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 0x61c2647c3040d81f6918431af6b6d2e4c54043e19d1ff326325471c005f97469. 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/49174f60-50e2-45f7-a6de-ac0a111a757e.json and https://artists.proofprofile.net/proofs/artist/49174f60-50e2-45f7-a6de-ac0a111a757e.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 0x81220c536b8dcdc348e1550a4b01ffda5b5c902c4b1954fb9a7a8939734384da. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZES82173818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2b21eab2ec3100acc3be1608c046882ff673b278cfbd969a28750d682f7a33. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTB92397407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e584b12b6d9de71b28d16e30a2aaacc83c9bb039832e33374a02083ea1e458c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTB92397388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5bd267d919555349e82107c3b21fe28402e1f8c9238317d3a93d6b8b5f4ee4. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZTB92394404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bec54ef18d3d9ccb9cdbba7882c807f3834fafaed240cb6f86fba784450318c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX3Q92469699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184e10629f6cd013be93e38ec8f906f1923b0a1b20ed3a70b7c85d62bde8f476. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTBA2375159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e79055f08ffc26e1a97c8c68e25ab9d206ae4005809ba3d517b2a40c0bd89f7. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZMEP2278909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01512555870ea3385707295ed9778245fe9a088d5378a3b36be0b007139123fe. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZFZ42322126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf728c6bc85db662cc3d56c91cdf5980e133cbfac650c4c7ca5d97db334efbb6e. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNJZ2374245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd0433d98cd3c3b0dc0ced828c0604495d6490637c56511a42338566c9dbbde. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZNJZ2374139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89440cef31bca1c8b71c4cb37dd6ba68c88cc3ab6b0d0327162aa30b30ca7947. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZMEP2278907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ce52696cf363fd1e8c7587a6e17498b9c585e088cf19ca3d1c80562c28e165. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNJZ2386432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db933c37a10ae332b5004f083efe4993a2151d777ba0e5e62815bcd6ceb6bbe. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/GX3Q92406257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e6a97ebbace2d5678c18c2abb9e1527456c7fbf2715a5bbfb90ba4a59a1e85. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/UKXN22452537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae54613f393c5b1a85c87afef9b52e0b04df0c6b350a598ff3b033f28578106. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZMEP2278937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bfdb7f63bc2a676719a61f50e4ccd9bc20c2f710b5836bfd5045e1542e05a0. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/UKXN22452539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c916992cd9c040372779959b1f150170648ba53ca9c4ab18f83d37dfcef26f. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/GX3Q92469539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f5f3707981fa1161a13751a8889050308054565967206690492541dae03270. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZDA82378726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38caece8415c851d278be84ef1af1b229fda93a6e59ef68e0da8d2d556d1b9d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZDA72257751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f268c00d3a2ed1d528e40610028f743ee48abeabf50e2eebfd22dc3fcbe599. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6N2207615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7094c39e6a9f719f56fc312a8966cc069db5d8507fb98d9d57f3735c10ced66b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6H2362159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97911b77b16c044991886af83a346ca123051c8ce1ba367e3acc56bf08edb58. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZMEP2278920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8769722173d16409e23f92f71983af166860ea06a88b7143b7ab296d3ef4a630. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZTBE2309599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cdad09851a7a1e02985743e98c94fe31191a73eec989d390a8b74bda85ab74. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/GX3Q92470920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755c6c5b4dbbd0606c17e390181f9fd3120a1ce234483fef285f0170d3c3bb4b. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/GX3Q92469698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950148764c6e2bc522af0c4ff8a94167379e89c052ab7cc0bd7fcbb9bb84bcb4. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZMEP2278921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3b566e9f254b240de35d63fda1a8cdad9dbed2accce1455e0fbb4d5cb73c12. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNJZ2394690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7093cccdad9472105ec4b9eb05be2b33a27e090f323e8443e8f313ce1d885ac4. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTBE2308768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc976a222c48bff6a516dbb1b5af3388f3b933e1e9e7d2a3794bd0e5371b7624d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZWFE2385860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7e2a35800d75845587f9ed4bb2c2e7a3d9f1e58e750858075036d57f67311e. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZK6H2370072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611d670148a6636f2059eacec89f1df8252578072cef47112dd73bf78c058bd9. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX3Q92469710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0315a4368f4f9032bf41b84cc62920591b91109495edc42d90bbc9cacd4e6e20. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZWFM2307206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35033d208f7b0728f196efa95df199c0b925a654168cbfcc5fc4820769aa4a37. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNJY2201731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d29648c13c9e9d3c71ace470b3852bea186d5e8b375733984f783da7b2b0c2. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/GX3Q92469696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990c21d8f275d8268c1fffb089cdb9c67da28077b69146389ae46e8877995e73. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZFYX2453803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc066227d017f424cf43d4f30b59068e236a2e579f49338539dfd525be009035. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZFYX2444888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06e91a42372fab80f4f3c31ba57479d6f95cc4684d0554700ea0567da34c8e5. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZDA62468084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b938b8da9e50ca5d37f16a16bd9c6970e01f6bdbd66624adbb37f75142affc. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZFYX2447912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fc66e8aa131b5954f9cf94c1c406eb4115f5538ac588a87037eea0d44f36ea. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX3Q92469536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f16f402fcb866c19fbea1cd673794bf0a9fa321d9160712eaf54f62a5b2a0e. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZWFE2316567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8066af8cd3b000f960e9ac95e9877ee5e5742197949db87e316bf115c5067aa. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX3Q92469709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f253318f49e7b96ec3aab386a072f0aa6d26291619bb550aae26f9839bdb26. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZMEP2278913.