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 0x789e385e4eb709a1624b5245e0dd68aa54e0cdb4b5d151db06ddc0181be697dc. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad906e06-9d01-4317-8700-6de85facf5cf.json and https://artists.proofprofile.net/proofs/artist/ad906e06-9d01-4317-8700-6de85facf5cf.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 0x923f702d85d4822c86b08dc9da89749416f5fed0dc2979758e6bdbc80d0a94fe. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:34:55Z), 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/FR59R2203613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d104199cf1897620ccf3c0fe780f9a4b7c6bdc4753e91ea783dad91d76a9c5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:40Z), 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/FRX282261743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a40faa4502c6ded59d360e2ab29530f90884301487d2b4d2b78270ca2a80a99. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:54:59Z), 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/FRX282252285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6faa3ee09010f6b2cd7c54ace0c5a369ec49d8db47517afff34f94e61b8b2ee. 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/DGA082239622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc89f61eb2751d7f1188c9cc163bf85e45aee5c18c51d80e75f5a7f516f89ef. 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/IDA832117369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3defd1d45c96d7ae0ba9bbdcc278a289a5dc3775c354c90eb676b566e74bad0d. 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/IDA832302576.