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 0x6bf53ca1ae55fa0d1534c31a9c9ce8c36ffe28133bbb539a765f5778a43fc991. 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/dd0aa6b9-8226-4d01-81b3-a3ef142e19fa.json and https://artists.proofprofile.net/proofs/artist/dd0aa6b9-8226-4d01-81b3-a3ef142e19fa.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 0xfea1b6fe05b855a687a764a3de8dfdc6235103b482b7a5f21c41cfb394b746de. 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/QZHN81926021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec398e89d11987a625571cacc052fabd83df2954e58c443ae847ffe5622039b. 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/QZHN81926022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b7351e5a7916b5ac47ee9381a756ed4b27fd002de62a9822b4ab5aaa02fcf0. 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/QZHN81926023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f04375f4f5a535407193a6e0750b56046512c785e4c4de5c0d9c0ceeb401131. 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/QZHN81926024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c92b432b332ab5fdf459d45e089c6445eb1ba7e1c5708b39fd06f03d6871fe2. 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/QZHN81926025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdcddf72cc0f914260f94c5568f020bc4bf1af802b4bde1e04f78161f0eeb07. 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/QZHN81926026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b8d206b8a313985b416018c19807f2128eb7273cdc74f4e1b7bf1dd17a6488. 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/QZHN81926027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16d4cea56f7d3a5fb00f51b2fa093a5bf1d2f6f0f369702b057e4fc4923d331. 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/QZHN81926028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c2f00a15afd6c6611c7957f44fa38e3ebd9d3f569321b5257408807b9b0bd0. 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/QZHN81926029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc81791b4a0fe9bd019414f0b64e20e624c0b05dfc51b16e90001b8464f5bf4. 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/QZHN81926030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16772e7dc8d4e62b4bbe27ec7451895adcdc1caddcd7f5677f56ebe9fd1435c. 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/QZHN81926031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74053a20776181b3bc535c3a6f76b552c95f5994637bf9e0460972999dcc2218. 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/QZHN81926033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe77a81b928958318603769d1160abee4a0fbe90dd142b77badab77cc497da96. 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/QZHN81926034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e13c33e20a130615ea4d202752e7fe0551c9e292ef250ef8cf2507fe7554475. 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/QZHN81926035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b92f2b2f285b0c6a33c2b5910699c709604ee428dd2432a2aa2967096148a20. 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/QZHN81926036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0b5494440c1a99c835b088ade5f6af2b7c6c17de43e30a9ad451a818f31090. 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/QZHN81926037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f2bb42dc56d863ae5b53706c529c0e75b855786b11104cec39ccb9fab13fe6. 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/QZHN81926038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed63ffabedec858acc9945cf9f484c81da55e8c97c4e8bd461e72c3546d6e25. 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/QZHN81926039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8df395c4829536f41f175676fac7e94fc8d47a5f67798d26713315fdfe1d9b9. 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/QZHN81926040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea0d583ec8507e7ff301657cf06178962d867e84e7f9cdfa876464c8d30305d. 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/QZHN81926041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba864f7356f10ef402d2318e3970be8387688ab4601e0150d270d81dcfb2025. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZHN81926020.
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 0x4e50cee910c94dbb3ad699bc42a552581ad4b41fe3c5eb78491e8bc473927804. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZHN81926032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60596822e2dd3bd16cbb002212f51bbccb595e644c4b01f15b742c0e4c5126a4. 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/QZTVM2160656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf45ff1018c61be884eab83fbc4da148625d64b05874ed5dab8ee744399ed260. 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/QZNJY2130978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93a73dd58740d571b2be976b30d042c70e9a145d170a46e733c3d9d1bfbdbca. 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/QZ5AB2116962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fc459aa463be732edcdd7a82b0e5680fbc05a1b232171ac4492f32cdbc71b2. 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/QZNWY2071169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded9133591db9d14ca5b0fc87292c6ca3eaba02a2a14daded3c8e571d9173e5c. 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/QZFYY1979270.
HOTEL LOBBY (feat. Anti World Gangstars)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e1da4a3b82491437eb504b3520a359b9f37e90d68cc79ec70d93a4e1092795. 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/USUM72317893.