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 0x2692c54c0a34c22312f4a726fd12b16e021c984d8f8559302b74f9154d1da143. 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/e222ccb9-68e3-4129-a214-f231354c0d92.json and https://artists.proofprofile.net/proofs/artist/e222ccb9-68e3-4129-a214-f231354c0d92.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 0x4ef7d511364de4b144b41af5428437c8e35f83382fdfa817a01dd98a5d3270f8. 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/GBMEF2402537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bf83a509bc4a730247ee486ca575029af8de649773f0add803e4890c6258e1. 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/QZHN72342803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05969c1ce819d3cdb82b2edbeea86ec735c13f8670b7c03dfa6cff11d02f075. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZNWY2399559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ef65243b7c576e49cfad5a3344fb37a4f9e169236abba3801a30b3d801c9c7. 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/GBMEF2402510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4ed06f2b9e89c04b4b83fc04025ed6622785bad816c00a67a500ff14849d9b. 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/GBMEF2402511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14d0858de59bf447b69ccc98ec512e136d9ed243c1db2d671ef6095b12c308d. 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/GBMEF2402513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa2ae20aae585b3f2fd5a160090cb0a64c8ec046aeeea5dcf580b3830571732. 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/GBMEF2402514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f59601621df5834d56a452edd7aaf380e4ee3d60926dac628553d3e3af1ef1. 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/GBMEF2402515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14d0858de59bf447b69ccc98ec512e136d9ed243c1db2d671ef6095b12c308d. 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/GBMEF2402513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d2c3b4c27d3e427f0752f72fbb79fff374696833e0c4fe79ac6222285830a7. 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/GBMEF2402519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d2c3b4c27d3e427f0752f72fbb79fff374696833e0c4fe79ac6222285830a7. 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/GBMEF2402519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bf83a509bc4a730247ee486ca575029af8de649773f0add803e4890c6258e1. 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/QZHN72342803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4ed06f2b9e89c04b4b83fc04025ed6622785bad816c00a67a500ff14849d9b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBMEF2402511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05969c1ce819d3cdb82b2edbeea86ec735c13f8670b7c03dfa6cff11d02f075. 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/QZNWY2399559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bf83a509bc4a730247ee486ca575029af8de649773f0add803e4890c6258e1. 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/QZHN72342803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8e8a96a8527ccb528697e04959717612f4efadd369d6a3aa09087dbc85e36e. 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/GBMEF2402536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef7d511364de4b144b41af5428437c8e35f83382fdfa817a01dd98a5d3270f8. 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/GBMEF2402537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484d60b778071eb6613bedfa186a515b72b4a035ed1f599fd9c57ba55b7b4e4c. 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/GBMEF2402570.