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 0x5d0100c6f7812425abdad008fc702fa55cf6fae77453ca812d33c4b414a11f52. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90eaaf32-d130-4651-b39c-3b9f406367bb.json and https://artists.proofprofile.net/proofs/artist/90eaaf32-d130-4651-b39c-3b9f406367bb.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 0xe92c584fbd73698dfb69aab108bfdd2cdd952169ed345a78aa6b36448d1f2603. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR6F30900420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ac31f2f9ddd8d526a83f361b67ff0b55331d66e86e06bf83835953f397ff8e. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FR6F30900480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab5b20a7204d19043e7ed81d3979452ae5f9897ca7a9e859b17339478679aa6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FR6F30900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cc776d3dfd7a47d50e519aded4b4e4c9316cd72f4225ca8252fae19808c6f2. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR6F30900440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7ade5310d11533f04118f82c1ccbd2316cca940bdcf1164870e26bf95b47ba. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR6F31200850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25427d1d9aeb61325fd1819bd176f2cb2fcf569df6d9121a4619ecd2416bd5f. 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/FR6F31200830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ec65b007c91c83d0896706257b88cb64ac726894229466788944b37cbb7664. 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/FR6F31200880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbcbbd4e48830b1e944ef9aae4f1d9610381a2bb237842c5f7b106ebc9dd2bb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRUM71502932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3262ab758c29b9bdfa35479bd2162885a4283c2eec93ceaff78f8d6c6be7e560. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRUM71502933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068ba2d4c734cc4b9d6137d7509d0095aa9bf38fcde69fec2ba124918f140fe3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRUM71502934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89f5fe3469c0032f11a2b5646e8664dd797f503c26cb98cbc46af346aef024a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRUM71502884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a88e9178142975c4de7f32fde16f447cfba1ea6d412e12ec8d9aff2332215be. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRUM71502935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ef56c6ef37c28d63bcef8b7d4628a28079fabaa397b588b9689a290d7bda58. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRUM71502936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f443f668d800f6899a47f6a67785caefde33bfe80cc121e49c96e53ac21fd10. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRUM71502937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce26233c6fdc44fbf158bc88a35786d14958265ae23fea9eaaa1b08d24dc00a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRUM71502938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2f9ab146e32073c06f6d8a99325f3cf47033c4dfbea77fe314d446e171b51e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRUM71502939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bb828a0ac748eba9341211d9823cdb84ab759c73bbad55b313f1803e91cab6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRUM71502940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce72ca96b996b05fcc337c802d09079228dacb8b13d6417575176fdf47d2c52. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRUM71502941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a4e6f05cce5009256418ab8b422e4ba97721ce7c18d1bd03630599eb696853. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRUM71701474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0abed370bc1135e64839ed2baa35d2c36fa9a207d9588d6b124c09282352cf. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FRUM71901455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf0fe68c8ce71aad7636347ddbeca0d3ad161e4e9190c85014a614c7a147957. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/FRUM71900896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9067e633da9f406e216facec1cda17c63c5e28bf9a49d03cb4d42016c6b7d5. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:39:00Z), 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/FRUM71901420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe118912f03352567ad64402f0b9cb2a11094a66e51f1836922f1bc4e3eadaa36. 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/FRUM71901463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a0f0892183b66d6f69fa42482e9c45af018bee079a168cf1b2e0e2a99711a8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRUM72001845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964e078985a80c07731c3b0806c5c030c21fc7fdaa7a8843a29a06b02a36e9d7. 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/FRUM72400326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a5b0eacc56278fe9b729c5df3202729bf8d7a181e553c1e82248aea7246ae1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRUM72302454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb85d0787a3002bc76cca10e1522391a2fd477f3a4536a350f3ea8e644f98fd. 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/FRUM72400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c1b4865bd5f0836b5995adac7149724687ac103e3a537d64f5c674d5663dcd. 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/FRUM72400324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b49e255d418f0d9e03fdfca0cf19f63e0a2e40ddfc06ebf37abac45efd154f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:44:42Z), 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/FRUM72401110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed0127c77b47e11af9b9e6b3f8ce8bfd544eb44637ae7e694d46f94acff56d2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRIDO2012008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89f5fe3469c0032f11a2b5646e8664dd797f503c26cb98cbc46af346aef024a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRUM71502884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89f5fe3469c0032f11a2b5646e8664dd797f503c26cb98cbc46af346aef024a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRUM71502884.