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 0x1cf0a3114cebbb252d40316e8c5fe06968cfe10e3566abeeb4f9ccfebc19c293. 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/3d892851-11c0-495e-b61b-cc27f80a816f.json and https://artists.proofprofile.net/proofs/artist/3d892851-11c0-495e-b61b-cc27f80a816f.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 0xfc5d5bc4fd40ebd601fcb57860a32fc0213ae90effcc7660392384c95e9f6788. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/QZK6Q2108010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a895bc4dd141b9808808fba9c6e09c1854744ccb3ab2c1ecbec4d0058bcbf5b. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZHNA2156356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e50ab9c53961e0897b3904ecf9217fe36167a02cbbafbce5ca6bdbb99d34942. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZK6Q2108011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248461c799f84c8423d02d841a570029c33dcd7989ee6f37f5bb6a1bb335920b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZFZ32272585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aad73e8f4570257d24f78b1ebdbc612e69315c95ca48694a9fa7ec292c8210. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZFZ32272588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689a20f7affd64714398518e5e4a288f6a434729abfb5a85a1e54222bd4d6244. 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/QZFZ32272590.
straightfr0methere (Retribution-Reloaded)
straightfr0mthere (Retribution-Reloaded)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc238d8a5e72e06bcfdd3f9163792049f56551ac1110bc50126f2985ac2434a. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZPLR2289211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5231d31ed2df6c0070c5c28a37f0457a7d73416c9468bee0e9c1d6e0814e18c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZRP52266297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca14f0cf02a6e137bc9dc61ef9e436a68b33cce3762c34fa27bdf39aa5483ff8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZHNC2339509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19ada72c91a5f5bde0a113be8e4a9472f86b4c3dc201bce3cc9309d2057f2f4. 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/QZK6G2302057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5c04d866928e279a463447b8fa82da7503528e7091af509e638dac6fe25f0d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZRP52308594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc837627c384a2c685384fc44e2944300761205ce4ebc51e154e9f3464bf59ae. 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/QM8DG2359057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e5ecad19de25b86dd47afcff177011fb560208337cc69a2af7e2a9535cf2f1. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZFP52316456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb696178b3f6f1b7b0a76d42da7ad3f63ccb3874bff296c8a7dd020329fffa7cb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZH5E2337527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8907e4d9280238ca4de02aa44edbcc0592de66f50cf8c5a063058fa176d0926f. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/USLD91757624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac81f503d9fbdea97b1abade2dbe48e1b7bcb7865dbea8d02dfe21105cd2a812. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USLD91757625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b84f8228772115e6d5d0e55e3a26f400db4efe0ac0724997a1f0291ae689eb0. 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/USLD91770357.
ArcaneHumzzz..,,for this nonexistent “bar”.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc4fc4238668e0a0e9dce9f1ce9511890ddbe19c490c4034f76b9ef84743a0a. 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/USLD91773760.