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 0xf4bd40f7b02c55421fc1e0fade69fd5fd59d56ff55945d20159997cc49e8c01f. 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/33169097-f5ca-4401-8722-30bc461cf2a8.json and https://artists.proofprofile.net/proofs/artist/33169097-f5ca-4401-8722-30bc461cf2a8.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 0x8e55795c736dc9b597f5be7652ac46a44c12cae88f2300ddbbefe97a746d123c. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZ85M1805271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dce464849caf77ee270027bbd72b4cbebc79ca97891a87646c87e79c5607bc. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZ85M1805273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe345099c7b892a812069f66df255dd523a74ea258cc1c67696f7a2e5c130fd. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZ85M1997964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cb0d190317a102c25bf9aa8da1348d32abe353ea92b259863065577ce98768. 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/QZJG51950399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad710d0e11bdde669e956bbf85719d554a7ee354aeb2cbaa9b7ceac66456e426. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZJG51971702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c52a92009a74670ab0d6d72bce4e523ec7c9aca6848682236978df144cc2649. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QZ93L2032971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2ff406bc8551c12aac67350316b5823b58cca882103d4b1315be5d22a13d59. 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/QZ93L2032972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72c0e2e1e0fe23bce4e70762a729400ece8b073fb13f7a8787c8253c3b49eca. 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/QZL382098679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1333f1f4eeac2da02db8e8d6ce4fce651b5668706c1cdfc7945470b5de9ad01. 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/USLD91737334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915745be3be09f5b961ddd13bb388b31383a9bcb7bd23c0221222e9035c1a055. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SE59D2148301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05bf079361d818ab933b2d6280aec9f11c1d5fb0a6886370effafdf0356a0ac. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TLVEM2458617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29534e81a1c89cb338fd3544b5c2cef13a970f349e33b0797c046e995a41e133. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/TLVEM2458675.
ain't happen overnight freestyle (rip dmx)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5790b407994b75c69c895f5632fbfdce1ac877810ebf147321013f7994aeccb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TLVEM2458687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4974c40d761952e775028cec21bb31e5c939041f55dcbaf2651ba9d5acec3d0. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZMER2204341.
I Told This Nigga Freshie He Should Shave His Head Bald Like Me And He Laughed, I Was Serious!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed9bfef1cf378420269a91c09ab3ffc7ffc48d0bb5c5b07f30976d55eac8fac. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZHN72418855.