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 0xe173b52357d62583b8ae52f117d58ceb4f3482f2ad0ce8990a8488508bd46464. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f76d9d5d-ca20-4c79-91ea-8319a35347dd.json and https://artists.proofprofile.net/proofs/artist/f76d9d5d-ca20-4c79-91ea-8319a35347dd.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 0x579c60e8d1855bc5b9746f5581c56675fe476faa2354f3aba61160325edfd08f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBSMU4934426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4930421489d4a4fd10f281ed37f52331aaa51c1fcd35842a64f2eed7b2b51671. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBSMU4767661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b6169c9c44ac051ce84981478b8b2f8abe270a76a43565789d95dd0db3e39b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBSMU4767663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dd3e2f19409ce09af0122a85096aab7f7c720bae0ba16e98d8694af6b6b1aa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBSMU4767664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae47f4027c8d62cef3c943b4a1ae4ad021b526fde9825feff3cc316cfab6df2. 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/GBSMU4767665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20306e66f01fe30bc11cbcd7687c9a740a8856df3647a6fb05de33536d78b7ce. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBSMU4767666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9b41f2bdefc01b9432d871654cfc2c79fe1b3c8f462a64a8473e917c51da60. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBSMU5136434.
Living by The Proof (10 Years Anniversary Live Concert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30db0d4317f11f5bbe8c24f86d342a6a10c66c875a323bafafb9f17623ccc4bc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ52026838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365f09ff8ac86e3f2e5910eb4a2f54f8a8795723226fab628fd6317212738698. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:25:37Z), 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/QZDA62050964.