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 0x74e0b8dc5caedbb68df55499e51e38ceb25ffff11c7d98a8e563c8f6c0c2ba99. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5181ae51-d6bc-4256-9cd0-d845795302c9.json and https://artists.proofprofile.net/proofs/artist/5181ae51-d6bc-4256-9cd0-d845795302c9.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 0x4bed1c0ee2247be5744e9f275e35f64ab637d5033f7e296441d1af0de426586c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX872439487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e6ff5e54626f5a977c112e0f786165f8ccad8ecca37b69e19b9e469edbd500. 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/DGA0L2375578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab37cccdce81420bdfe3beb239c3a09f142fe5077ddbba40ca65217d6152c7c7. 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/QZJPM2479806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1036e46980b45941a35eeda08bda25e19349dd95cc2eb7018adc95e5cff17ad2. 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/DGA0M2435877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bac026f255a16c559f8faae0adfade301cd634560497fa000906b8b573f3d4. 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/DGA062449126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a3c0b54c50b99af3eeb5c7876ffaef0a2a0cd2a4a4af0c9c3403f53e444c2c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX452425089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce95bbe347c5d6848351847861db9d96b08882473c18c4663412b02061e3dc8. 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/DGA082358336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd20ac8387a7783961889b38764ca1a6a171f3a6104bf44ad3e78cf364ab23fe. 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/DGA052317527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0f4c4fdfe7af433acfce7d728472c952dcf0c5170fdfac8216d7c19d7a2795. 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/FRX872337232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe70fc81b66d7669d77739bdaae22f284a8582353f54e4a9e9d7e4d019c67706. 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/FRX872325122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47932c464a2409e4dcd66d009b9bd5ad774b867c0a7f9f9fbe5f1a5fb57220ae. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX282343235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23a0e73b99f499eca8d5683926bf78e7363141d35880b6fcb6398ccdadc5c9c. 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/HKG732267631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43aaeab4297f0a77badafb39d682911bb711155a779ccb2ed8e955fdcfe95077. 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/FRX452330495.