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 0xb9478003af593f2a52a59bd51c28bbb35198a693534b576787ee8e60ba5bb93d. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ae6a4c7-6130-42a8-9bda-cb5193fde1a4.json and https://artists.proofprofile.net/proofs/artist/9ae6a4c7-6130-42a8-9bda-cb5193fde1a4.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 0xdaa879175d2ae7ba191d1bd74bcb7bc4c5305bbba0cd50f6ec4f8402e50dfb27. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:51:49Z), 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/QZK6F2272588.
Don't Know What You Got (Till It's Gone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf2b394d179b852bc1309d56c746474aee6dd2c2beda6ec2595300da1ee3e9a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZMEM2235419.
Don't Let The Sky Fall On Me (Ken Tamplin)
Caught In The Wonder Of You (Ken Tamplin)
It's A Long Way To The Top If You Wanna Rock And Roll
It's A Long Way To The Top If You Wanna To Rock And Roll
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670d642cb829ab44e1b5b7ebcab0a345dc0ef5f743151f05b161000e43ff08f4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZPLS2420071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abd2744162ac3d1fee1006b573d008372b4c89a17c5c9f01934d836b04b68e3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZPLS2419955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7394cfe3faca14e6f12c2314ac3329d13c5f2cf275c352521cf5bc3ddf054507. 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/QT3F32417186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1d4adead8ec603354175661d4121e818e824a1a764d963e90c4106a66bf534. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:26:29Z), 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/QZDA72548932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f342d295ac42bfc475ab2140e38d50b44333f351b8f7897c0c00b1963a6179b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZHN42556602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137408ea9f01a152505e8d3604bd60fab15a849bee68c7a4e3818893ca2c701b. 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/QZK6H2535551.