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 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 0x871f2752ac774a0414972ac5a7186863a92e4cfae553865871046f859d6312f9. 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/4dfda064-32ba-4f74-85b4-f1bff1e50d94.json and https://artists.proofprofile.net/proofs/artist/4dfda064-32ba-4f74-85b4-f1bff1e50d94.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 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 0x716a6757513ce023df4b046795a39381f5ac0224ab57192befece31d79423cf3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USXQS1303340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581d9b0ef82cf58a96f559995072fc788f1bd251e49c58c4d0bbf5f5cff5a11e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USXQS1303341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07eaf4454b3f77f94afa3b53114ea95b4136486a84e8352e606c9ecb6e514e7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USXQS1303342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d302b328069ea96fdae745ea919a1eebb0b71b0499ea76e0a14201e05aa87e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USXQS1303343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4982191b33621883f239ec86c002685bbab1e10779bcb782e09e4323748e7972. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USXQS1303344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd498cdb0f0fc523d3a74c60cb80eaf31833b7412c1091cc747357a47891d30a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USXQS1303345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29a4587343a94d96e98a867ee3957453b3c5c2a7edcdb7f9d89766b9590340e. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USXQS1303346.
It's On Now (feat. Dangerous P & Lil' Flex)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc6b09d1ea90a20618305d909ea1d5c1ca96f5a4276648571f9a057d0bc509a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USXQS1303348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2faf67974ac8019d07e39473d7c4103b280a875e5d6cce6aa21ba08a5d2f4e0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USXQS1303349.
Where My Dogs At (feat. ZRo, Jane Flame & Mr. 3-2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195e1162711153d54aeca310ccdb21db1d09571dcb813b5216110a74fb2ca03e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USXQS1303352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe43036c7537f58eb97201d8a3d480a8655fe6b97c17804beba7b2074bd7aaa9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USXQS1303353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89e5ddb6ee603e23fc8bd45f4d02a26bd546c6e20939aeed00f2483bcb0197c. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USXQS1303401.
Never Been a Hater (feat. The Last Mr. Bigg & Rellik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7fc79025c10a102fb1ebd320bdbd582ebbbe0b7d39209b90ce970e25827847. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USXQS1303382.
Roses (feat. Lakeith Rashad) [Clean Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcba3c3e9b15434beadf6b89278e40be0e3690f1bf059a8dd5ba39c3107acb3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUYG1326403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330fecba2fd888cce9194ce65d18e60d5a96bf3ab46de69a6531d458f817a173. 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/USQY50911188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dea988405ace34d9c7f8e330c9173c081a45f729f85c48b6e1156973c35edc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USQY50916403.