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 0x52e03bd2baf191d30d205d7ee296bf4ae33ad4d17aadb63b853d2fd2703dea0e. 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/d7a02d63-80c4-4c05-9bc9-e50ecf82d803.json and https://artists.proofprofile.net/proofs/artist/d7a02d63-80c4-4c05-9bc9-e50ecf82d803.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 0x34fbcdb0d584e642628a418db9a32e7c12d765f7da4eb39df687ff9fd87586a0. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:35:15Z), 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/TCAIZ2463385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6d04a47850697b2d1f286ae2b2ca30c9b5c392ecf1900b1413ae956b42b50e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:18:05Z), 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/TCAJA2414462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16709c0ac2c1e52bea1f529a4831acd6b9fe3d9dbfe90c9e2c1d8d4ca142c966. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:54:31Z), 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/TCAJB2420956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe731614dc2899b4117f99386cb1c0e5ffc7ca5ad54ed233d9f51a23583da916d. 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/TCAJA2429677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188c5c70f6fe331b95781f74c78fb253f68b57a6b496182da297f3876ea8c27b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:42:17Z), 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/TCAJA2441446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78813a429ae56a6607032e50d2bb61dcab4c581a4e182a63a0821f8f6a24e57c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:04:13Z), 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/TCAJA2448697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0948387bee425232fbaa798d9300a92337715e066fafad6dd8fdf8db26c26818. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:32:55Z), 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/TCAJA2456931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313ffb8c794c9601a420385c6f34109c99d8e211a1e06f64d48f7f9341f7c04d. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:01:34Z), 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/TCAJA2469609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0028b8e2a06cc1b7c2ab3d85122d722a81d8995d58223a4a260cb276ddcafd. 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/TCAJA2488789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc077611a44fc60b3ecff18ddbdce5ae7685cbd2a922f785e8560388a98562bdf. 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/TCAJA2494264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a073efba676f3282218f152311efceac2bb11e453208f5ffb001b46e2f049e. 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/TCAJB2402451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45baaddbfd74d6d5ef2cf87dfb63edbb349492f68376794245fba01508759724. 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/TCAJC2431887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d101f1c7deca27cf317e59b27b8cdfd3b251f8088a6c84174dfa3b7af55a753. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:10:22Z), 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/TCAJB2441244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65721e38c140863c5b9fedfd88fde682d72ddda21170155fd148a982c0aa491. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T03:00:23Z), 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/TCAJB2451345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9802e8037f251750b1a289f898003738baec9a15656f8532c6bea210f686eb29. 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/TCAJC2443121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b04200ede7fe1961bbb9ee0ecc60dbe0eda1bdae18b62243843bc9a1ba4270. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJC2443114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e6bd51224458ef6cda2104571891d90528543b8d056835688cd9715f29e636. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCAJC2443259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29cea27db68b59f76066afeac4c40adeb99c161e6a90ef6e017bb040bd4c322. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:52Z), 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/TCAJC2443257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed80f845530d0227066df4593262e9d63f5496c9acbf55b76b08fed57ace44d9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:01:01Z), 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/TCAJC2443264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7bfdaec1c427185450b6f70531348e3cf49bb3b78344161704358ebef3d5c2. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:51Z), 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/TCAJC2443262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cede576908120d6d734b8c066dc5c12827f77ce3b8e6351e3be1059f832a560. 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/TCAJC2484775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b5a2e88986ef8534775193984748ecf89dbcae3918e7b1b8838ab6534d574a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAJC2484776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf75dbf686443926035fab5202cd573f35a0be92dd69e74462b9121de2da3741. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJC2484784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaad35d6f536c65c52e150c94cad28b89b778467dc98af3b30e704060a232f7. 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/TCAJC2484796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d4a1d73487af0cb2312e960bd4d0de8c31f13a6f9e4a53e6ae217cc3945068. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:37:57Z), 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/TCAJC2484779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ddc77591cfd383d34798fbb92b98f7af9fdbb6792c663b3b757bd44f1ab741. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/TCAJC2484808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72be9199ab635881b477b187f86b624a9fd4255ae0fea9fe0941d01daf7b8eca. 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/TCAJD2484812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145e3b2dbd3e507a519ef70b55a40c840e5cf6e0e55b6d700d5d92356c1eeb31. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCAJD2457868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf188f1b381974799e25cb3821300bd234c7617ce296db5de9593bf3a9fe65a79. 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/TCAJE2516731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636ac3546064d8359292180f41c933e1896d2692a39560df22bcabc228ed4482. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:55:10Z), 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/TCAJE2516746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a0a3ce9151a542c11130655adcc851b7722d413cafd100b588605457c9ff5b. 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/TCAJE2516738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de70c42cc6f1126f04af71f00cd93956e63861ecd478997590fdb083fedcbd5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:06:25Z), 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/TCAJE2516718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500ab102011e302ce19415517efbd4e961e6caef9c2dafe5f63ad42c6f757a31. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJE2516694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffc65e05fbce55f0b456ae4a8a678d9f840ec5dd41c73c2a56b5f578ee95874. 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/TCAJE2516692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf242d79c140b6e212805a759feb046c015f3cbcfece67f79f55b5240e6775bdd. 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/TCAJE2565553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83b5f7ef5c0dc4d99d662412899e32e2058f6817f28c63d26dca9246ded4e6d. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:57:31Z), 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/TCAJE2565548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49f422e7dcbc688ffacdb067db26c9b4cf5c8c43e650a82d5d299501e3974a7. 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/TCAJE2565574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcfceba5ba372340f3624a6d6f595e5366e1892fa5b72f3cb0046a5f996a678. 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/TCAJE2565557.