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 0x6b67b719d4e1491308ef33075b404324fe293a6721f2f5f0ecf22ae31c224135. 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/5faed95f-cb03-4695-a24d-8d6ba080a1fc.json and https://artists.proofprofile.net/proofs/artist/5faed95f-cb03-4695-a24d-8d6ba080a1fc.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 0xb1a73ccd13b6552ed2ba74cd172806e020e096078fd6f94ebba306d371859919. 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/ES64E2304784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde6a21ac37c7e13c5350774c4bc2ac6d9249f8a62903b7d4b8d30dd05d38eb8. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:05:18Z), 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/ES64E2304783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336ac59f60079925e539058043e649074b7974a7c9615c826941c907fc9e84d0. 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/QZNJW2312130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545160f148e0e1eb1c050b40211cf3666fb2459d9ee9eee090b326fe46a6d87a. 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/QZHZ42212074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8d520e85326e93da44c1e52db646114c92d5d5e198f04e6d32eb058cfffbf3. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZHZ42212071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751ee22741cc98cf76e47dd3d15bf245fa4896bdc9cf77db5be6b10574e6640b. 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/QZHZ42212075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3982a5239eeb32b63d4651e8603906edbd50f2d353809f011f7b2fb5f3fa1b9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHZ42212077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cc7c3fdbabbf6d69908172dea920a1d10c7fb857f1f214d23283c94d5c495e. 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/SE6QE2124484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5623566cb78c6b84c88f871ff4da1ef1e24f1b428c4e153d9abf92ca6af7f73. 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/US7VG2319387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b563d5531bb8f6df20f25d43303630cdfa52359ef9039b8ed522eb9bf9656c. 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/QZHZ32271247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36165317abbc8774065849fb164033ec9affaa36ba20d5855d900bb78f1982b7. 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/QZHZ42212073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b272566989f4645a8fd808373240a7a0cd2c9ff708991717e9188c0e36c0ae3. 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/GBMA22487598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b68b587f06f05b398519d124914cfa871f4d04a97c7605ecd0d8514ed1dfda4. 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/GBMA22487599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33bd4a19a6b682bd3fe39a6e84924fbab19988d4d7457484131dd97ac7dbb17. 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/GBMA22487600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ee498199a79fb71bfd9dda31f86aee6bd153b192b47327946f05651b561e2b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA22487601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8257360918d99e1263f6c959baf77921a531fc1c38d6ec5b9c42cc3d66e4c13. 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/ES64E2315621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763c071916937ac130ecb6c3facefe9b81ad70f3c25c8da910b1e81812c3574e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA22494206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ad1e872f2930940d4a968882b917ea6d9c6b9e7331d46e446ffd231b36a018. 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/GBMA22494207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f7537234336fa5244753d247fade63fc980c79030cf65e0ab808f44fa40426. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZNJW2312767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8b428a2e85d0f5a95f3825677d9cd7d40ea1180c024ee784b628135e37d52b. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/QZHZ62148831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c4e5fa5a7fea85d3a3e7a422e6dc0eeff171327b5dea20da815a9d98f7faf7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHZ62148832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c5350d187ebe827dcaab5a7dac0e7cf5d8a223b9ef76a84b6513dffb3d26b8. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZHZ62148833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40117641bd64df07ce95efe4cf4be74899d970d14bee739ac2379a3c62e2f1af. 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/QZHZ62148837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c76df2b591501dd792508c25d3c7346ea39d104901815904fbd7e035c191f8c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZHZ62148839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9348227d1c367e4473666772ac32331ca162ccdd6adb02c96f3446ff93abf0cd. 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/GX53U2468714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf3d584b952aa94db406f2c23393c68366b181ef94b03bf8452f59bcebed5ad. 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/GX53U2469617.