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 0x09363abb1aa251ce7077068c3edd3d6858c3874c7182318a42d54160e2a2753c. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c18ac3f-70e0-4444-9bb7-167584c19dca.json and https://artists.proofprofile.net/proofs/artist/8c18ac3f-70e0-4444-9bb7-167584c19dca.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 0x3d6c73430af21af979b7bdf96c5ceb2bf0af14c4d238fd7c65cacc69a4325eaa. 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/SE5IB1702319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229969b5e30ad652505ecd19734e77b7f4b77a94f59ef762d8f76f281ab10996. 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/SE5IB2308222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1f07dc228a9024965e0ad75d3f2ac25c413381a0fd698143f9a636641ead25. 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/SE5IB2000986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8b45af8df4aa1673e92e1a10938cb7cdd45bd69383cd104ccc50c59e773636. 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/SE5IB1800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefbf92007e5b2f0881ce16095e2a43716e7c1b56fc764e55e9e18e12204ad95. 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/SE5IB1901471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dfaedc8d25efeb52c6676c06cf756c4778e9a7f2238522a200142c637f9e7b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE5IB2308219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c77e639e489ec0426637fb456767603a540067fb9b0082a1ba079b1ac9a0100. 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/SE5IB2308225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a0cdfd84342b4e16930f0ed17f0709443d75ecc162c2e7736bb21d1ee31c1f. 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/SE5IB1901464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd4e0ea70322f63d93586707a1cbf0328b4d9521260d66427b311eced772f2b. 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/SE5IB2301994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54edc87e84125f76fc6728730848eed710a2073ec11b912390411c6b35eb44ea. 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/SE5IB1900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982e3f5c07f5de4faec66b497edd37104d4a44147db8e74ca4ea047914a0cd49. 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/SE5IB1901461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93c5247fe546b75f6902a5e74008c7802c127825dcc9eee813f3aafb42d5174. 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/SE5IB1702350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd604dcce26543bc183c007c24b01d4b12425abcbbe320e7d71a333044e8f7fcd. 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/SE5IB2000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0cab59fd9c57da6d04f68c707ff710d4a407cea5ceefe10032984ba62e435c. 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/SE5IB2000286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47c598de0653826a252f0d2aeb4594df9d6158f73999ebff2568336d910edcf. 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/SE5IB2002225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85462d5a7697173b5ccddfd78d6cd8f75b5fc8e36532143e08f1debb10eb2ed. 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/SE5IB1702271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10042874e46bd6138227a09b0d7e2f44507d1ecdf71f294c072401ecd1bf331e. 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/SE5IB1702273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37529fde3ab8b75ba21d52b45c7bed13affe212b4bb8bee647404f80c239a3ad. 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/SE5IB1702275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb48451c429ab38ede709c0ce5fdb8af1a45cf8e8851b1efcf299312301b97c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5IB1702267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2af52557a7c6e5eb86c11aa2409c52930bfe27767ee916660b64fe4c5fa51c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5IB1702276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd680391af82d7904950c0c14875932b09b8f8004974e145242ebf27854540ecf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE5IB1702270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fa5b60adda322a769f525ba21c0ff7cbc05aab1a3db0b4e3caf423bf204329. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5IB1702264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d464c71f600eacff2dbccb84c902e4dcd5d0bfa52620129918a355f2c94a376. 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/SE5IB1702266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6cceca9560e129d368aeb4df2a768a468e61b4c59e90e53a5322ad89a8d4ba. 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/SE5IB1702265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c17f0bec78d5ff494b022a9fcb4d3f20c76e0466dcb53b4ed788c947787a537. 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/SE5IB1702279.