1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x836a20fce9c2ec43067ce41d3449d7f077fabab348f63d4e5189a2b382d9b2c9. 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/bc4e6c8f-62da-4892-8fca-af6cc67aa400.json and https://artists.proofprofile.net/proofs/artist/bc4e6c8f-62da-4892-8fca-af6cc67aa400.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 → block OTSBitcoinBlock must exist at that height 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 0x90d3f04ca2c24d0071512606822b939cfac60869159105f3c9a5344c61d9ba16. 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/TCJPU2333981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a1528982e01ad6f5599a22a24611d6e8c5c32e6dac7e14413c8827e3346616. 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/TCJPQ2290712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc223e8499c6468ffa367a87b20a79bca649c87c84c7569acc0e678a8e60b81. 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/TCJPU2333989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315217d90c593bf58d06b78c7a1dc176f7e3b81dd927e2f038c657b95b237a89. 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/TCJPT2203942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3aa48245c574c9c260b487b2783c69b37dfed85814e4e75f2000c4374186c39. 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/TCJPU2333991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d7280b8e6e976c3926656ec0e3125d360e56a8a3192a33547cf0b580463df2. 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/TCJPU2333994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f97aeaa819ed3324b30abff9338157ff62148c8102c304ab3566d16bce11860. 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/TCJPT2201210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9969488f1d75b83f78ff04d09c76d868d1279508dff354c252f0365303d4a9d8. 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/TCJPS2226599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d4cf013066400be37a5595c853e55df5e18fa680087e7b0cecc491c6dd9ffc. 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/TCJPR2216589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a1528982e01ad6f5599a22a24611d6e8c5c32e6dac7e14413c8827e3346616. 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/TCJPQ2290712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ba69381176e4615e1828516cef2730a31326f51b36c8a88720817f20d7c0bc. 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/TCJPQ2142786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2d61adacc44381a82caf9f70faea8971c49cb44a8b0a0d79269c65170256fe. 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/TCJPN2033581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069701f971f912e6528ef00ec16544aa849d88a57e0621f3154d235aadef42ae. 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/TCJPP2120323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b92d11c69ff5db916a410465ab2acfe451e934393a6be6d905f7fa568a77e7. 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/TCJPN2168365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fef27e5767b164b857fcd8e5d1bb98851c213c52c8afaa01c2aed59004593e. 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/TCJPP2120336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cc6f7e4b8093dc543610b598b1ee35a7c2e0a6a976b3a2e07a5afbf99b4626. 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/TCJPA2479310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93dd32a22e1066d19fd3038242b7daeea0aaa13d6756dce2d22c17550f6cdda. 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/TCJPB2427927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ad30f16ca64b8ba02458020ca60fe7d23433048fd6b66fb4ae5b0a623e1bf6. 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/TCJPW2316286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4d03b31be4e38ee67c7eb660c16f391a21e418945da9b7efbd6ba677dadc0e. 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/TCJPX2309379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf33d2d59f869962485b1a9bb8d672d68f745656b03954ead6c636fc6a63e96d. 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/TCJPB2421889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aa6e0d864131759bbfbe76028f6b0285258e47115089c64b8cd12fc8204744. 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/TCJPB2427963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088905e1903c7a0804f458f1ffca1b32c362deaa9ef11fa9f3f6c3c690dd0855. 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/TCJPB2427979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e18cc922d568d4667712f705c43bcd4066244ce3ce2dc4034f4b1ebef29aef. 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/TCJPY2325504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744214eb45bbafe31b2b3a93f21bdbbb3acda4bb087e280fef88e2b3b2b75928. 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/TCJPB2427986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1737cf08a4b694e9534a4d000372fe8d555a8e8843c3885ce9cd42fbf05fa7d2. 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/TCJPB2427996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d24bf930beeb73782024816ebe981b5e9a594563b0d7db1065dbb28d08cf08. 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/TCJPB2428004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8cc994e9743dc7ccf7575389350c2014f5d3cc6a9f1e61b0f81f6cf92f4bca. 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/JPVI02202593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ea8a5d53b7be2ef4b77aa09a35eb939c27c2a34664c99144084de29691247c. 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/JPVI02200439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c222768d529ab55cfe798d053e5a50608d812f5450e7d6b3e6a356536bca78. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPVI02201093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd4270e4847c2a0dde534c4b3696e391ed529973ea056a6614ba39b9181c447. 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/JPVI02202595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159f06fc48b9ef62969ee189625ad7c048efdbf131dd1e3ee874dda571a12e22. 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/JPVI02202596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4a5d8811d912d79d13f4fbe60203cd446c4241e7943ba494bab9dc316f6b15. 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/TCJPT2267175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecde0cf6562c2c66f5bdd30f134b4e106f5aec687cb899f53ffd8cb1519e0163. 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/TCJPU2224193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a6dcf7b130a997f7e4113eaac15b05bf70d071e81e9d2bfc79d835bcd1c02a. 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/TCJPT2285916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8736b42c76395106d1bc07942514002ebf6c48e7deb87ed4deae9bb853fe4c23. 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/TCJPU2362910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7612bc0c8c0ecca9e2d26ee9b7e2b4b2877222d647ba3db0e2fa98e2f55bd14e. 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/TCJPU2362914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe893ed9edbb416ce65301c8c216621a6fe8d3f5129dc986cca3a1531496eb95b. 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/TCJPU2362929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe75696e07d3227845066dec4e15d056302206dc5b212d2b1b24d268566f38aa. 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/TCJPU2362941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdb393f4f83257f07146cb73f0e7a6769e5d2403ea62766fe78f4e8d5bfddb1. 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/QZMEN2001788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff71051dfe8120005a7f9cb00d64be5710d6285b75a9f00da66365fe34139394. 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/QZNWX2184177.