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 0xe9bd228f52f90e2c829ee70697a0e1cdc5d479b816e38ed1b385ffcae89a5ff6. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94447a86-e9ee-4056-836e-bac50027675f.json and https://artists.proofprofile.net/proofs/artist/94447a86-e9ee-4056-836e-bac50027675f.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 0xd8786fd874a74f53db0d46773da30d9cef4aca4af00142a0de76aadff742a55b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUGBT2409096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb788624458dedc8509047bdf0e987ef5a9d940a2250faccca8e06bcfca89d7c6. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/AUGBT2409062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa838783f323e680245c7492ffab1e81b05b4d144580ed3096973002c74f2f9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:06:00Z), 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/AUGBT2411533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd4e4e649ac45de5143b814d12121abfa91948111d5dd671224fe92cceb2103. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUGBT2410226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01347cf2cc3a6d984041be2bd08a3d2cdac5bf0efc89498fae2ddf876e040954. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUGBT2411532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06902058d017d93152214d315abe486fb7053e1b2ae20b7ce5392f3f527f8ab6. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUGBT2411526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcbd172b3083892923893e5fa6b65e858c8275fd378622c27b0c66dd941055b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUGBT2410284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62baf1ca991cf01e90a5fc5598d0960445d37b838cfdc74aacd175b1699c799. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:29:06Z), 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/AUGBT2411531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc8e45e6482e45ccb1b86a7a61a42933230f0c1c25265504f100469a7159143. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUGBT2411529.