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 0x9b08858e6e81b481847f3ee489baa4cb599ee88fef83b494088f495b6e0a65f1. 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/fb4e9509-46a4-4134-8d13-b3cd464fa7d8.json and https://artists.proofprofile.net/proofs/artist/fb4e9509-46a4-4134-8d13-b3cd464fa7d8.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 0x98508fdd39a5b97c8c6dc8d9fb277400a215c38a9d4cdf02e0c84a97d0d907dd. 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/USA2B2060460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81399c1f0e1681767c5b9b0834a2933e2bdb0f93f043695311b5722f45a96514. 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/USA2B2060465.
(Lord, It's Hard to Be Happy When You're Not) Using the Metric System
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4264e452d1912245cfff68cb00cab1b68048e0071e04c212104ee8c48c319585. 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/FR6V81689414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cde477cd95b10c58db4e1c5653410aca4ea470d7ec7d72c9407980c25278af0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHR20320001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6544a010d4bab13b118d17f6d0b7c4d17f7ef2f920caababd9d70effc2576d4. 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/USHR20320005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8eda4b01687bd56620770bde106ae606891e1625a311169a4377cc13262bf5. 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/USHR20320008.
If You Own The Washington Redskins, You’re A Cock
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee50e3bdb8720be983536c3d41a6fa80816a512d0d0f45e4b774d189cda4443. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USHR20320011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbcd9d5790195a57a6d273cdeb76cd4d986de6ebfc123df32be3e8636c801cf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USHR20320015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176e22d6f3b57537dbdb3dfa42cae5fb345ddc80653001bc1d17da22ba1df7f6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USHR20320016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb061b977698cd285dd5f45ff2ac681d851f1b79be4177203a6b1e47eb5936c35. 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/USHR20320017.
The Palestinians Are Not The Same Thing As The Rebel Alliance, Jackass
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740f8d2b451cacae1ae1dc13224f10603eb0971e4957f161ac1566f7ab628e77. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USHR20320018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0089e3cfbcb95eeb4cf6068727837927956d148532419e601d10d2b8feff72e0. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/USHR20420033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d6ef2dfecf42105ffafc628de8796405a2cdba631289a5b6f48bd3b26ea77d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USHR20420055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbcd9d5790195a57a6d273cdeb76cd4d986de6ebfc123df32be3e8636c801cf. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USHR20320015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176e22d6f3b57537dbdb3dfa42cae5fb345ddc80653001bc1d17da22ba1df7f6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USHR20320016.