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 0x627b165671c38d8c764bd975abefde9bf2190ae2e67b6ab3084bb8ed474bc3bd. 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/31473364-1aa4-4ffb-9bde-5432a0b78f91.json and https://artists.proofprofile.net/proofs/artist/31473364-1aa4-4ffb-9bde-5432a0b78f91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Young Legend 2 (Hosted By DJ Victoriouz)
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 0xda811802c9eebe64199346cf21c41d26588d50726edcf4b5c3d7961815f859ef. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USJ3V1296579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fa7503d1e2e394b2a9ac898d0961f9c041eb22f837156ec41cacfffe00d0b1. 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/USJ3V1304432.
So Abnormal (Hosted By DJ Milticket & DJ Rell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb368de2df0a908c4ec2d6fbc229bd2b8816e410145c52da803aca69f48005e87. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USJ3V1323207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc694eda0eab681133e09ce4fadc85ffa5a788b909a5054eff78f9ac5b2562e9e. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:07:30Z), 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/USJ3V1323208.
So Abnormal The Mixtape II (Hosted By YDotGDot)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1737b2b2901245e63f628c6fe1797cfa61fbd8a6636213f374f9e9c45f42bebc. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QT3EX2420056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b23d1f54d5aa65cf644668ef0af4336eecafb00e71380096c61a16c2078d8c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWS2547944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7b8d824b4141c26b8b599c944ad5f0791d9aa682438300845076dbe16f7c01. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:41:28Z), 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/QZNWS2547945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6de4f88f2726da6564f2cc63336da03bab17740aa381d33c08800dc62cf869. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNWS2547946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a7cc47e014510a0a1e6632a934cc08588a6360d198e49cd6806be442a4249f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNWS2547947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96496d8e6c5e999d213084d08d34afcc28e324dfe9dddc4bb54a68f526d62a82. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:31Z), 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/QZNWS2547948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35f03b9d0698d61ee680530abb9931ce0c846c13aadd8198260cb43394019a0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWS2547949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c037c485c373ac18733d0d2e962217eee2b15f85c245df67ffaf042150bdcd. 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/QZNWS2547950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa94e226d3d6ddc885e735afef5176d7d7440c7c1cd74a4ca7cfe4872a54b655. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWS2547951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57421816cd2a980d41ee9526b9782e8222aa14ff4f513ebdab396e288b4d58d1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZNWS2547956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3575936b4d20cfdebb67b2af12a06f51c630f486ca8daec4d2e930e1ef7fc18b. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/TCADJ1752450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9e8f6d976d78bb5eb34fb3ed2affea36f4ccb7a87a17343e660410d2e7dd0c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:45:27Z), 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/TCAJT2582179.