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 0xfb81c565eefe87bef39bac2de57ae4913a5e8694b6ff750a8ded87dbd4f81328. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/643012f8-67e8-4ec3-bf77-6a1ebce5f0d0.json and https://artists.proofprofile.net/proofs/artist/643012f8-67e8-4ec3-bf77-6a1ebce5f0d0.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 0xdd5e25e13d393264eb2efe309853fb01facf663c98278cd5fb0089f0da35d22d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZ9731830003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca92e41d2bc32cb0e9c6739defd1c66075fac47856b11d985540af4d44e3858e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ9731830005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b41ea177b3bd400c3c9d7bfc3347a38778dc03676ba9a953417ebc2c1746e1c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ9731830019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2758bb1f1c44111530372a89b7109afc443de2faa2af0e1b3fd0e7c266ea659f. 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/QMRSZ1902822.
Silver Cowboy Boots (feat. Invisible Will)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fd56c5801657877b53503e2d0f52291958c2fc7f8f3f1bf4f55b4a4a3c66fd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMRSZ2003181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6c020646d1631537ab454bf510fa712a00ebd22e5a9955e6718479a2bf7ced. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:10Z), 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/USUYG1412843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6848a8f12007532ed8b1bfa6cc16ee7309b2c1d5d5dfb0ef6c0b479389f4df1e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USUYG1412845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56cdff07c7ed693c34e2d375dc61639576af32660e29aa12184351c49a1791c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USUYG1400373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1644b1c5a70063331dac327ad05863af436feee797d950048438193645c9731. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:08Z), 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/USUYG1412859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1241f923cb14385938857b4ef49d9840e8e076e3fde95e92caae6e2a8f4b9435. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:16Z), 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/USUYG1405594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523a5ae0f8465882b917c440f7de6393bf4ca9838646a6ea22a4e6817b302da5. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USUYG1433676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285032a8f288f23e6ff9f59d7d8fe55b6abb35aafdbeb8a5a22a8ada0e3a1df1. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:34Z), 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/QZR8K2341001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235790b6e63e119c247248888e5c7ed1909f6aeac15175612fd8d50d019fa4b6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZR8K2441013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c48c62f30c78840357f4dfb4cd1cb0cd281ec695c63579c9e4a92dc98441384. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZR8K2441021.