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 0xfabb6471dd896d52c70ea011be56729d734a10781c94ad16960255fc1884ecdc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eda1dde7-2f45-4263-ae5e-0396ad27b5f3.json and https://artists.proofprofile.net/proofs/artist/eda1dde7-2f45-4263-ae5e-0396ad27b5f3.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 0xafeee337c6e69e5e72cfc2a569863a63a702f6a830a976b8b38673c4353b91ae. 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/QZNWV2347083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6162b82385f554071a73bf9f65eeea7ed26532424ef415f881a2ae93cb32b0d. 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/QZFYX2490733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f362f8d48351abface90950803bc55db54f898f54361514ed035c3ce20aadd. 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/QZPLS2208631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c166b546400ba0e913a0e39ab46e07aa1933ea0f173c49d1fc08a4ab03d8afa. 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/QZMER2188113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c0f12d06ab7c496985ca0ec70f44e6386ef0ecb367d7b99e54d3f53b5193fe. 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/QZNWR2106717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96a1f70541a032c3df47fd057f9233e2db0d3e107842a1740bb1651418812b5. 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/QZNWX2178190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850f706bd465dabb4eea5bfd1a1cef2159012ea758971bf92e6d54c3c78495df. 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/QZPLR2104251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ae3cae3a91ad55ae92ecb557aeede18e216c426e30d04128be14227fcea448. 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/QZRP42180879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cee78801f4947c4f1cb34c39333cf477a9ea9aa3eaad66a09e4f842f7f68c2. 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/QZFZ62180353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991f3ae65f6a74fd2d0cff3254dab229fecb6198009939b1610d312b26c472f1. 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/QZHN72174967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a729a64884dd5dd923ddb5ba12cff1ef29e3d43256b5df3bb4acf9a7ccb0dc9. 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/TCACZ1769539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ea051b65c471a27cf218b89ac90431bd61aba440df053af23efa0256edbd1c. 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/TCACZ1769554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63ac4022a3e66f2848b9cd176a630a069af42740f2d07ab87d0cfd6e1c1ec51. 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/TCACE1524873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe495dfc2b579d3e7186a87554aa71a640e6bb9fca9b47902b4d2473cb0dc2ac. 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/TCACE1524885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1ce169f01f692bbc0082496e791db9c657ce18981181e24270510a6d139586. 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/TCACE1524889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347979cfd6f9881e9bcf4c1636049b2dc0a11c873d25642bceea07fc6bcc559a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCACE1524892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea35f2d8d2023b300c9c885d2b8cf22743cbd8015c1cde56526710f9fc988892. 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/TCACE1524905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe9fcb04ac6899f47f81439c8d29f6c6de3642cfd351bc65d1ed61d60ce6549. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZFZ32482387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72897f186b52d6236e8288aa8679d2a9987acc2a7565a24d9a61c9f681fcc770. 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/QZTB72312559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7a50b1a94fd864f9997d60cce89288885597d1bcedce7f42c43c764f77bd72. 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/QZTB52363469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645a52848578f3e88608b3da67d0375eaeaa83d548f51b6c3dbeb41ca57112c8. 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/QZHNC2374896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f362f8d48351abface90950803bc55db54f898f54361514ed035c3ce20aadd. 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/QZPLS2208631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ae3cae3a91ad55ae92ecb557aeede18e216c426e30d04128be14227fcea448. 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/QZRP42180879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c166b546400ba0e913a0e39ab46e07aa1933ea0f173c49d1fc08a4ab03d8afa. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZMER2188113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0982d879235b0f6ad9e4f389c991ca7bfac351408c1e62c420ffd06db2beb9f. 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/QZK6L2180629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991f3ae65f6a74fd2d0cff3254dab229fecb6198009939b1610d312b26c472f1. 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/QZHN72174967.