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 0xaa3a62d210525fe83475ebca2a760925e7a743f92f7dbfa62f1da914b529892f. 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/9fb3e30d-7697-4d2a-8e8b-c9c6f9cbc39f.json and https://artists.proofprofile.net/proofs/artist/9fb3e30d-7697-4d2a-8e8b-c9c6f9cbc39f.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 0x79e541ca7f1346929525e95ade58ab0a533ade29216befecccea17810baad195. 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/UKXN22544268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b92a99a0583abdc26d8b17987c263f4f41e7af768b005952f98c14db23b3abd. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/UKXN22544269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5555a851ae0894100171235b45813090d0527a7b278f41e788ae6f5971244b33. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/UKXN22544270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc730d069b96360b357f682e57785d186c8f9c45e304c28984d428004d9c4b8ec. 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/UKXN22544271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b166c62443742a3e827a14cceef03bb980731728f7208bd2d1ff4c13c53d5b. 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/UKXN22544272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c72bb9a89898580d9a6c44c6a43031f4ed702d1e1a3c4fe7aac3f430bdd17e9. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/UKXN22544273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7e1b2dc4ca5948b809e963e4f4252a89afffbfea7c45907ed8db4f8aaf9489. 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/UKXN22544274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb353f8db5d68be34f8e69e91ddd98fe726b48bd6c529d43a3b266385936d537. 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/UKXN22544275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2977b0027338aa9cd2f7de333e35280866950355db8069de1dd67b53f0af79ce. 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/UKXN22544276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7226b47fbc5495f08e72c38a507e759344d0cd8e1ecc74c3ac28712b77da7d60. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:46:44Z), 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/UKXN22544277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43fc250e335228a5ca9ba13bcb39c06d015714f53a6ab30c851246b9f8bc65f. 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/UKXN22556298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55ddd526ed0509695f5d80629c7f734e93e1989267d269f0f6e9db398d80309. 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/UKXN22556299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f6e85c3a42ff6da9ee377cc7a7db1601d88a506acdddc91f3e508e75bc4231. 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/UKXN22556300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc5742b0e09751b511e051f356cc85be3e2ed9f1e15c3516ab3c1bf8fb1b4c1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/UKXN22556301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc37c85dddcc8ea26c24582d6cd836f6493020c91caebf0dae89f6bdce7b9891. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/UKXN22556302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e23f45b139ee6a809597d06f1178756fa876517c052a1f91a36399697ba74f2. 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/UKXN22556303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2a2627597b3c1c1700d734c17f5f6b091684cb12c5b2d087a47ece66a42061. 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/UKXN22556304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadb83e9f3aa1b618f1a38d4a013fb0dbd8d95d34c3cf45e5c9345b4f293cdb1. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:20:36Z), 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/UKXN22556305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2a78ec16a0af069d87fcd146f759e3ca71d9eddfe4dd88409935f88da4c960. 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/UKXN22556306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0f00b32ae3eb4941f5b0af8a7e5ac2cb8aa0b68858ebc1225f4f84f517550d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/UKXN22556307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1626450ae4f91912e96c88e4ab987d00082cf4f960c5aca3e211a4e9697110aa. 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/UKXN22562082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a81230769ab08891c133379a4e79da115adeb11c88e335981b75e4b39e4ab47. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:30:07Z), 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/UKXN22564394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9231d79bcf43ece660196fe7f205167d5ca24f2221a93fa5f547bc7ae8b4b75c. 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/SE6I32516543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482116223c139a9f3b6cf1b6445f7080d6b7baa3e9936ffac9a4f13bc4b7e107. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SE6I32516544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d73b5cf411166888882d23bd3a02ef7c0c24eae2770a821a3f3e3c7ad87e539. 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/SE6I32516545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcd070f9525271f1a1c08c9284cf3082cf730c89aa421cd34b3861f5038c23f. 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/SE6I32516546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbf7b8c4caeed8b258d226c1cace7803409f378e59edbe825662c8420f2d943. 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/SE6I32516547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27928ede0f78b075ec0596a35bdc74c2dca30f852d7a8c39f7ce3ef4e675f9aa. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:02Z), 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/SE6I32516548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a5439e820540ab9cc5328d3eb7ef8e8155f3b26e387f80e8d9ae305486a3db. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/SE6I32516549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa907fb36be9837cf953f945120d71e9c16526cefda231f065edd183c65ec6806. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:20:52Z), 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/SE6I32516550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326ea2a215d4fb1b90d7003ef88351a9cb2910ca5f920fb2d7b8c26c790dd46c. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/SE6I32516551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a434629bb92d0848dffd73cd544aacca75cb51e7695e82ee53deec7045a8a3. 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/SE6I32516552.