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 0xd0576e695658ec6e7c95b3c055bc6b92694509676e684f71c599d2cd513130a5. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d151bfc9-811d-40f9-8ac3-9586bfbef508.json and https://artists.proofprofile.net/proofs/artist/d151bfc9-811d-40f9-8ac3-9586bfbef508.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 0x709f955795800d06559bc24352b64df2b4b1e3271d611a193f4a97ab9518dfc3. 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/TCAIW2481271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faf470268bd55d5816741141e8e884017486f29fccdaafba01fe3f7b04782f2. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:27:17Z), 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/TCAIW2459469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7762d30e53a6c07c8595570ce85d1a77275c0406cf96ef7f7fc28d935eabbc. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAIW2469947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531b36210403a4f5dc58123c25e87080eb790c754ba2489bbb6821bec05a16f9. 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/TCAIU2407052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab85acb5ed9682fa3db5d4633bba4c110a406fe64a9bbf8bce835f91540d5b37. 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/TCAIU2405925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df6409c56d2d1a4b0a6882a822e605672855f16616348e86c1130bd4eb210db. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:18:49Z), 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/TCAIX2476389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6577dc0478734221deaa84bfcb768b39ad860337bbb8f929f7af93b6870a40c. 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/TCAIY2497906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fb1b77f7bf824fc04ba1b878bcac605f9fed6c1e8ec9097efdbee81d95cfca. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAIY2474304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa973ff97399a2fe663c8d7438e3ce21ea57d3040944d687c3224ea45fc7e262. 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/TCAIZ2411377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951daccb2743cc05af5e0881ed07c0ecbdd117afd6569c995e3da6c2255c324b. 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/TCAIZ2422564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79a2eb16d31709ca2d5ee508ad0229426b18618bad501a52bd062ac358cfcb9. 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/TCAJB2495762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421b54018aaa3cac934068ebcae4634006f0783c3a9cfddf210ba6027399e183. 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/TCAJA2495501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33fe2ddf2b67cd199d5717fb337fe9cd49f8a3a688de440ea569e68888f45e1. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAJD2415210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7347f8f55d499168281ff043cc8c4a002385bbd2db769e50b1208fef1bbda2b9. 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/TCAJE2502792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3243c49d5f3a61694e9145fbdbc7176db36edddf13c231c0fa242ba350883b76. 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/TCAJG2511032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4200f2da67013dc480de55b0d1c7a94c801edac5ad8574f7b21fa2fa3d4579dd. 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/TCAJG2590498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33234d916897169fa93e2786b9641e6a1f118be003780207ddd0093b2488b0cb. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAJJ2519656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9e23d06562281ced9977b913e8fb6bdd2f615a879a8f7aa2b739b9940c0d46. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJJ2531700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd673509e4310f58121eee107076b40b29cb57d08e607beea130551d40392949f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:01:20Z), 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/TCAJQ2503057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44fbd0687ab85da1f929b1067f51001eda72905fde22182fdbf1b23ce4e3287. 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/TCAKB2504482.