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 0x5fb167aae1f371e36cc64d50772e913a90a5913e6d765d1b89da09d58fbfe3b2. 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/b2ab0154-c979-454d-95f7-b0865684c546.json and https://artists.proofprofile.net/proofs/artist/b2ab0154-c979-454d-95f7-b0865684c546.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 0xb97b0a8dc4196705da5303537108f2991c1308cea46eccc149add93cef8ce461. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/QM42K2271048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2720e1e89eeff9c7783bd66d52822a502e0e24ced8130522d1f4663c1f451356. 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/GBKQU2411427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efe1652f7b420e2e9b258567c4d1d257e602bb47377de5752b79ca3cd334f27. 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/GBKQU2460121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58eae818cbf3505e83e86e356e759863d678c080df5ca5fdb984d18e5103c95. 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/GBKQU2454102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf06409c9dcf8517b5ffb977a0e191c2f5a3f3eeb62531666fe2fcfdce2c84f4. 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/GBKQU2444344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e115d63d89a3173bb9b71565c8ce93f4ef0954a0a99102fdc8c8d0e6a784516. 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/GBKQU2431578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594c38c032ad4a446e0d7ec0b1a723248f0dfb14e1752b65f590d42b4d91eab2. 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/GBKQU2421294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e9edb61818a42b250335be47257a8d89fc53e1492331a116fd9777997776d6. 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/FRV602300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655252649a0c47d6c8817536e2792e7d3729ec90b75dde6f9fa07d38ac6c2bd9. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRV602300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8f76a39360501a074d621b88244e1a73a5866e9d7ac646b058d31f0734eae3. 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/FRV602300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc447797ae3ab3c7a42145e069f0705f8b666c8a4a891bc2377d021a2c1e688. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FRV602300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bc82086b4f9139f84385ccf7fd8a3c7d7745f06dbb0b60c902f7e4b94d9f50. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FRV602300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792f36ab3d33fc8d8d94fe6720cbec6cfa931231afd94b17ba8d7fe30747e542. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRV602300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691c16a3c243525748d9d6bd7202da68a66309814f5358cd1d8f9e1394dda6b9. 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/GBKQU2346107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6775e7add5c63300eb71c9df9cac9c95156c123b8fbc38a1e5be9d4e00933a. 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/FRV602300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429ab0aa42b57fe12a6b371e2258944a5f9f97d4c5f5648cdf40b20d0488ee1e. 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/GBKQU2305990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec1b3be006aacd73c7ee514b0b5c29dfecc5dd0f5dba02abb4e970520ea9ec4. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FRV602300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc070941034c1fc55b434f42324616fd65ab5b5902e9775e527dd035e3b898d4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRV602200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ba930227cbfd6a15485831175be30209da7735cd02cd29ebc5556692103a0b. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/CA5KR2297969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a48ab85fffe83d18c3552e30f64a2c28d1123c650619aac88c6db8f10b12ea. 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/FRV602200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d0eaadda6eaba47592e5523cae134b3a996314c8ca8d09533f2f09c2e0ec10. 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/FRV602200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4738355e7c33e6a8159f8fb739b11c8ce022c481040a417c3128d3e33fc6664. 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/GBKQU2224655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5041f5a11e138339e0aa2f264c66d44cc1f3a80f54d851b89c48bff354d7c791. 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/QZKDK2221594.
Back to You (Pokeyz & Bovalon Remix) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90167b2530adc9cf3fbf503f9002966e06fb90e89c726e704a53d33d7992b7a6. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZS632132894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67679741849ae03ad02ae33f463ed9ebfd59b27d62e3ca2a7f8084088bd5072d. 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/CA5KR2119230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15159d2ea33831ce6bb265625d08d7849752f8afebcc9d3ae1665b01485c7c2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZKDK2026718.