1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x1ca6e1caa541178f0eb7ad4e9f681d4ac0fbb46326881cc751fa11d097b781cc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5afc8b8b-b067-449b-8a39-858c6104dbc6.json and https://artists.proofprofile.net/proofs/artist/5afc8b8b-b067-449b-8a39-858c6104dbc6.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x3e693fc7a5d0af28cf07c84c4808fa47da713b049819984a62a1eecb499e12d3. 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/FRX762402091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bab7f95647b9e26738bbb893725680b2c33856fb0ec6d67fd62421513a3b14. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRX762402092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fac8ee17392c866b192739e81e5ce6177aa67f69663f8311c0febad1d856d60. 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/FRX762402093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5e2dc3ccafc48c4eeb858ff17f6c9b4e3b60bf8f0136a13bf0b81e6838a811. 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/FRX762402094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c24a72b4f8138183d9ec42c56dcf64b914327058f55ac2194a14a5fb3505c5. 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/FRX762402095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c69b12523c89aaeb8e99ec58e7a2f0fcd218d6dec8603fe37e11007bb6b915. 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/FRX762402096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c3c342b2dfa709af9cbe6427050cdb63fc50b228411ebcc00fb602432b3a6d. 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/FRX762402097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4868fd11ed197a165f004648ba4fc1ed66dcbeea9413020387c52a9c2d461c1c. 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/FRX762402098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5b7079c5c2afbf92ba99f192a67678069320550b070f722f133a60abd88241. 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/FRX762402099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faba62d364048434dd74a79fd9e151b8b5d6c48660ae7d205d6dd2e197e4d3a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX762402100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035354c3b45b65eb457ea53d48be4df3345d2d6f117a63992b338202949ecae4. 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/FRX762402101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91cc89806b3cc1fc7ad859164bb60bf6c53775e36c3c7be2628ddcbb893e543. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX762402102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd9b0c201ae90a6948e1b5d5a075455662f1508fc7761ecf4d2a762edc793dc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX762402103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe684f48c6126c5d5492136ff6b523a3cc7488e29e34f69893790cd70329112d1. 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/FRX762402104.