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 0xbde9154f6f5ee1d2b5be02d2328ee7654f43657130aee6688ddda6d4b64149d2. 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/f4a6c215-70dd-472f-b80f-1a94d2780eaa.json and https://artists.proofprofile.net/proofs/artist/f4a6c215-70dd-472f-b80f-1a94d2780eaa.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 0x5c25c191bdb9c8caca46bd4a7d54dae1c711204a7650fb1da2176f324accf65f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DECE72202509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc13ba03ac65d7c42b0687a294d252f8988e62a4ead3f1f1103078201cf1c9f8. 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/DECE72202325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc241db5dd75e5bc8848b8ebdae0145d0afdc33f8410c3b22bac1f7b3db1a2ac3. 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/DECE72202487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9527118a325f07656fa137ff04cc888838aa4cbf8dc54f3973f509681dad2ae. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DECE72203597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad7a1e99cb087b1b4c429c5ec72b30331ef4a172379feeb2a6df0f740080964. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECE72203255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe217dfd1d9e7ceb029d32adb7312cec930cdd969ae76ccbd0ad730ae37ae7de6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DECE72203650.
CATCH YOUR BABY MOMMA (feat. Camaeleon, Koushino, YY)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d79326769e9890d01aaac301ff9f502ae88105c720ca503852fcc8591863e1b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DECE72202428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f4b4115a908299864c7f4d600c4e67d11f39329ba394a6f37897dc8f753a93. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DECE72203168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37425270880eb4eb09ab608eb7f8a8cb7754acb1e0475fa0127dd0e8bc7be085. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DECE72201868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7b758efd013dd76d73efd37da2462162c7539abb8d56fe75b74c164a1500ca. 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/DECE72203651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad7a1e99cb087b1b4c429c5ec72b30331ef4a172379feeb2a6df0f740080964. 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/DECE72203255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c25c191bdb9c8caca46bd4a7d54dae1c711204a7650fb1da2176f324accf65f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DECE72202509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc241db5dd75e5bc8848b8ebdae0145d0afdc33f8410c3b22bac1f7b3db1a2ac3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DECE72202487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d79326769e9890d01aaac301ff9f502ae88105c720ca503852fcc8591863e1b. 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/DECE72202428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc13ba03ac65d7c42b0687a294d252f8988e62a4ead3f1f1103078201cf1c9f8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DECE72202325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37425270880eb4eb09ab608eb7f8a8cb7754acb1e0475fa0127dd0e8bc7be085. 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/DECE72201868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd421cf290680ceb55f10bda3fdb134b51318bb5fa87cf9d33377683ccbc51102. 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/DECE72203610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bac88fa930b8ee75f846444fa8d307b2c5881eca6160c858ac4388a7ac73e50. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DECE72301969.