5f44c8beaf1a5742c71fd1434a0db28d682e43fb0f5dc6b2af7cec19331. 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/QZTB52577990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3ced824985cf75b4b5931d42942b05f254f85f63e73fdb17b835d493530b14. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:45:58Z), 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/QZTB52577991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647b03d8769f496e8d4909537f4bfe5b86f4f939efc04c96d6a579e96899b03e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:55:34Z), 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/QZTB52577992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40bdd18eb3e2e57846a0716309f624a7ecba15ed74a132de417be85067cd448. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB52577993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5720d8d3b54272cf66992e905e3cf62326a2ead71c379a88960048dfb287e67. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:32:21Z), 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/QZTBA2585270.