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 0xf702d3b82fb24ac39a2dffa34086c4e78ec9ac380ed295471a73c1674e3c2c9b. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e95f8f8b-5857-4190-aa0a-38a06f84e690.json and https://artists.proofprofile.net/proofs/artist/e95f8f8b-5857-4190-aa0a-38a06f84e690.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 0xbe39496e27f04092d59fdfe5d8c0deb94fc1ae7ee1cbff3c996b6c29e2a36741. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZWFE2312491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82975f49bc6270d7bbe0b9430bca56dc68c9e9cac3c6f125edd2d01e12b6d1ba. 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/QZWFF2369737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcf1c2c525e536fef330e45779a70e52ce48a413b679a8f0a33a14c1cef1f31. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QZK6K2442348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b68ea7ae7bee06a23a5746f19564a004e409cc61f367dc27adb2b4994c31ab. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZK6H2470121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3b29c7fc916e8263ea2b26d695179a792a717f1220e366285bd2019cd406b4. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZMEM2427122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9036b1d304af284e08f97e3c492f3da55cd1ee22255c43eb18dc1028717abf28. 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/QZMEQ2408103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986e7a019f2fda60fd07ecb90b2317f9881edea23e5a8eb44ab1ee62338b1de8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWY2425384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07561c85b1218cbf885de51439b86812dfa9902163698e96afc97924c84f9cb. 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/QZWFQ2478887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ffe3856d933c5de535bc6481e647be0fbdfb2a06301688db6a0e67de4d69c2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZMEM2550468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc8141e2f466ab3f57b9f8f936908858eac50db1b26eec2c5311d4e827dc4ac. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:00:20Z), 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/QZES82580458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8ae6c1cb435de1ee0eac8ba4e04ece4a0d011a988c76df52de65cf98629bce. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFJ2476284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f0d14b7bef97f369fa52b2f91d66d04bbfc3004e2c215010b67680043b7a71. 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/QZES92569452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ffe3856d933c5de535bc6481e647be0fbdfb2a06301688db6a0e67de4d69c2. 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/QZMEM2550468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50e3e5d122e28ef79f245951b03e2d466456ca94666918709888fe345c1bf3c. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZNWU2501136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd165353267cec4cd518a4df136c3caf2cccc22c8cb334def6ff69fe70ad2b4cf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZWFJ2476286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd27ed5f27c65aea3ac9c1e9a17bb60ddb14fd10956190342ecb59f21d7d47f. 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/QZTB42524840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21faf2b8261928691fa3520dc8b570ef272b0ea0730003524a4398d4cc3990f0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTBD2561114.