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 0x95a20efb11ebf364a65ee66a64d571b2c36985ebc26b90f389f64fe4bfdedebf. 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/1ac50e2b-c24d-4034-9779-44812b5155ff.json and https://artists.proofprofile.net/proofs/artist/1ac50e2b-c24d-4034-9779-44812b5155ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Somebody's Girl (Take It Off) [feat. K Camp]
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 0x098076892f1f1ff4188c6d3591575de037ad8d757b8678b6227772b7287957dc. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:09:59Z), 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/TCACA1434441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68a85598f7d8c56de529080fe4549cec5103d9056c64dec72f5ee52ad86f491. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USUYG1214993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03048defa4ee7d0f353885a001fd5030f59aea87aa48388a52b3d4862f156ef0. 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/USUYG1214997.
Dont Be Doing Shit (feat. Mez & Pap Chanel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a199c924797237bf25dba744ba7645d756e1102af38890ef93fc408cdc32b6. 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/QZ2UA1700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469f3fb9244cead25376aeccbe93c5016a69aa102b32c063ef90350d0a50fa76. 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/QZ2UA1700128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6130cbb04fe0646fc65863178531497f288f9d062b4f3f86a0c11f818f922c. 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/TCADL1862838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61708e6f944e269c228e55b517b1603233267aed7b71c541bcd2ffdfe1d107ac. 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/QZ2UA1600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743a21cc8c50359d31670a034599372d68dcb9f8ba0483b35899ded70a74d95d. 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/QZ2UA1600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f159791b6b8355317ddc09b0342e171b575968599876d91c20fd9ed3f9082f1. 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/QZ2UA1600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb438d34fafa0671360db4e2f1863129260178d7529ecff3b004253d07f8f0236. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:53:42Z), 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/QZ2UA1700104.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff2c96a72bb2c46f7724c301540e24862ee938a09210bb50e11f08fbee94629. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TCAEP1909942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bc731dbb1f3aa3948a805dc9eb376a26982e5bfd323c697ac5a2c8abd7a8a0. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZ2UA1700118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2764743a0e001fb163be2a67cc12a2a31fc41c453ede8a1182156551841d9c98. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZ2UA1700120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb45e54ec54521ab32bb848be695ad4fc113aacbec8e7833581a9ec7d8da1b6e. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USAE81600558.