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 0x15d23a8e6ee34f4afec790944e5cda424a8c1b59b8f49bb3763aa3de82eda3c6. 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/076694ed-298f-4c59-8b38-e42f7c0426a8.json and https://artists.proofprofile.net/proofs/artist/076694ed-298f-4c59-8b38-e42f7c0426a8.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 0xbcdba2d87948d326dca2f997ffb8df9db9235243c7fa4bc071aaa64305dcacc1. 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/QZES62192471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb07f2a0a8e7a9270926a3126681936eb69ad7aee30d41282989f2d3084c235. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:31:10Z), 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/QZES52237753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a7e1227944350ad60991b91ad735c26c6af2f92249b8d16db88e847c89f0ba. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN72306879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782f2fedcfa02df55c914d2eb2794d3eb311dafec28aa6d764ee4cf13134f8ce. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN92390207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf687129ae2525a5fe7e20b78e0ccbd1e6cdd97b8bac3c08aac93d64ab076bfbd. 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/QZHNB2389475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48a170e0ac626c125a406ff3dace6da5b5a1819e3290928e92f971929aef0d7. 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/QZMEQ2374748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d231e6eb3a4b4597917002295c9321fda5805d46bb803f035d72d86320c61d8. 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/QZWFE2413715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc29d713a964c770a5dd80187dc242fc4735a411eab529b0800e590f7961620. 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/QZWFM2445769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea6137e969cf3af79197767522e022896897fa3f0318a090bdf904430300e4a. 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/QZFZ22519605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdef579fd85daf4a061184a8af808ab5b7793d99ad940f30882337390623e3a. 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/QZHNA2544807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc557f48897a9f3b32faf245bbff59ca5daa7e275025bc4d2c36be0dde939200. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZK6N2573626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203f6870104f0da491a4081fbc5b579a62e508240e79485a0b31cbba83c8cba7. 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/QZK6N2573627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43036c67be2656a12361b5b20e002fa8cd224cc295472e5bb10af040fd9ea637. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZK6N2573628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b95bc54155585b48f8e84e88e72561a5e1a5f1886040c1b35e7513ea82ff788. 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/QZMER2559357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb31ab3ddd6a93ed3cba37df088ef2ef33f662f97793869196c36e9f3c1ebe37. 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/QZPLS2502390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680f4a1ed4da27eeece355fb5726c7ceb28719845965ffe2753d666006987f48. 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/QZPLS2502391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1cfcb4d9930711342c427b6b0e2b6e5d8719d42a90e698d11f75ea09430d40. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZPLS2502393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daf1dd2d2f82fa5d1a3f313fe241387ad200770bb1df32494af434244fd5a11. 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/QT3FC2502998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f40d5f8e617195366dfd672a29ded072ea3a4f0f0e5e813b915e20cea457c5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT3FC2502999.