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 0x2f3218b42cd3dc529648431b6fa8d3a98d4c65fee716819647235737a2fcfeca. 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/cdb563fd-af76-4be5-81f3-e15d36a7dea2.json and https://artists.proofprofile.net/proofs/artist/cdb563fd-af76-4be5-81f3-e15d36a7dea2.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 0xde5fa1e572899308afaa410367494635c9093a151aa4260a371ea735bec4c578. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:18:05Z), 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/USL4Q2071305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05d82db15e8459cc86a17d805d49d77ec11fa28794dd701149a0cee6762173d. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/USDY42171184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0aeb6c062ce1250cc790270927c1800f0016cccf7e534a0fea17006d7c26e51. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/QM4TW2259324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed904adeb25183cc8cf58714bd299c391c41b5493980b56d8451f8a357c52da. 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/DEWG82300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c50701a22022ccb9204cea5893ecd7fe89ecaeab5630677e27c512ee221958. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:56:22Z), 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/DEWG82300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b7efbcc1155f8938faf92c92bafd2b8bbc9e12a2ba7c23be85c7d8e2197926. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/DEWG82300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46088ae16bd535f29d97bd08c229fd0667633af11a05d255bf164dbc37cd4ff4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DEWG82300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200520b3b0c1046921090afafe113e620e8bb6419e1759ce1f5246174c575836. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEWG82300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca56ae128a469ef4884980a924be14693a3c5e3c19c90a358fb9ff27e7540f2a. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:38:51Z), 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/DEWG82300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0440c3b5a3ca6f3a2eb86f32526132af8ff3c944d6a5e2231cf3fed377a890b. 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/DEWG82400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84b8f71a10518772da438bee2a13c2780b5bf050121152b3ba16fc015c07ace. 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/DEWG82400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbf279bd36f0160ad2f173d92ffeaeb6f1bffb0d351a1838138485f348c226d. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DEWG82400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed904adeb25183cc8cf58714bd299c391c41b5493980b56d8451f8a357c52da. 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/DEWG82300054.