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 0x25072d3b158063de57c323124034d8ae997cecefa64d94ce34f00586d89714e3. 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/961bfddd-6ed8-47bf-98d7-5725103ccf6c.json and https://artists.proofprofile.net/proofs/artist/961bfddd-6ed8-47bf-98d7-5725103ccf6c.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 0xe195f6a1054a14741576565eb0dad764fef14eb9a72291acb525a54ec58d2986. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAGB2292331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafd1f97e73acb7898c302a68af10029b1cd0c919cd5d22a8a3124445ec90b06. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAGB2292346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf9c70c84691057b0dd60c1da73ca13d78aac3eee6112270dc4f3b338fe7591. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCAGB2292372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365da410a63d5bb2fd7654ad2fc234faf0fd9514049ed5cce7f70bb0f87b2559. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/TCAGB2292375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72927d982f990bfaf0b39ea42f96ddde4358281d405b15f577daf377feb4bf54. 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/TCAGB2292384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa094b05007aa4cd5f5322011a426308c52c79bdd5a8c83eb7cb0235d723370. 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/TCAGB2292389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8072bed870a46e79cdf0096163cc537cda89c63232ca894eb581fe3e64d5ef. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAGB2292391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c8abcec474b511375e9a0acb4b7c409e22253077c2c171c9d64ca3e71e21c2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:50:53Z), 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/TCAGR2244459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a42b0593c81517fc24ce6733ca070410650ab3ab925b5f03efc4848560aab75. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:55:23Z), 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/TCAGR2244476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fcb5733270463e8692fcc2d28941c35c603ffeeb1802170472988ca3e40003. 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/TCAGR2244502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657302520b539a3184fa07b7a723bd524579b8da82f71b835a9db4ad3cbb7b67. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:45:52Z), 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/TCAGR2244530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bd9850fc1199c20e668fd48a9b80dfe0af11bc8660e4e92b7f9ec5d87b2cdd. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:27:33Z), 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/TCAHN2315655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afa07d7fec3d2ce9fdd1665af5c333dd70569a599116e395a822033e3234efd. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:31:07Z), 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/TCAHM2325850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c5e8126e521c2dc1c94a30d71fee0cfd5554d6c1653613584980096352b618. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:52:28Z), 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/TCAHM2325865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41c16fdb7f15bb5ab659858836922d95c02e25758beba6a73e8e37e132b0d5d. 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/TCAHM2325884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28ac0b55625013597473347ab6bf63a854eaf5ab508c516efc60145616ef8c5. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/TCAHM2325891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afcfc3a70095c7b1a9d12e566c3bdd81e8e976049864f6c4b0a26bf16c1b227. 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/TCAIK2497280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a35716ed8920a06b006d39fe3a72902380313a570122ccf2a0f59f117b3393e. 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/TCAIK2497288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e0e2ba974c14ef00b83bec8301da53290d562dc853cc9eade98beab41079b9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCAIK2497297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f2bb7a3ee7643b7bb249914eca7f90054f984f2ed230234331d918e42be60a. 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/TCAIK2497323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bdbf30bf2443dab1a332b6b3574f3e6428a806b2f56d7711566630eba2a3a3. 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/TCAIL2497339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc766e5786fd6525ff1097197c917c3dbf0ffecc3ec929cc8454dd3b5fd2ce42c. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/TCAIL2497373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28636549342c1277216a0c0225cecfcfcd4cf5c5c91e5ecf8eca3bfa7788185d. 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/TCAIL2497388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1095cb00ec379f8a596defa747f61f2ecfd5e1363854bbe2f3c9c3e15c49ec. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAIU2407573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd04b97a0b0f6f5288ae4869435d7047e5b823467a7d68dc60577b7e97984aba. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:22:43Z), 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/TCAJP2592581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc64d60b26ba9aa544338083c7039c2b90a9b3702aca5e63e211f6108fd9b1b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJQ2592588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566d2a85bed538c529076b3846a344f99f54c9bc41499d25417964abe5baae02. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCAJP2592620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb112f5026dd4e32e5df492bff06a248effd833424ccad01f3460dbb96a1a24f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJP2592628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8263067352e549ec49a2fa10b3e63e1dde7ed92fcf4950c4cf7d7e559da3c6. 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/TCAJP2592653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61590edd695e0190b058c0de789599bc731d4c86c82ff5e46146a766dd90ca76. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:54:16Z), 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/TCAJP2592665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa726ad8c7f09bc29bbc0ffd68968e93bb6671adb0ee753ee96ec216bc206f1c1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJQ2592681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d1c65ed98a555941e2b8d418226ecf8032f56dcc249b5e260159006006ee07. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCAJP2592701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead92ba3678fd79673ad5ec8e8bbc4f7bc733f7bbe6daaba809d09b713f0b84f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCAJQ2592742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7444bdcdbee6da4efeb55f1735f17950a5198eca3a9701d995ade5ca175a1685. 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/TCAJQ2592748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd594d1b9beeec05e2d3a3e81cab620d2b710c8bead4449ac5dc0c30d3c21c2. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCAJP2592769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4574fb8d5658ac1791e2c9bc45cf9b1122fd309496bf55b08b6de9b7e9acfde3. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TCAJP2592787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd212cde40cb6b4bda91bc8b3144a4bf37c56670cc3619c7a29902f08e1bca07c. 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/TCAJQ2592808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65981ccfe5458401f7da181d9efc057b8c8b7471d4ef0604dd65befdf68783e0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:41:38Z), 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/TCAJP2592874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0a8d209b97eb361e861a556f2415a2bab1b3befdb3e9631c7a9a9adc6c454b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QT6632501675.