1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xebfdc28d663ca574add902168423b17708c74bcb858bb154d5fb8dce93100c63. 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/e20ea83a-dad9-4329-8b91-b26d6d3e1c57.json and https://artists.proofprofile.net/proofs/artist/e20ea83a-dad9-4329-8b91-b26d6d3e1c57.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 → block OTSBitcoinBlock must exist at that height 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 0xfef6f25ce3ccd1e77793d49417bf2577c6069571a5151fc151e0edeced000262. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:57:38Z), 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/QZZ7Q2556762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f9a4e20e23e4dfe3496fb2d1302561372364c248cd02c8410c5cf39f85c7b1. 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/QZZ7P2565590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2545b22e0e4882418be0b7432c1bc66453fa93bb3934562e4e8919d08fdf85a9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZZ7Q2556759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd292305320acbb1b5721bb784ccefe5035d5563e8aa7856c0de23804f9c62b8e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZZ7P2565585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb811df879278ffb238f95c9fed6cb6a75ea28a5db85be47a3a8498dc679c17ad. 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/QZZ7U2541656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23ec15942c334b7689a420999b40224eb76cac79f38430198fd92fb035c15e8. 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/QZZ7P2565588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ce6608e66aac57351b6e1d76ae6bfa2e67b6a94f5eba0c2fe8c107fbed4f57. 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/QZZ7P2565584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c37be03d413166caf61f74a5bab759cb96fa34134145ffe108133469cbd5bf. 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/QZZ7P2565583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b315e1ce9cd101f36ebd6abeee071de2c4f18298846c4e818d7bf3a8063891. 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/QZZ7Q2556766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9169520934ce57ee50ea0dfd698bde9082f31a775b9168d6686cb9522da004cc. 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/QZZ7U2541774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc0e96cb763c446b8abc2c8209a25587082e36ace356d678977f2a72dd54e78. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZZ7Q2556763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8107f5ae51396af723e3722a9000f6ac5216f6b04f481b85811fa29ef0077c7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ7P2565589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6280573d3e8f6d0ed26a8537ac417533cbfdcf13a4a68a48ee6777161e975ae. 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/QZZ7Q2556765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa9187b46139a8d9732ca2614569a95d23310b6973ca1be5470fee43b2c532e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ7U2541644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d675b3201478bb4e0832ca7fabe286bf5a00f109905aed32acc32b95b21f10. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ7P2565592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419028d679a325fa93f8dc1593837ffe8078a6e2a0e34efb66398821d78b5cb9. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZZ7Q2556757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40db415cf99d9bf2304514906acc50f06aa1d9ad47c4a55a97d3e69c59f26d7. 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/QZZ7U2544541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b53e3d96031ac69c3df19fbfa29c3483a419eef46805adcd1524a1f8a3b64b1. 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/QZZ7P2565591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a86f5ddd45d37699fad7a9b29bf2690f2cdb90306e45624cca8f9ce20b83f7. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZZ7Q2556758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461a62fd7355c6048cb7755cbf61a85975a9b2b7acaecc9c611bfe3a0c2299ff. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT3F52537244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a841b81a035423017936aebd74d87ac4726ea9ff583431e3efb68ea76563719. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F52537164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc395af90d9404e05d88dba273e78ca365b30b57e333751a9c92b371d82bdb736. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT3F52537163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecc8b3e8dc8195e51337631758d6fec73ad82c9a30d7cead50f16eb74bf43dc. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT3F52533521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf411b13277724c24ef04b5bb27b8f3b71fba6e90afac919273140017f9da226. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F52537254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ad7d6d97cc7003840886c1815741d30425981054ea7cfb7c966724ace7eb0b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F52537273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d20c36996331c2083a8404e7ffc747ad7f0fb73d1fa322f31d878ce89da3cef. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F52537189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c41dcf455b98cb2cd9acce68e5d120e31449e6942f075dba23a7c35a070a085. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:58:36Z), 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/QT3F52537162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ac9077833a5ba19296660877dad0e9b3a3e90932ed333bb9733aeea362f1c7. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT3F52537545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f7921cb295cf676b60e16fea9e3020df621088ae4713491c85796492139b05. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QT3F52537548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013c8b119b99f8fb9b386fcff2366d016d7177a68a975185874add87328fd7d9. 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/QT3F52537469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fa2c8b2ee7b256720f0c17c04161cf40d8f2474a0b2c37713842c38b598f9f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F52537474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb4adc1360279e1e6dc80ce84400ea1d119e1fc3fb50100e26b5a77cd4729b1. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:42:59Z), 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/QT3F52537421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fac9d9de6c1d22b67ca6759d5ffd5e1c1d925035c4c2443c9997d17b49c0fe. 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/QT3F52537547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378b5f997d1bcff96a94373ae73d5ba222fa1c14daf8cc0b6a6b7c572f000a62. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT3F52537418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201d858620d84a07afa34d71917a6cc9b19fce1aaa5ea83c415c105176182977. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F52537295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bc8d0283053b5aa2cba514a42eac881e728e8fd4000843e2828ddcb9200f47. 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/QT3F52537556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2c77ecda574b5affe9ded89d6306f3cc5ecfadfb2c28d7a8e68f397cfaf1d0. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QT3F52537294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd4e18caf53a83ad52072af6a52639b92072646d31bf44db0d7acf7d83e05d0. 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/QT3F52537321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb20c7cd9c5bd4bdb658d9ed866f8ac40db302d4cc0d5e4b403f25c00155bc2f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F52537546.