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 0xb3ca70c2280564748140b6ae689f0471f06f608cfbf4dda5dc78b928e3ca7a28. 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/7dd78ff8-e9af-4ef6-b90a-b70fda56e7ca.json and https://artists.proofprofile.net/proofs/artist/7dd78ff8-e9af-4ef6-b90a-b70fda56e7ca.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 0x9493722db15ccbd76274b38d4180fe291de0b1f24f383b69374a8246c231b3a8. 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/QM24S1802846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b108c57385238f181658e52630f49e4d771aa13309120ab034cefdea573b17. 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/QM24S1802847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b54ad3b6450e7243b67cc148008c13ea632c521652d7e900f85740ac1f3cfa. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM24S1802845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb89b0a07a8a10a381539c797b282b88291917dbd55ca237d71c6320c1a542ac. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QM24S1824447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa54d5b0fff43649ba88f740fd7c2341b32182749ebbf024b6b4adc22562c31c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:12:06Z), 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/TCADJ1770936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaf47669b452de6c1522dfd7bb85002e7c705a18de81db9bbefc7b2ab420806. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCADD1738091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baddd1718eb3aa162715206495faf7920fc7118c250ea5163f18f4cbf3170c8. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/TCADA1726009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9dbfb57deaf6962f76e585a986faea702f960de6889cc1cf9903fb66ae07d3. 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/USA2P2022371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8985f06e9a51ffad1ecab64cf36620dee4d1c6cde3384af14a164b7980505afd. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USA2P2022372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f814131ac1b7e32b7e59418d27e68cb30b19470943d3c18b8ade88d1777bd41. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:45:28Z), 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/USA2P2007965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d0c34da4e02a2da2041211a91136ceba1ffe01530509b9c56b206fc0a628a5. 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/USA2P2022376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac02a56efb9a9866355b9e4f554aa652c282d600e53c81c8932536d9664dda73. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USA2P2022377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20315e61116844ecb7b6c9301394af8f19f467e38ba44921f0a0ae481ee1078c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:50Z), 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/USA2P2018727.
Don't Play With Me (feat. Ty Dolla $ign)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ef230617406bd792e0043c5638e8209c87123344413b2badbe80252385708c. 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/TCAGY2339009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7fdde69245b60a1f34dcde412102ebe0042f768b46c5992ac4bf38f6b13f5c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJT2513723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cc967a405a22529df22632377a8d093779b1b8ba0cbfc8a989bf8ae31b41ec. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAJU2513738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ae4896e055b07abb9c43663d4838d113626d3b5b88dd4af582a81e97cb6264. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCAJT2513754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60c4a39c33de622521545d0396f670affbbc238e64f37dcb2aafaf9705a117c. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCAJT2513757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37f11b562f7c81297a9c039b547e8e56d4808bda9df399630a760defd94cbcc. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCAJT2513759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eac685854db776121b63ca8fdd8f49d1c5b575f5b5adfba1418e36677bbf5ea. 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/TCAJU2513786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53b89b650de990b58bc1a78372182aea7455fe724880071f8a1a3df4a558be5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USA2P1954942.