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 0xba3be88e9088d8998f5bc21703cb2c480c508530a4bcb2d68068d327365a9252. 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/9cd031ff-c80a-49a1-a4b5-8e8797241232.json and https://artists.proofprofile.net/proofs/artist/9cd031ff-c80a-49a1-a4b5-8e8797241232.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 0xf218b09aa9a7b4f6ccb1469963b1ad7bcd9fc9d73a77f1537f38fd8c4d04d12d. 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/TCABN1351600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0538f2f8e63ec9ec6cc2367f242dd0fe8b011e9079458816544fdff03d1b11ec. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCABN1351610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d3cb0d5ff98b52a95c5cdbee842fa59a63f6f57d7085322699e07b45b235e3. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TCABN1351614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2b87e57ae495101bd9e02070183c634eff4198ff85eeb27a6523a6ec38be70. 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/TCABN1351619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc371758b4d41f6f68a96cd2fc6620e317ffbc60a53c26af8d33d268e3fb83ba1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:22Z), 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/USA6G1559001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49da0f59d4c29197cf09de7da825dac8808b63dfddd6fa619f937b30c58d441. 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/USA6G1559002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fdb15e7c68fd84169552033af29c44aa8e9822e69bd2eea314327e4a935044. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA6G1559006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b08a3f572b1c10ef5c5a19ea6424ccb89f1768df1a075536af1b24a9810ceb2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM4TW1716098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4ef589003e39bcc4500d9d9793dcb83f89e9c2d24fb9a59bcaa0c0dc35efcc. 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/USA6G1664604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55cbaadea8a3d869880c52663ee9d95435c5d873644db3efec96416d0972282. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA6G1664605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd852c919d00c6d5fcde730e4a379b38e3b1d02a2817bbf6ec0a8449fd4428be. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA6G1664607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cafd37b5516d94947d81b4259adf6d5fa896be71703c39e126069928987447. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USA6G1664609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a1a04b6adbf62e887979ff47c909020f124c4581026683a79fbdef778325d3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA2P1875578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0166c104de11c1d46f0f9f89bf911729536768f733b74c50eb575df39447394. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAFH2027873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbd104b419d8fa2a47c4d262b6dee11cca2d455aaf641b27e1d31a5cfc9ec65. 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/QM6N22279961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5bee038d1e766d9328a6cf6da03b2e54eb542bad3ba5961f0e96543eaabe65. 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/US2852215702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3931e23aa9fb8d964e5e03cb4a469104b4b7aec113e62cb60b9ca6028cdca06c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US2852215703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4002d3c6c4e883b406a5c928d55f3c2a07115da56439fb8d7eee7a3ccd858dfd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:05:24Z), 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/US2852215704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7199b62619c4d68fc9c20107eea5aecaec0b0c50385c86d44d6e20a13e6ffb6e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/US2852215708.