1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xeea2511e81d8e73d788f166385c43f8c5c54e6889a0405ca6fa30946ff8c70f3. 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/df9a153a-1220-48a6-98f8-10ae12fba1be.json and https://artists.proofprofile.net/proofs/artist/df9a153a-1220-48a6-98f8-10ae12fba1be.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 → block OTSBitcoinBlock must exist at that height 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 0x87479e4c074dcdaa6d3ff4d5d955999353058d65f9a28305334dd8304ce60fa1. 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/QZCDK1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ee63bcfc3c857ba0013b4bfb2d36b73611dd1a2d2a28cf51b2cd13552b23d6. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZCDK1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0987f66fd689ef7fec142d69534a0199ae3a52692e47b1ff6124c1f95abfffcd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZCUZ1900167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5284d8468b35fdb61648398a0166dc2d4a81ca3d6531df029b26514d1f744c7e. 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/USHM22072784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719c77a638e7210c64d339dfb205472b3cb9704f3caf6bf02d454072d00ad115. 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/USL4R2169050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35b0a7d7d682aae3aa4dbf7c5dfd2ada0bffcb0c455efa953df568ccd5b513d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QM6N22235043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f05ea52c431d75abde004b9dc0ec7380404056807cb9b95ec8b37947cc8751. 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/QMBZ92298395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa3bdc409d934417199eac47adfd4dc035b4aef0bbfa0a8c80eb52e85372f2d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAGU2372301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434ae152dca2b8f4f52bce69443b2dd64e6951ad6b55c0a441227bd2d2868bab. 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/TCAGZ2335383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6986c95b9077cb238ca5df6fea14c92cbc2627cb740db054aab2c9b0c43fde9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAHE2315340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b8520e1a6647f51476a8eebe6e1fccee17d8bed7a3e916d359a3bc2dd24c95. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAIA2470958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ee5d5bd8424208b12206c7c2400c7a44452fbc28dcd95ea6fc07aba8ebde92. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAIK2458328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2800beff7130eaa443a11435928cf9d133b36e6b3563f2eb0e7239b9220ec28e. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TCAIL2458397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33179db6d517222dca955341b1fb86a599f6c790333c910353f5eeb131118340. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:50:27Z), 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/TCAIH2447099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b8520e1a6647f51476a8eebe6e1fccee17d8bed7a3e916d359a3bc2dd24c95. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAIA2470958.