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 0x469ad0c9cc7323a88e4eeb672ee7773b781633d7b3a0f5f2504efa0d70988354. 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/28b92545-186d-4c36-bf2b-b43a298576f2.json and https://artists.proofprofile.net/proofs/artist/28b92545-186d-4c36-bf2b-b43a298576f2.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 0xa54db93f433f06b1a73e93985fa3746dfe16250a6f2164336f23551522dbb530. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DEZ380900311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d25962c38a11b4a947d146d46baa0806037c679660cd012ddfccc2035bc5d1. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEZ380900313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96aafbaca521b275c0dc97c7ab69cd2d0c28eb728cefdaf5353c59d037861a7e. 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/USCNJ1000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d72d453ace1296ac15a787dbd64cdac43eeac50136657b53d9df392b2ca6cd. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/DEZ381000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee34f3a333cc276ff8445b33b71e19dc7b65d76d707d285fde9730c4b69d533. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/DEZ380900314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e4d9f34f97f74c15295d71da6ffc475125e0db5d05d87279c78f9039ee6daf. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/DEZ381100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf615da6db86a40ae458572f93a1ce70301f8c589c1f0f0370ce31822a7d22be6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZ381300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737649ddc141f0c5f943c966d0460821b5ccdb9e228cb118d308036f88c97ef7. 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/DEZ381300073.
Run Away - DJ Favorite & Mr. Romano Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319ef25397553ed98c703651b11dda17d4da352fd3237ef73705098dad139946. 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/DEZ381300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54db93f433f06b1a73e93985fa3746dfe16250a6f2164336f23551522dbb530. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/DEZ380900311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310cd4d0d1508ee57400601a65cb992d278a6bd97b16252fa27de999815cbc27. 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/NLC280911557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad259a4c431949339f2e9e2d122bcbcd9d11f1c6adff3b6b02ac5ceeaacd1362. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEZ381000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a469a852668cd92d3312f85d3631e7d6e37b3a77ebc52e82ec34f9a3063249. 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/DEHK91476703.
Gloria (feat. Andy Reznik) - Melbourne Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a469a852668cd92d3312f85d3631e7d6e37b3a77ebc52e82ec34f9a3063249. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEHK91476703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dc2fd79a3f76a50b38084aba5b813f0b040549c4584fb0b18c0931feeb5830. 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/DEN061800383.
Englishman in New York - Ti-Mo Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51905d2975c752f8ad07b1d559432fb84abce372b69b75f235c5fdffc9cfde6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZ381000098.
Evacuate The Dancefloor - PH Electro Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8108803482520e89257f643e641bce5e67c6208b555e3d2843c2bcfcac2b873. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEHK90911318.
Evacuate The Dancefloor - PH Electro Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b77810f7ed7cbb1f3e80531bfcd522dc03730dd9bd7124e197cc2d0c1ffd210. 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/DEHK90911319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82063541ab82f3c73270a2b665e0e3c0b555a3c9440fb36e7137e3622fe5359c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEGP21200524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf5b2b0f606d37edbb344d53d9f9084eb5195516d9743abd135be9b02d3cc92. 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/DEGP21200527.
My Feelings For You - PH Electro Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25177f561bc6dea083ace05512249ad434435b01651f03792c203870ff4a5844. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEHK90909102.
Video Killed The Radio Star - PH Electro Remix Edit
Bounce! Summer Edition 09 ((The Finest In Dance, Trance & Hardstyle))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057675528cfaa2a020ce7ac2a3fed939d3447dd72775c39d1951ba74b23866f5. 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/DET190901600.