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 0x473e1f2a86b99b04c9c55d72e720a39b5a72c5512bb1969692a976fb778c5a45. 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/49b0e5f7-6fcb-47c6-8286-a75b1893b24f.json and https://artists.proofprofile.net/proofs/artist/49b0e5f7-6fcb-47c6-8286-a75b1893b24f.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 0x40e2a7ccfe2dca4d53e69450cd15717a1820734b4723394a9e462c5c614673db. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/IDA172424048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dca537e1fd23520073a4be79e1fabef758861e03f7e1123ed16979f7917748. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/FR10S1847495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadc04873025746bd7eada6d779c3671866ac56ca2f1ded09898954ee4d099ab. 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/FR10S1847496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcdd1c7d93553ee9ae854a09b31efbcc45f667041c3679dcd4dfd77e05c2027. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR10S1847497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349d1f04725f3bae7b6b7548eb22bcf3dea32c216717e4a6e193e05f6d014656. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR2X41748495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf928318021c924594f44fb0fad9b85453c32fdd59df87225e56a4cb8c7c6b6d7. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/FR2X41748500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d52ddd81375751673d65a68048d59bd8b998f7291bd0da319147f727056ba36. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKRKJ2307348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9c855651968b2707e9efe6a55b3b8bd08f6ab2a9dc57544a91f25208b293b3. 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/FR2X41890904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d217437c345df922175a0a9f321870aa9e14c3e6816fe9facd99f676a114ef. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR2X41890905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a97fd79b13aa515947426f1965a349f1ac97d7a319ee6102348026db419b0f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR2X41890911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58161b36d0193d364c15ea53e36b04f56f19152e2db475e18f50b0a220b08864. 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/FR2X41890914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0584b87669aa8eef30bb3ce3aacf950d297ca5ef012b00b7d8479fcdb23aee. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/UKFT41826012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd33367ae742a7ff8670d51375c2d0baeabc3c2303ff5d0afd0223133662d28. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/UKFT41826018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910761792610d149017e7b3e0a651d81772fdcf237869952413366cc990e0721. 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/UKFT41826028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc8610b8058e7781b2602dad2187f0c25234f61893046bd45a5aff4ca0a9e01. 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/IDA412104228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d24f73e958b17577bba31414ede658500856dad225b2b52e1b87e24104b3319. 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/IDA412104229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe288a7ced4aa9587d57b0cde83db2ba5c31be93ff4fa8eb8b43066a6e4ade3ab. 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/IDA412104230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b77d2457f63d864c87007dab4a789929854427d0260b54716d3128f24a72736. 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/IDA412104232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7f3edcb2930f83d8dc07114254dc2692478df14f4e9ff3b653de04e6645c52. 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/IDA412104236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb636e8104c74600447c432352f503e7a7f447c5ddf546dd0361d1cbe4aae3eb3. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/IDA412104241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9fbacabdfce84ece429b58e9a52ad537c797ace5a900c6270220f7c0fefefa. 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/FRX872109893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7594cfab9c1d22a7146c39bbd3dca24192d8316c95e3dab4a044973b9b286c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:06:07Z), 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/FRX872109896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d741184252a40f4f40ca0499ad5035472cce81ca1f94f811892a3ae0db1b502. 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/FR59R2265800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e2bb239fa4252a178fc1688f4629cd042ff841b5ad2a8dde3731ee99d16ebb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX202200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15272313bf4b47dd1f68750323e58a9db254a753e2e47d42bf7cec9d845ff705. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:58Z), 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/FRX282367035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2949053a5ef17d6034e386420e7f3ced1553fd45012955ed104eaa8e11182208. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:38:00Z), 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/FRX762321795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbe508771dcff4f74ddf1dd4ec25b73afdce43ce198767601cffca94b75a638. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA082395947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc038264dfd0e65f8ae4a8ba5bd4f63f5f2a76559464c2cb13156e4c104939eb. 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/DGA0H2351819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d741184252a40f4f40ca0499ad5035472cce81ca1f94f811892a3ae0db1b502. 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/FR59R2265800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453c335c687cf983bd73783842b39d9c3db9da8b9346567ab598536c3c4ac8b8. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/DGA0H2351817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5305713fedcf109be61accb76833f1fe4984ef07da6509da9b1ee506ade5dc77. 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/FR96X2220691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095d53b5d7400f36b4babfa57d09423d43ec1dfd0f039c4bff36bd164d7c490b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DGA0H2304488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca5f9777cb7f311a9f9e2406092cd89e54a1e9c28ed751552173ce0488d1a84. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRX872330684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c6e197ca8d52719a7d2d027a52cd98513cf067b3758c329b4f200e42ae3cc6. 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/FRX202224343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0ba4f8e770cc1a8ebc8a2c5bf0a80d68e88424859f076e181f02c597f917d3. 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/FR96X2296187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a030d90f66181a1e30530c49e31c6dc4d0d1162142ac02bce3aeae7b47d2b22. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:33Z), 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/FRX762349328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a964d7ee9b4acdd19d903eb7414f876d8b9e33b1167080bbec8188533846a2. 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/DGA0H2304486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a22e173500941b16ca152cb8b5f5cf4a81129745eb383ecb5cfbd75ad368c0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FRX202200814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a3a066f590745e6dedaccdb486ee7cf9761d5775063b4be72b20a63083d21c. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DGA0M2489802.