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 0xf57ef0523ffa719182726b44113abe24facdfd10bf9aa679107cd86216a4d7c2. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdcb7126-132a-4301-9eb9-688ac15c78ca.json and https://artists.proofprofile.net/proofs/artist/fdcb7126-132a-4301-9eb9-688ac15c78ca.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 0x9dd7d9fddd9ba3fb204f955985b160707db03f49e992472b9e9e082f6fac440e. 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/GX3Q92198918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8db4553f7a6bd7882d7940e5c503353d0b09415cd76a8f1f13b0a0d69b4f604. 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/GX3Q92198920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848cb57d188b89fa6a31ae005aeeca0e0bbec29e10e4a8b3fea0b0a24babec40. 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/GX3Q92198917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08d2e9013c645c01ff83d55dcdbb5e9a4ad05c617bf0f24ff637c2d5ee768ed. 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/GX3Q92198919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713d73f199eeaf0b0efe094f84a5c37fb75e006c6fbfbe17b9cef299e8c99454. 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/QZTBB2215532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fba446a5ab3760862450d6af63029b23a57a8b00cd3318b835da716a60bf5e. 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/QZTBB2215533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf750349af3ac6ee5d9a14d65a7ba06876676260cb02863b7994510673052716. 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/QZTBB2215537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d8b8cb00de1f8eb0e9a2ac7794bb4412be155f9f1e79ec243c0d4589f524bf. 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/QZTBB2215544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900564ee82661a5ffd28edc3ee8ce8d83d1a08eeb291bb13c4c8eb8102361b60. 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/QZTBB2215545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d0bf70cb61bff3679048f449c7588a606bdd0e49d719ec84ce00833458ae3e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTB72349288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ee04bf78b7977c1f322e980341d68e03762bfaa0e1101d4fa25d87bafdea05. 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/GBMA22305014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1cd1d6189f305914c1c13cc9684c2f9c372b11a9db492874a02c97fa925497. 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/GBMA22305016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb1cfc2503bb6d82f8742523ebc05b9238c2ac442e52039919d1423229831db. 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/UKXN22215644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed85029563a9ca8dff432a57b7959e60bfd3ab534dd4b269466154551665fc3b. 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/GBMA22305007.