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 0xe60351a373d3c8c8ab6136d51f5d5d5e17ff144e0d5e42e0dc1866eb8bd94401. 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/afc3b532-eab9-46c8-993a-cbbfa4063912.json and https://artists.proofprofile.net/proofs/artist/afc3b532-eab9-46c8-993a-cbbfa4063912.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 0x34516e997ca2a0730b0d1c4d3dcb085a850141146617ac8fc85eb1b7b8a57c6a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USCGH2235063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b2d6409baf72f1fa511b66c7ae73d574aa06db9af711d966a32f737580955d. 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/USCGH2244434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edc3579ef26fde1e46e747cdbfab2b1e81242f159ebf0cbd1caf4e6fd8c7863. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/USCGH2244435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44137303d0292c1d56ce0f939f3cea3c42a897aad627a4172d8b22746c1672c4. 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/USCGH2244436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e951dd27b931aa2b03de020aa4601b50023d8d1adc892740981c4efad631638. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USCGH2244437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64898804dd7f5002324e0e7e36e290c58804625b482878001c296236d41bb071. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:15:03Z), 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/USCGH2244438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c001dd200cbee09151b05858c137ba8292da7794330632b3ee5e4ab5972a96. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:15Z), 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/USCGH2244439.
Drinking Never Hurt (To Heal a Broken Heart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe959baf6ea40e2ae3e656a7ca498b5696d1b3ab66236a82c9f38bda4fa265af. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:01Z), 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/USCGH2244440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18668aebb7cdda46ee0614df7c70269e1666fd7f3e1c653d7367b3b62a9615d0. 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/USCGH2244441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da26506097e018bfa8649eb94abdf2783d0263d9a515ffe9a1355e6bdf56b78. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:27Z), 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/USCGH2244442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eee2e44d3b9ea6976e43e94a6ab4971c23e9227bc8a8df0a87414372c3c3419. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USCGH2244443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9b6ce0092275554a0c1e870fb65f40654aa0b045cdc801e03d91426801972f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USCGH2244444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e951dd27b931aa2b03de020aa4601b50023d8d1adc892740981c4efad631638. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USCGH2244437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e951dd27b931aa2b03de020aa4601b50023d8d1adc892740981c4efad631638. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH2244437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9bbeb2ecb64dc7498841709650b60043a7d201e1678dcf8c4f109126926a98. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGJ2303067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf41725a16b578c3739a5a066d4e3c5fcc91ccb6a4444d9ec6d1a4248b97aaa5. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USCGJ2303068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe84163b78cef7a1ca1c4a59f421369be6984db11e696be69d91082853ec35b6. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USCGJ2303071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbcc1a808929de6141f1857bc49fafe17bcf054ebdfe475b7711e6140e061cb. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/USCGJ2303072.