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 0x6c89ff155078111d5f29e30f8f84680f46b9484fa086936e7f5aecae5b421ed2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a9b7039-ea0a-4708-8e73-f8c1d15ab06b.json and https://artists.proofprofile.net/proofs/artist/1a9b7039-ea0a-4708-8e73-f8c1d15ab06b.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 0xe1d94a27f1d78518be2834037eb62ef09353ffff65e237c1686d666eadc54ee6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:03:12Z), 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/DEOZ11900155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea1902f9b7ff257521eafff1e3a45b6835ec8c260a1f40a748e028188722554. 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/DEOZ11900156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b8551954eaf4e31b20618d7528299f96ec44fd4dfdfcc7d26a5022033eaa7d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEOZ11400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2940f4317b80aaac30f089aadc011a2a0ad6a460a191b1bccb11daaf2db99572. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEOZ11400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71ec105e4aa5ed1c1a51fb38d3bb45fe8f1bd8a400a7d915cfa6df3a3d4ef0c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:23:45Z), 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/DEOZ11400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b1f1dc5d428eae584f304537587b43ba638b66e53fc5f5222cdf477e0aae5e. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/DEOZ11700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2e4334204cfd5c71078c14d262cc4a094deea2232b22cd0ff66e504179a61a. 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/DEOZ11700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66692dd5c86db4767d578e4881bddce98034e6fc70c5d2b7d91910c845938ee. 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/DEOZ11700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0c3f6ef168f88b1e0f77188f42f1a5726d30eca755d0d99883a6acd2ac9108. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:01:17Z), 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/DEOZ11900160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf792e51345a1d62ff9325054b82b97c353746abbefbba93e0d00a50180094484. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEOZ11900170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c06e1ef3e3125a570dee19c9eda57dcd5d44cb47b495cbce9f501dcbe75eb1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEOZ11900248.