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 0x31d008018986081763662a56560fae7451ef3e5bc7202a8aa4302bf22970a786. 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/cb4203bd-4427-4d95-b74f-745b2a813f29.json and https://artists.proofprofile.net/proofs/artist/cb4203bd-4427-4d95-b74f-745b2a813f29.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 0xbade1ee215f3d52b1ed8a47c25b94e10ab3bc64ae5ff1076d4fe831548c62fe3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ATR981257648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13308a5f3afb3dcc39b54106cdad7385341f8db9530e8406d49e925cc3a8e75a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ATR981257653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c55168153d805114d9ac999dd8800de5e259baff7fede3c8d14c81df7f2e4f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:44:17Z), 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/ATR981257658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfb2ded0f442afd3bf62daf69dd5a11ac31babe638a75183ecb25d179377ae4. Chain 2 (Bitcoin): anchored in block 957957 (2026-07-14T05:10:34Z), 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/ATR981256952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde62e4c4c33f047ed45da85838da4ee94f55c48c76fb68ee6d4edb4353f60555. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:16:20Z), 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/ATR981254317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b8823383d5369688e5377b5f496b1a8b1aee939e57da249989c9a8d6a58812. 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/ATR981294837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc936f7936a0756514d2f0817c6ce8047bda92bb3e72e1f856b16782e4ab80293. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ATR981296765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e82f181e39e9dfd9e4ee4cabdd37c06605e87dfccefe07d05ed4cd7cffb87a2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:09Z), 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/SGW502308276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8f8e298cae19a0254021a0c65a01722af6ec5180451beeae62dbcd47d6c99f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:58:28Z), 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/SGW502314522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267517da3b4f3603575ad98ab0a9010628ad93d638ea256a15ca59210fdec9ad. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/ATR981302226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a32b94a02cb00357c1581de14374fc64d26d9e05135aa937aae95a3edf405a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ATR981305165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89313993daebbb6247d3fa4b6676de5eda22191e95f48bdcf4f4cc5722997607. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:27:59Z), 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/ATR981314453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde688adf37064475948b9ae5ceb62b6110da7e00f9921cac3810ef572cd3ca01. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ATR981319108.