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 0x35042d8ccaeb88400f856acf6bee88403d1f7b021bd68a3f8e7bfca255df82d9. 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/72da6129-6434-4f1e-9d95-adbc5a9d0ce3.json and https://artists.proofprofile.net/proofs/artist/72da6129-6434-4f1e-9d95-adbc5a9d0ce3.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 0xc869c6cf5172b33e7036bc3991831ccd0095ee82be50855567bcbddbd6ba1ce6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCACO1642428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f9411885994a618bb6078cc554bfdfbf0a5ff3b591dc6ec2e4abdffaa9888f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCACU1652576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585a9ccdad5ec75a6762e028a622428d25715c1b0a51428582c1c6ddcc39ae75. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TCADD1709910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a548106fbfb7b3eb1478fe9729627592ac999dfdbada4da056d45ebd0956e5d. 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/TCADF1747999.
We Wish You a Merry Christmas (Happy Hardcore Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb464cd391127e260d57c54a8e7465b4857ab06de89baa23ead16f7ab3096769. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/TCADG1704758.
Polyushka Polye (Hardcore Remix) [feat. Katt Kai]
Hevenu Shalom Aleichem (Hard Dance Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5957a325369df9a5090ff2c1a506ba54449988189147e2cdf6d1bf774915e2a. 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/TCADL1847657.
Most Annoying Song Ever (Hard Dance Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f344a1afd903bda8e28b08e12f6da2368d24d63bbe74e42a9f45d9bf9a8ba3. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TCADM1893302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b077685a3327dc15d5ab86c2221d5654d9ca51ca39ad54c0731dcdc03a248a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/TCADW1857232.
Bwv 1018 Sonata for Violin and Harpsichord (Trance Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e2b62eb521621ba35322a004951e97627ec66d61c95ddcff7afbdc11b607f8. 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/TCAET2017610.
Logic.Exe Has Stopped Working (Hard Dance Mix)
Logic.Exe Has Stopped Working (Nightcore Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7e14a445656906efdfbe9a823c281d22f40d8e437b78667a4cb5dc2601e61c. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/TCAFG2075269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf41e1b1ac2c8d4ddbd61bb32ffa9374dada3f80fea36bd5cb82c242ff84ad4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAFP2172248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee059281dc0ad844499dec19165838c3a1cf32bd596d92b7aadaf5ead7967ec0. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/TCAFU2185441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85aaf93631b943e0156d371330d780a68932439281a257e347477252797b2f6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAGS2396873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6f5d8d4714601534d79114dba6a0884769b24be1debd57f68cc6ba632c529d. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAGU2328206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6625f60d3664ea130dd148a7d3fb03ea1d6e63037b029b72a7c43a0e7bcfb98b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCAIL2492313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce10c4013cb4b71a5c096ef2c43f8f88c6a5f53e4669c6b8b4328cca754b244. 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/TCAJC2433286.