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 0x92cbde59aef9b8cd01cf95828b1ef3e6ab6d93ac9a139eac9672606f26af5493. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3259422-abb4-4b48-90df-cde89fd65fb2.json and https://artists.proofprofile.net/proofs/artist/f3259422-abb4-4b48-90df-cde89fd65fb2.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 0xe03cf66b67ced922c5966d5e159f2ff010c68e5ed8107145ac2ef23fc9a43d25. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:55:58Z), 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/FR9W12209684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f904f04032b2122c612671fa61608b8e552a213a29c7ecd17f6515d5ae8a8d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:28Z), 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/FR9W12213822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4140e006f9f27b0be772ae6081e3b802046b76810685026cbd9f9058b32b485. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR9W12209685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6ac3e47724a5a77c4c9d72ca34743941ca8408368b89d0c470955d528b357b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:54Z), 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/FR9W12239166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c1795b2d052c9ca6a6be5a6fc2696e40408a057748faa2c8082864cf616ee5. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FRZ042300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356befdc824010753dfb7a6657ad1dcc5e24d639c4577939bca1f036705bd023. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/FRZ042300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fda42405773e60d4da631ab0cf01921099bad759fdbd53d0876c207e0cc5fc7. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FRZ042300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35505d9c31f30f947bf08c67c7733bf28691516a23b7761ea83e422bb0e25314. 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/FRZ042300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e7e0e81f4f1c72814a812808d590d4d2c4ed4b9ff053a2fc7829eecf731306. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRZ042300366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071ade448a6322237ee5216ecc1502e373ce5377671278e79c3317356d679532. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FRZ042400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ee8125405154973625221cd45a71ee74acb782b8ca869962f31e317c2a88f4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:04:47Z), 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/FRZ042400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff2af597596c870f524f8a2d41b6d4c412be6b6e0a99a457ea00460da5b5177. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FRZ042400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2b6b7dae41591b6ba9d4d9bfc6d8449c3b4b34a38ba254969a5cff53ee68f8. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR2X42552549.