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 0x48c8025a09506210883d7524df57da056eb1972d271fdffe009b5319fdd5bc34. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0104f194-4f2b-4e9d-8e9b-a99cb4b3b316.json and https://artists.proofprofile.net/proofs/artist/0104f194-4f2b-4e9d-8e9b-a99cb4b3b316.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 0xae0dad3fc6c841e0f58dbccfbfda46121546e1d36f667a343f5d2dda6cbff109. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QZS832300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba438aef8e530892472d4651bb81e4a6d70bdefd7ceb4c2c386d0421ec1b299. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZS832300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff99fedcdec2d5068b78e45ad811de339da0689d840b245a763384b9de9b97d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZS832300022.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b934e2f8a9d9616aecb078caa7ad515e941c467fe817f715370e04b029c1f40. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBCMQ2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c913e84bfa16f7a7ac52fc605ec859a5c632a0445ab83a52ae63e80bcc20bcd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBCMQ2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ed06ad07697aa095cf6f0944bb7512cdece297f0d0ff79af6d393cfe4e8363. 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/QMFMF2010542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fe19ca3dcc1f745b178585b5a4a7a0019df02f03dce4380cd4ea72a6edc1d4. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QMFMF2010546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65aca793fe90288bb598885d48d952721210cf980a14224d9c5825a4dcb7601. 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/QMFMF2010549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641b35aa403215e27a3a56bd462ff42d40f5c58bcc949a134882635841b3ee93. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBCMQ2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3162a5193c5fd9778f1d7f4483821f8b03b12cb398557c001e5eeafc9ed2f0bc. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBCMQ2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2988d224d7534529a01c9fc87479120d059600c0430f2807058a6aa257cbc40. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QMFMF2010543.
Rotten Bun for an Eggless Century (Expansion Pack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9b3e43293df51b50f6bb98cc4f37bfdc7c8d0573227ec16a986e1495bf837d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMFD42300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffd1936641109e92074ac5ca205580848afeeb5a9692bf27fc17f742f3e6f99. 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/QMFD42300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2285b688961b6e0aedb17a0b5d6eaac5507e3baacecf4878ad79da6b83d27b1f. 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/DEZC62414558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dd8435e8c5ed49048515d5c5d58781a97ab4840f4db64578786be9389ef703. 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/DEZC62414582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e6f155d9ae3b8f2a1186f0bf72b89f2f7ac22d71a30b718b28cba2be9eff17. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IT4NQ2200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad49f6c6bb741d409f9f868bf5434745de2525bf63b8e40a9f10e2c7d6d806c. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/IT4NQ2200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe8adc26b306b186a2a179eee7c506e52317424f6214d069b64a3f3db63838a. 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/ESA011584436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b76983495275e8a812c1194f8cc0eb2e07495867b2c7b7c843667de3690263b. 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/ESA011584437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bf5b57b00054e6930617851cbf50d3aa3021d8da69aab1485c3927037e166b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ESA011584438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c22968d7ecae36fecd414fb326da170f004ebc4e0e2d8161910b758527c4e6. 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/USA2B2404173.