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 0xbef551469fcf6faa0a8cd43c51396de244cd7e85b520562c1a14984d11f9b6cc. 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/990e62bb-c79b-40cc-bb55-2f5833ac6155.json and https://artists.proofprofile.net/proofs/artist/990e62bb-c79b-40cc-bb55-2f5833ac6155.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 0xad681277d81973ae9c092099017f9ce1ec4557040056e4654d6da0e2dde26d22. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/UKXN22340647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3119593094c2001eab9eebce31383f49080e4065bbb3ae8ca795073f4500554f. 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/UKXN22340648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd588d43e111301cda0f1d8d113f82ea2a8724c5019e36b5552315ff2a2326600. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22340649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e90e916ef12c3da026abebbc99c5a4024010afe0a23b9791c854fc25ffcea9. 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/UKXN22340650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca1f092b592c8f283b55b3a0f55b8933da135271aef02783cfe2d8fc8bb2be9. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:44:19Z), 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/UKXN22340651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980a109aec5c9b08507d73c472bf80df52e54147633a4720ffcc77e5aec34b63. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/UKXN22340652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091301477b4d5c1c960d616ad80df0c0f1385508d45926f2bea9b3cae899cc1e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/UKXN22340653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59afa5f8ecbe51c5b517bb9e6b3139c3be9af0ac875d43b0627f1dc049a754c8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/UKXN22340655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a742c09b3af852dc5a3d4627a553374da34fe0a2b609d1f099aadbcf7736b8a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/UKXN22340656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fbc2278a55f29eba0d53d042fb7bd77b1d76c9822aeff70cc958678d970dcd. 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/UKXN22340659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e830dfde700296e1db2a072570e189e7c56b51cfb4356235e2571558e2c5c4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22340660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3c0a59b4e9085f053faa609bb66d550fe7c76c5b1928a32f6f11b531c543a9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/UKXN22340661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b1bf90310b1d20624a3830eae1240aceb5de8fc3851284fd8a0ecdd75362aa. 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/UKXN22340662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5da029588794055d5e2329ec3b02d1fa958fc20da5b8f0b5c1a6927087577a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/UKXN22340665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c8a46691d768e2ad5ca98f400f55b5df992b459fb88f0aacd88762d0d5a170. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:03:28Z), 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/UKXN22340667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ffda3156b5bf1c8fff1b5a9ae4d8a517beecfc78f11c9c6ab38f758041992f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22340668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e088e39f044dac10cc1a59b70af05032f9ae997817f62f6b3a4e1c4d5ae3e5. 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/UKXN22340669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6859e8419f9ade62aa03c172364344eb662c67509b9812b31fcf6009d92c3098. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKXN22340671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82405ac8cda06054b9bc774671e994186e7dbdb37b7d47823011823a1221782. 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/UKXN22340672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7da4e3d9c162762c863c5881410ae94a7bd5b293f2ce0d2b9647aca6388f322. 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/UKXN22340673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f74ff739647f49262a450c0a7a9edf9eafb630b84d31c2efc2d1f79b7cfa4e6. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/UKXN22373714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f916fd57c1c2fae620895f19e9f75d6fd754450e46f429214d45c3a7ecae42. 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/UKXN22373715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6da5d085b0d304eacb754b27c00b46929f2b24310e1adae0cc57d803de4a718. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/UKXN22373716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d1f0070e3b9a4e5abf30a9bf5f731284df2dbfb99f72e7a92b01c42e1800d2. 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/UKXN22373717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7da121f012351455dcb52cada499670d589d8830d3fea07db7518fea38e4460. 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/UKXN22373720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee95fa4ce0c2f99adfa74ad1144744c8c5e36712f125a63a0a5acafceb69fa9. 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/UKXN22373721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467ef3419e73cc5bdfc3088473a753373eeddf610deb6897611651af4cd23b11. 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/UKXN22373723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf08cbfa86a9745cec0a4c27149dfe41611041249c23b2c5962752989b665a55. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:45:41Z), 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/UKXN22373724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eeff518d0b2370811dbd1ee7f7191148df6eeda4571c33d7f24d124436c6d39. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKXN22373726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d05047b8705874d7f43d5f4eb82ed449caf4f702809a89f44d436ea077b5a85. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/UKXN22373732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28f91d008c4f75a9c8087bd3aa980019f9366a3c6172390342c4db9c32a70b2. 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/UKXN22373733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de2c3ad7adcd9d4776fb92d7ec6cd7379898679550ffbd2aa3611a14317e46b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:20Z), 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/UKXN22373734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543891999a5c30f6684918e5f768a87387f99825643b6e42855bb88e17723bbd. 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/UKXN22373735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347fb8cc69cef036bd910d2828ca3ae43df39666b7f4b7d5dc9596232a64bc23. 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/UKXN22373736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326e7a4626fa25b9aac3dca474346f3bb7abf1c8c3b860fb63b28e8c6d26e25a. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/UKXN22373739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b1d996a3a9be5481d0d085be9d9244d715c2021d049a025e899874ab4d9ed4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22373740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaceda53030f1e9fe428396a7f76a8823c02cb9b25b3c618b05a2f63ddedaf9a. 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/UKXN22373741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29ec0e40b69f9f1890be562075986cbc4759ac7953502be22fc852933e791ad. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:38:39Z), 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/UKXN22373742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0545a377ab93d4e5f0b9c68e04d732e9699746278797c9a7d13a6ba0c32464ed. 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/UKXN22373744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc416846c95b16688cab2db78891258ad88668ece869f35651154519cd4ff1a1. 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/UKXN22373746.