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 0xf917f2fe0d22e9b2439564904177c16e30209b08b6abe2de60f146f99b944b2c. 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/c2523431-0e41-42ba-b4a9-9b0e03c1f638.json and https://artists.proofprofile.net/proofs/artist/c2523431-0e41-42ba-b4a9-9b0e03c1f638.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 0x28aecbeed9fb9f7993495d4d81d848302819002c29272c87182a17b29d266098. 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/TCJPV2369898.
Plazmawave 64 (feat. blaxervant & Shinonome Interface)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233106c8de0edda214ee818dd69dd5c4b61650a424f53b8a0d33043fb033efe1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCJPQ2167237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af378f9106a91bbf765a3a167851c4b082c44f384b5fa2bbd0fbda8d8c6f566. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCJPQ2167241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc43089469ce34a9c5fd563d08727a28cacc29ea07fd8d19dfdf9a399c96a9b2. 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/TCJPQ2167247.
warning@sleeping (feat. Matatabi Sound System, DJ NECOJITA, Shinonome Interface & blaxervant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d84cce8f38b6c39e23f1e62b4bb8f44be10ad0f96d71b2231fd9e37e383fe3. 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/TCJPA2421833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b0ce529f2989d70f641aa98647ea3f419e65e7e6b344ca329c8da1289079e1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCJPA2421837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288c9c62b2bd27fe68dfb9ae0c1afa5104e747213dbe421bc37150c7464fdcc7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCJPA2421846.
Hype Invader (feat. Matatabi Sound System, DJ NECOJITA, Shinonome Interface & blaxervant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2201e6cb5d4c948043e80a55fa4e0f6edd8a6c38dd17fa1f0ceae86cef8ed165. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCJPA2421851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e4c39e746345e47ace36c0723d7ac35611b0c6e8c75f60f330064ef5597729. 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/TCJPA2421855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ed46ca80d18585aa41b98b45242babe550d7f2ec4e8c001fe4c5fa41341893. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCJPA2421857.
Emergence Failure (feat. Matatabi Sound System, DJ NECOJITA, Shinonome Interface & blaxervant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f26291af6a0c077daa866d9ea95f4671b1a2512b020f290096bda828baac4ae. 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/TCJPA2421865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd661d1471d36bb34e702cbd829751faf3c5df1515db5d6fb9136cf7857bcda35. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPP561100822.
fun TIME (feat. Matatabi Sound System, DJ NECOJITA, Shinonome Interface & blaxervant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1f6fe26acc700e365a2267aadc846b2a148ef7aed4a22fa163fc4d00d50683. 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/TCJPZ2497103.
MELT*DOWN (feat. Matatabi Sound System, DJ NECOJITA, Shinonome Interface & blaxervant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486b57053f025d9b73f42169cf3569263f786067d67245a82001a094061b1376. 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/TCJPA2406276.
HARD-COREMATA (feat. Matatabi Sound System, DJ NECOJITA, Shinonome Interface & blaxervant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1bccad9c353e1bf6d1c5693e731e7e176118e3d602da8b0080207c4f7f966e. 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/TCJPZ2493608.
Leave it to Fate (feat. Matatabi Sound System, DJ NECOJITA, Shinonome Interface & blaxervant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28028fee17c927c5a1366a45daa6d038ca6b10d8b1fca653155e2dc87898278a. 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/TCJPA2402054.
Silent Echochamber (feat. blaxervant & Kobaryo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2becd5ce62a878872aa9c311d174939014e36472eeb87e2ae8f55e6b9829ad. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCJPG2544002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521f8330588e2d7b5539e91c79ae513f668f7fbe15722c38bad36bc80e5374c2. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/TCJPQ2166902.
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