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 0xb7d8761852120713d49a2a92178ea8d3cefd96deb2c2f9de5ece9a58234aef2a. 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/7163710f-f663-4f27-b00d-a15870d3e40e.json and https://artists.proofprofile.net/proofs/artist/7163710f-f663-4f27-b00d-a15870d3e40e.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 0x348e4e4a0c0769a61e28d641e97a07fba3d4910bc0aba71bc93f8486732fa3ca. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZES91871361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5880b3a88ea4f5222502a58c3bfe80b61a61c5e65d3688a7b388ff0c165bbbb. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:29:28Z), 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/QZES91871364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2502f01f80af1eaa01176d59c1cc2177cc238b0dbca673a2ff521e8c2c3c72. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZFZ31976066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf001292b3a2c416842e2369c7dc0114ad6a28ad3d2df3a0520a6b5559b375f15. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZFZ31976068.
Hair Trigger Concerto (WTF) [feat. DJ Akoza]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f415daec0271bc4c176f74f9f7f7fd40fffeb1028a341082a8d628c84ba32f. 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/QZNJZ2212406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a69c37a96b7627a18365fcc58b1e47d85c8dc6ca85890e5893716810f8ae38d. 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/QZNJZ2212407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262b83672dff3e0c077eb659ead72d2512629f394b3ea3f0723e1840ed8480d6. 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/QZNJZ2212408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed84bf488971126dd996342f46bc83168aae39a357cc9923398d3ac75872d3ec. 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/QZNJZ2212409.
God Bless The Dealers (Dr. KattyWhompus Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a51baa90195a4b3c60e917fd8e92d4d6c6769118e61cb4f37d3015d5885d0e5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJZ2332514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a6670ef096e43e137f46f2c8596035163460109588a844d68a0316c4d1b607. 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/QZTB62330063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8701e62cdb7eb5057719e8ad7143f626540eb16e7d662fe73f0db294e2aabe. 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/QZTB62330064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad671ad7c720f3c117932847f1c5b623e1d86f43cc3c6d7057c8194019f86fa. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZTB62330061.
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 0x0ebbbd0f90a29d3cf9773a174698d6cda29a69d6e3838620aabcd847258e8182. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:08:30Z), 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/QZTB62330062.
Big Lurch (Mutant Mix) [Mutant Joe Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed613f8159cd76a37c839a531fcfb23ef4a310cbbd67967c2f35f37e3589995f. 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/QZMEM2415857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d4035642fe80483ecab9ea801559f7a78e0312a265cc2f53cefbce396564df. 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/QZMEM2415858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3e09f6b6d7f06addaba9d6d72d911d93225c55bbc49f232be394b23277dea3. 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/QZMEM2415859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0e6face3e834bbbc8523110b95b209a9a39368da4c0e0820debdf863f114bd. 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/QZMEM2415860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6a58ee1678206a89170c3144e439c191480119337171ba28639d5de2cab2e9. 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/QZMEM2415861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9d41201f3affe09144031f1ea6fbde1da66d50839ed75ba6a653ddf9452704. 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/QZHN32577807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a89915754a0e60bb39fbddf69c7042a4c9bf83f22e02f2ecbbbe9e25c07f47. 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/QZMEP2210013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceff4d4a97204f07606adcf97129ccea0d3da399d39627c55c937254a3e6c05d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHNB1964517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91608a2fdd329707ecabecd20f6e16bc54858c8cdd48b16b8b160b1f64feba8c. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/QZK6N2050925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a8d18933790090c31c420a22b6a4fc1477ce9ffab34b96717ecd9b2c5a57cd. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T17:00:25Z), 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/QZMEP2210016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4473c7489b2480021dfdae05d206b0ce896166dba8a37cb459d58ea7285a892e. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZNWT2332365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f46c783a75e22789369f7056a493f59897376c0d2ff00f6cfee82eb4e7b025. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZMEP2210014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5625ebe28c74390c9238c37cacfa319c0061d64f3af622d3ccc1e2e13c0f1b71. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZMEP2210015.