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 0xe1138422685adb3eedad8d269fea254310ba87bf694c92c189aa6d2475609057. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/190cb315-acaf-4b3e-a889-2cdc6c139462.json and https://artists.proofprofile.net/proofs/artist/190cb315-acaf-4b3e-a889-2cdc6c139462.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 0x9d9697dbda4c6d97528b7e6cc8dfec1ee205a987c93788c949f02fe9703d2e42. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:41:48Z), 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/FRX202044426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00799e3fa66477e82fcd874bd5ca6f90744890ce2c1e531e36ea4e7c1a08bca8. 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/TCAFG2094751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad040a70336cf8dbf105ac42afbcfb1f166248b0f650a72a8eeabf04e17aa90a. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/TCAFG2094780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59960e9df1078efe69315d92f0691118159142558f2e75c744dd8d61b2b79a7. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/SGB502457480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc64d74488dd34256bdf0da4f4662feb92bf420c696d434edcf1636b800d4c8. 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/FR96X2468137.
Kawanen Saur (Live Version At The Boston Coffee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb526247765561cbc8e8ac750a3fcc0b4caa220dea36cd7c2e2312b303507a57d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SGW502434962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e62464bc7b85091d6599f965e161f10e5e4afeac6a426eb23ea880f44dcc0b. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/SGW502431987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bd0b5e5511660547081b773bc45ded91bbb69eeb576d7048fed92993b988c9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GXD7V2278065.
Sauro Utangmu (Live Version At The Boston Coffee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6996146de5e615c3a0e3ff1e766ed9f189eb7af22e2aea357aa5b86a4bd2aaa. 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/GXD7G2221949.