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 0x07e38ddb1cd39cda7798698b89b140d68f5561768de2188895150a560597b657. 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/70e3d4fe-adaa-4f7e-99c3-4ebacc48c170.json and https://artists.proofprofile.net/proofs/artist/70e3d4fe-adaa-4f7e-99c3-4ebacc48c170.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 0x3055de2b935a173e642ca277c680facfb3c51c94107f410a20da22e049f3f1a3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR96X1945474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf0548b72552961643a1d2e132f4e081a148e66fcaee54be5f4b704055d608c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:03:07Z), 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/FR96X1945475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979f7fbb4e26a148b293a42cd66946a3499d761f6c3152a6c080eb18f7960ff6. 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/FR96X1945485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32e00c210c8c6f8a5fabb018dac606b8c5cdd3244d06b8aea11bfa6d8a6e778. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:32:56Z), 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/FR96X1947777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7280aa1d02b6a932da5b9f40e289f409a07b5c61e06baf0fa9a3bdbc2ede18c5. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/FRX281945026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb4a6c8865949f8928cef0c1ad90a3a5c4fb061b5a02049b0868317bd9bb14f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/FRS182072638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe568b62dd1134c5de8ce09e710245005e0a81062ad29d4759bff792ec27e51ba. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:32:04Z), 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/FR26V2043995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6ba1713894b8e4ea6f7769aa4dac054af96a8049ed337c21ddae4db9d73180. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/TR4852200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24864b8b3ef0357d69658650d00f24d1d167585e918571d4a612a8c1c20b54c4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRX452368954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bed2997152622017ed962338718d02d2838060b5f6e1b3a4628f0f4fd0c8214. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA062371068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf679689c6bff2c8c6064e907f492bed498ff9b1b38a5e931489aac0fffede0. 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/TR0650701241.