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 0x08f4f22477b514e0f5f5010925ca9ef7dc5e11a55b0f1e3f40b6bbb7be468a99. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69739159-99e2-477b-8ee9-ffe26de05ee1.json and https://artists.proofprofile.net/proofs/artist/69739159-99e2-477b-8ee9-ffe26de05ee1.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 0xf6c1944b65e0b40b50e8a692a1047c46621a4ed2f0b681cc860fd1b9f7a3669b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBARL7300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c1944b65e0b40b50e8a692a1047c46621a4ed2f0b681cc860fd1b9f7a3669b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBARL7300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7c41e2ece0910f2e1b10d0581b5c0251c82dc5c3465dbfda4e4a39326eab2b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBARL7100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4916363d1b4600f60d32aaf3cfec3307b15e8cf54747aa98d18ed6013f03247a. 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/GBARL7300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4252544f0b0ce07c10ffe5217e4004b7eabb5e49a3ef9a287b30a64d93630ed0. 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/USCA28900567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d1a29cb61fa6ed4daa3f22cec706a23c49632f62901d673ed056c93b333144. 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/USA371028464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4916363d1b4600f60d32aaf3cfec3307b15e8cf54747aa98d18ed6013f03247a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBARL7300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4916363d1b4600f60d32aaf3cfec3307b15e8cf54747aa98d18ed6013f03247a. 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/GBARL7300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa2b166e5cf510c7c9b11647926265daa3fa02f1c73c64a2f2771ab3b2fa6a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBARL7200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2910c518b89c888b0f14431d48b744693a810c18d098f20b7ec720dad65ed1a. 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/USA560748936.