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 0xfb2435959646fd9109a4a9fe6ecf83386c860eb7a57fed701157315d963ad8f0. 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/3fccb0bd-5f92-495c-b3bf-8a9157268308.json and https://artists.proofprofile.net/proofs/artist/3fccb0bd-5f92-495c-b3bf-8a9157268308.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 0xf26610d8b501d882a478c291a314d776daf094c6e5a5a767926065a2bde5060b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEHN60710040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c619817e5e497925f35b6c10a6f58200662b0f57e662cc8d259ea50da16aaf. 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/DEDL81001858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd23805de64f894b42f775082e936f6ca756526cc7e756cc823011888a16038. 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/GBKQU1923189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1742eab2926cf3641c239a1ef675377e254bf8e442a7d3f3df95eef234573e. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/ITA061301837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd39c1fc75548619954ce202879cf328f2b9a9a85aa31a7b41ec5ecd90d3d00. 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/ITA061301910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b866e67fd54566a72415a6bd70484a292a7c2cd54b3720d995e21f27167b22. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEKB72067764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e1b647a411f8cbbaee934ad9685349c9c425631354403cd7a2683f7756ee72. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/DEKB72093175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecb35b0c395cbc3650195b3b4e9c6da4102990566e285596c46e93536b23409. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/DEKB72093225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe090e6570c5f95a71114d4c12507b11337119d56da17371a8734f00323e5e0. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/DEKB72093176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853fb1a8c88d875ed73a1f62f387dd549673fb0367944d3355922a58bba155be. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEKB72093177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3a527647228778f3146ef5eac12c0d8beb7e862d01e0b3819170aef4804a0f. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEKB72414282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8256f710ca666b1c2fe7a103d591fca462c9aa615cfb151c66ccf94d2e01809d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEKB72414179.
Delight - Arno x Dj Dope - Magic City Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87425221951bd90a8a3faa3373165f8d0ece53361cda9b5c5b23eabfce4f073c. 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/DEKB72414281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2107f0530c4d42810686bda490e6dd04f5b49a445ec04b4410546f306c8d637. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEKB72414180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf364fb4d33781fc0594135e5064f30ecb01805c4ccb3319fb17de70ef455828f. 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/DEKB72414178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d26c4c1050c7f6a7ca4ee2fe15598a4365de776b7a16d90425ae16b38c9e10. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DEKB72538706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6fb4410b3d663bc948876ca02acad463195aeeb90457d84453c8d5b383b0b1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/UK74K1400191.