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 0x5a59ab37183124c3be861f6e9cd164522d07ce5263972c4c4692ba00a2bbe3bd. 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/d73ed63e-5606-4369-981d-0cb30d50e0a1.json and https://artists.proofprofile.net/proofs/artist/d73ed63e-5606-4369-981d-0cb30d50e0a1.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 0x855e75ba2c2444a1408c80e30ffd49d8f6a2789351d906b7f98d46f76f3af061. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BR1BO2000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600a7ffbf5916f39fd18f41bf5d3bc552d1bf52c45e7897c3b840f2ac5a87e49. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GB8KE2200429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36edf4001ed0011a77d656e5643cd59e59cfbf6d6a20c01d9268a217d512a281. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:03:46Z), 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/GB8KE2304089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb16c042aefa6ad50ad71492ce2d0a2c6f44e4b94564326a11cdf480351c11dd. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZAKB2338724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8fdd3071ce2def85f0f81fde1ed7b59a8c5a912536a9d5859afcd4d7f703c0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GB8KE2315803.
Collection of the Best Tracks From: Obzkure, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a57c68f26471a50a1adc29ae0d4a19b91bdc76aedb558efe13c9cc5e116481. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GB8KE2403239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ea5333f883861c2d576e8b029d1d0d50cf17ffe3bb7b8d24307e5e24f17244. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GB8KE2403851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f4094a46c0ba469142f193db6b92b58129c8235a33a3cc90c3baff2922888b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:18Z), 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/GB8KE2404273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5091e3728d94a553d600081316ad20d9d47e904c00c7efcb4f75891eab8f57e2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZYD92402111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edf545ea458a9289e765badecf7cb71083ed1b8f70446be1fa151e722c988b5. 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/GB8KE2411102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f2a119ccbefa1f109d60aa0b0b13bcfa58a1ea656accfb135d8fab24beab4e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GB8KE2415591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73b6d805c616ebee0565b964cf553c5a25a68611beabd4575fd191e99515c23. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GB8KE2416427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321b6e76b24c37081edf7d62d97cf71d59099f55482ce5ac35f70b0a76cd37e1. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/GB8KE2419292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06832e85ff8153542f12340d79849fa9811ee50ac03fcfb9adceb3253a908602. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:31:32Z), 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/GB8KE2421228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbae2161640a0d2f2eca8537bf03676e658151af05516432ae83b58f9d023bb. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GB8KE2421613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b2273b7e6c6c99a4aa4632acb6b9b6bcba2e2bf01c3a2de30461565bea2897. 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/GB8KE2423127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c200b5d32a37b6d7cc1501150f10c5a9e2040392ff62fb8bd2db8fbc6a6046. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GB8KE2428029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98abca720c2b4b2f2b557df9fd98c21ad116ea3c2eedec174c1c0ca6f59aa683. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GB8KE2429259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3666470fd437b4d17378c672d220fe31275600ac6ea8931b65cde027334b8fb. 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/US83Z2426396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11dad5830fa527617bf9f2a3b2f6b8834337d898472f209ea81dcb6a6b8622f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DGA0T2432741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b97baadd9418bc1be8b54b29c5221f62e31f42616fa2076e0745a744923c21. 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/GB8KE2504524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f647f5b1633f465e48d761aebfbe6c860b837e6b40c0363ce094d18468e9f9. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR10S2594019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a6d1a148c4d892b4eeefb7992a100aa05e2014a4685f39ce8c7f1e697d98d1. 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/DGA0R2474238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cf5fc93a547bb77bbb0791e51ee1caa9fa6d70acd5e95fadd2aa27ac793ad7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DGA0R2474239.
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 0x1ccc3132bf14f68faaa40cb35e7aa2cb0fcc3087f5a7c3216d0ece94204c2f20. 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/BR1BO2200011.