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 0x116a98057a56aa8e409e7881879983463c693136cbe33aa224887e63cac648b0. 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/97840a0c-dabf-4f51-8404-4cd6dec33601.json and https://artists.proofprofile.net/proofs/artist/97840a0c-dabf-4f51-8404-4cd6dec33601.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 0xe090bf0f70a0aacbb6c7775376d3ce75f2f085d7bdc2460035774c47542459ad. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DE1O62477542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba0832265a6b77ff965ce7d5803c4707533cd0b55670c79323ec943a3041a37. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DE1O62477433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3a0cb681638d0f907062ecb43eb2496cb719d9bcf312d48cf2b0099c54e895. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DE1O62477202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86eca815f8ac6ea9719d8f16fcab9df2ca8e6d0ad413857c7f719731e4dea90. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DE1O62477266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77a8a4e68aa7561bff834ab7b7d31ab5dada2766a7b573e21dcecf273acb96f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DE1O62477445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37d5664200b57d345422e70d22b901cd28a3938a47543f12d81da92e2c389ed. 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/DE1O62477545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4369b01b957a51af79e7a4023510611db60622ecc8ccaefeccd3c65f15ae02db. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DE1O62477352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6119a6d910902282d3d8242e87357495576c0cfd3610837a5389dca9d822f142. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLPF2502370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e95f11fd9a68b8907133967216a14672784944c1e9ad545a1cc9dd0f0035df7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLPF2502371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa217bad44668131d7e9481a3210ed1a0611509ebc14d855fd2205a06e00ee062. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLPF2502373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc198a85d0d72ea196b52dec58f7386f8c6892c8157ef9985523853308789ece2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLPF2502375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6fdc1ae476fd88d50ee81bbfafcb545dce95f725e0f65c3f86ac3aaa7845a5. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBLPF2502376.