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 0x9a6f27dd121d44105d4e21b710766ef783e944f44bc8b1aca987f75254f058d4. 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/15c9807d-f325-4498-ad43-5f98d2940e06.json and https://artists.proofprofile.net/proofs/artist/15c9807d-f325-4498-ad43-5f98d2940e06.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Caixa De Música Bebê Bailarina Duérmete Niño
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 0x0e2873d954a49f57a5d69358dfeff36138d09bf514c4ead8acc4ccbe5d1907da. 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/NLGM11807971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fcfb4bdb89c91eb24daaf101716e041fa3968ea2aa516d5115ee706fc1d3ba. 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/NLGM11807972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f17a82c31f18b66326133298aa7bd7199bb72fd43032aae8bffbe32f9e90776. 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/NLGM11807973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acc34a5f217623163b56fc51bb6e113b0f54321e842b6779d48400510e6daa2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:50Z), 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/NLGM11807977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eda86f34fe027cdfe6a8c9ad8ee2a3c1fddea3f8256c2e053ea16716293ee8. 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/NLGM11813180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873945c83eb3197f3f44e9522d29bff8646e55d9a7d8c0be9dbd2b94bc007c44. 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/NLGM11813182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a8ba512b30b99c2c771faa5840343daeebc70f0ffbc883fbe2a99ffcfa02f3. 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/NLGM11813183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3571d00d42ef16bca79d4788ba3374174365a67431cb8d8212bb88d427ba622. 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/NLGM11813184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0109ac28912711f312aaeec0c43b3de420ba3e13a52c6f2656d90df7b00a8532. 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/NL6VJ2400321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847e3916b765bd3e7425738a46b8d5d3ffd627e9e70ad5abe20737dace23ef01. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NL6VJ2400323.