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 0x7a1f7deaf6ec5d60d3b1a42cbf3ee442ea7f1e8a7f8893d0994d6accfe5a1107. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22d572c1-ab31-463c-a62b-ce55c32ae9af.json and https://artists.proofprofile.net/proofs/artist/22d572c1-ab31-463c-a62b-ce55c32ae9af.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 0xd7ba7d1e46d227d74e14536f22115506919af18560aa95b880bd88dc21488abf. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/UKXN22480698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab63b0cd70da7b0ef9d9540fe19eeb1b84b93741da422097f74155263f5169c. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:51:46Z), 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/UKXN22480699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6044e8743e260f538bd1aadfcb5926be1407bf6af3a662a5752d0df863332194. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/UKXN22480700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc350bb53de7b744838405652c22346f2f8148be5288d398eb62be769713033d0. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:43:29Z), 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/UKXN22480701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1acfd03368cb22c946a504074a2e35aeb712e4bc815a57ddf5e5002b0b20a6. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/UKXN22480702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd0db1b0f2a42a5a054e3ae4ba3130c5bc7b16343a854e31457f250351e34bd. 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/UKXN22480704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd053b96de780626c90271c3cf50ca29808a3bdd69c6d3aeabfe58a5f380899ef. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UKXN22480705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670bb3f960d6123af6fdba77cf0b765cae1bcc4b45cb4657d7ae18e77d352abf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:45:42Z), 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/GBMA22444505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a19fcffac613b9c65d0440c206b4703974beba1294653f78cd039e92a3aa29. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GBMA22444506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dcb99edd096edc77bed6a71dc827b40ab33314648461befbe32dcea861ff5e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBMA22444507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12bd4a732cd7fc5f980207062032253673261b3f4e54472e465d1b95c7bdd51. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GBMA22444509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab480d7b83bf05b9a8ffd7429877143f58931037c4f30b019a2f3ddcf2e701a1. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/GBMA22444510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18096b005df03a949ba81f6da1742b6e2917999b72c04524dbda92739a57a199. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBMA22444511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53b6dd6b33f516f732ffbe5a50a03de824a50a308437d6ce029559be8a45bc6. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBMA22444512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fd3e2704eed250060f54f9de482ec1b31f9af8f21f2594292abcaf4564ca47. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GXF9Q2437790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a25c99f83013b85069cad2b0d91efb6b314b64ba8128156a9f204c687647c87. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXF9Q2437791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781004cde1820a899edeb273e07b7f7039da09e48ac125fc9ad0c4d09e7ae1ae. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXF9Q2437792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f6d16a5924a58ea7bde9ceb25f2c7f7674d39a00156945ec0366017aea1dc5. 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/GXF9Q2437793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942fbd8bed44765a771add5148ec573dbf945dee1e761c9286c69642afcd5527. 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/GXF9Q2437794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f75fd71ca5fd330e5a80c3a97a2c49b4360a9763f271112ac04d3660551056b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GXF9Q2437795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b3f75e689aad6dc0cc47d0e4647377ab1a5a861059eaae347583e67af94391. 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/GXF9Q2437796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0745112868b68c717da60c492dd8f70cafae7b95c645ed8029cfc5288ddde3. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/GXF9Q2437797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb09f370195e8125d08cbe13f9da7959377baeddad40f47e4505e3638effb239. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:49:09Z), 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/UKXN22589225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ba95d6ec7b589bdd709ab633d893be064a4b9fd1156ecd3c5058212757cb69. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/UKXN22589226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af9455a8844cbe20a8a54249e2dc44e6a5486f06d918ce774da464842e4921d. 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/UKXN22589227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113c6b46f69a48cdb451a5acc5d7fba56348038f801678f83e3ddbc9c1a688e1. 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/UKXN22589228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a6a5319c0657afbbf4222c1fdfe6bb5c61511fc8ed95dc0bebd60b8d98c030. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:51Z), 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/UKXN22589229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027889f8e24c5dc0cfcdfc1b47439cbf745a5cb4f562a2ff11af48af441edb5e. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/UKXN22589230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4d331d8f401db8358b521efc82a0958642bfa543919684367ad6296e034219. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/UKXN22589231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b4808c115c0be1f1a93cca8e49bebcb1bfe2c0fc7d6904d3807db58941b63d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/UKXN22589232.