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 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 0x396113cfed8fe6bfb922c94ac9c5f8dbab9b80ca5bf7dd78363d7d80a2193d7d. 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/304be86b-f6a8-43c5-90ef-49c28cebd6f4.json and https://artists.proofprofile.net/proofs/artist/304be86b-f6a8-43c5-90ef-49c28cebd6f4.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 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 0x5c42fe5b4848ef3ddaa9f7601d9295277d7af99af57a3e8c0dbc3d24ade11e58. 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/THCJR2182248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34287ecce21a9c91f27d219632bed5466f15ac615f1935c376ce54ede0964539. 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/THCJR2182261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69b2dc62ad5f942d5254ae4aa7f89f090b8f8bf030273820009bc91664fb3ba. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/THCJR2182257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d1a5e2a914e9bde79cfb38eadacc762bd8ac96a1354a6bc355660422ccbefc. 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/THCJR2182250.
ดินแดนแห่งความเงียบงัน
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4a76f24de147c3b29426fc1399cf38ccc213ae08a17a71f1f06eb0dfb75abe. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/THCJR2182241.
Mr'พระจันทร์ (บุหลัน)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b046c3b83b66115b97244f79ad88eba3fd498191381242eecfb911866af72dd. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/THCJR2182256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc842e9da963f562da076a0680537e09ad653688213d9cc04e53f112608f56b21. 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/THCJR2182240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107d0afa2819879a38fd36e9354b433cd3138044cb27060ee29b5c44441859eb. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/THCJR2182258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122307ffffc737e8e84d0b7a39ddb8bca2d081d381a8d526891c609b22a05c80. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/THCJR2182246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e9be7521764bda9708e3e2029aae09ebe440dab247ccd730db68cbe88cb24c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/THCJR2182245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b681b8efe3739bd8e76ee765597c30e0003da1c47a89a4fa5712d54ebb4146c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/THCJR2182249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41acf68a42f50603dbb20daa403822a5f3a1f1dc56aab598acdd99977ba7f1f1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/THCJR2182312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e950322820df07e2fb9bc510acfba3a462a452ed729aa04efbbad5096a05fee. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/THCJR2382352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6364a2cdce676501d4dd029d71a9e7795df2843ef4c3fcd5a84f783620021f5d. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/THCJR2382382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e41b6c41c57f2aada84f3c23c953a762cc857eea0dabf77d3c804ab273e1ee. 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/THCJR2382392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded9ba9d3b4d0006392e94a69e71e4e3820706cdc7928401fd9839cd9ee8b3f8. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/THCJR2482437.