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 0x74bb39e6e26b5bbac49f18535f836651d5aa51d17ac88bdfc701548cb96e8084. 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/1819ff0c-9ba6-47ff-bd00-76c0f637938a.json and https://artists.proofprofile.net/proofs/artist/1819ff0c-9ba6-47ff-bd00-76c0f637938a.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 0x16c2d07c2f3da2744d516e7caf98c54ff2b9b95a0fabe9ca290d33769afccb72. 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/GB45A2202914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e468d0c847240df92f98e9710f9d5f268a06820882b7eb575a722a7d0ae548. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB45A2202775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dac6529d3c3dd18124d27c4a20a8a95af179d6d8060e59b24f73ba29babdbcb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKPL2299715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83cd7c4bcfccf4581567d942cb3cfa8f23a2944fe2d2f15d329412a86aa7723. 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/USA2P2433379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6072ac2622305b35a9d488f691a6f6c3f153dbe4e799142daf6d9b52c7c970. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBEFR2309190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6b96e830ce14df2be4868078e0055c4c83fe7d0c5f6413bf25234b45e2d095. 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/GBEFR2309186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6b96e830ce14df2be4868078e0055c4c83fe7d0c5f6413bf25234b45e2d095. 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/GBEFR2309186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e79442b7671f3b97491a97b5b3016dec0fbc2a88496834ded0faafea2c5af9. 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/GBEFR2309155.
Ankerklause (Is The Feeling Only Strong)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b42ebe8b32148860a70e294abe5bf4b96e1aba7fe685e94ac5ec669c48d61e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEFR2209062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b42ebe8b32148860a70e294abe5bf4b96e1aba7fe685e94ac5ec669c48d61e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBEFR2209062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b5845296f77a6129dfdbee17855571ff70e93b3a9a2c16fef3a4772691f54d. 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/GBUM72208214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7af399f3cdae240cb6da77fb3e1eb14c8d8e01441546743984767cf5aa16091. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBUM72208392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0327a9d5a87d8a5dbe093892a75a3c886d83c85c4d4bc223eb346ffc9e42bd9. 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/QMDA62263473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ffb62ab388505c78ad8ea76eeb450669ce86e77acc52b411f28fb2fb1df769. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBJAJ2101237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3c476e081636d84901909d99f2ac3adf0933cd36dae95b774d9765b53e63e4. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBUM72001812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d4fbda4214d13c71df92752f16f2dae756acdf5059a617afd03fcba27033ce. 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/GBUM72001599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0882a916025405604b77c4a2bf140448784e3e3974b01beef8ccb49f4e85b0ec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBUM72001638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc369f913d149e84016a51526c38587de76c3038a47e73fc7e32d38b29e64aa03. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/GBUM72000850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a97ebdb28a7af24032886fdaca74c014cb77ae4a6a2967512867f649f81879. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB2LD2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3dcb7ea15841bdf621684859bb6f52df41e09bbfb98e3affe588611ef9b0b6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX201951146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0635ab8365c55e8e298a85940fe4a7efac259e8b6b2c53137334e602934aa4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USUM72001885.
Toolroom Radio EP590 - Presented by Maxinne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05c14dde90c38647df38fce075c6ef82e7b7e2e5297f49a1527674047cfae0b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU1988172.
Toolroom Radio EP586 - Presented by Mark Knight