Ultimate Painting were an English alternative rock band, formed in London in 2014. The band was composed of co-frontmen Jack Cooper and James Hoare, with a revolving cast of rhythm sections. The band
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bf2bc199568b158b2d2271b82a60cdabed9cdc73bb4d220f8c384a72fa616a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5d5d2a4-d5d1-46c9-afc2-001dc5c2dba9.json and https://artists.proofprofile.net/proofs/artist/c5d5d2a4-d5d1-46c9-afc2-001dc5c2dba9.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81390a13ffe86a21e4facd52390f3bfca3ca5f2785dc1947e06c5e4e78428cb3. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:33:14Z), 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/QMXQJ1408104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcb492fab98fdbbbbc60d67d9e772c21f68a99e869dc80ea03af4974a01749a. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:12:35Z), 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/QMXQJ1408106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4dfb447b6e2b150fb93c1e255d39732c4a854b38aa0ffc3f266cd0f553b047. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMXQJ1408107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dad1d552286fcf14d7d305164c01beb643d39a34a78d954357fad3683bb57c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:54:25Z), 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/QMXQJ1408108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b22650cb62049e2b0638868e7c42f44818e27ad346738f30b18d82d1f82e74b. 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/QMXQJ1408109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd525a9f6943835f83a4d32214d3c8bd53844832eb308736ff3426ebec054e23b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMXQJ1408110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc091c3ac0027aea44472ba1a231efec0512944cd55bc928cdb3e1c06c8bb42a. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QMXQJ1509602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a7c1a89616b916f152fa439c5976bfdb1bc4cac53973f93f627d463bf8cdaa. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/QMXQJ1509603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1433283a2ab9853032ac9b08c349033817b595af5aaedd19d299386347cc377c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:04:47Z), 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/QMXQJ1509604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd81427fc25c00e703ea5ef094cb1a0ee11801adf5c48ddc84e22dc69f443f86. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QMXQJ1509607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4f05f606d20d2f1a61d8b56b6c89fc7a250271fdab3484b39c9fb0289f26d4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMXQJ1509609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb66693ea4320527f4b9b4522d09eaf6b1e68dd27266548fb3cea9f1c8b0235e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:56Z), 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/QMXQJ1509612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70267782aed62ab45448072dc5c4146e285f1507436497e925de4c70fac6f8f0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMXQJ1611201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0399ea183967583d7c65b62234d073d89e430f54ebb2bb9c594d77ec1e285c34. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/QMXQJ1611701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4032faaf4cd93eb7951036d8c0b497485ceafbc8b560e60f0202c8e37c3c394. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QMXQJ1611703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a863f438b99fbfd26b64fa41f69a5f18ed8c0a5ce360cff28595d407f993dfe. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:22:28Z), 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/QMXQJ1611704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64a1510818e5f0ec10338922391a156e7f43bd7b22af34fa479cb4dfafe6ccf. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/QMXQJ1611706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b7ea8d40ed3a2ed991760d43aca3c3bc4bbd2aa1f31818abc4e9f351cca98d. 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/QMXQJ1611709.