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 0xccc2add06033645e4c634478a80f4b29c668258b24a273f1d8783c64f151dc15. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5dc83b8-6146-4aeb-8e03-5bb265c7f937.json and https://artists.proofprofile.net/proofs/artist/b5dc83b8-6146-4aeb-8e03-5bb265c7f937.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 0x89c293738438b03f30587db880f0a8a9b0aec0ff013edd4b58e954faca4f0013. 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/CAJMI2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b0fb7e62e0c4869a132d711a6af4ad97c6bf4982d7553243d199030e0bab85. 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/CAJMI2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec30e724084439d4f465917736c6dd91bbfe9a0976bd153408d1295c5dd7c5a8. 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/CAJMI2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe212e60f8e93e325d07d4ae312fd39045e171c6b285cec4dd18b8612bfb5b0. 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/CAJMI2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57adb7a1c87ae1680a04cb35e9407741cf1992124da82e568e06c279ce8a19d9. 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/CAJMI2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69fba5f46602d21daa3c51332bfd6f6a3fd285e4f1ba78236bacd696fe6f55b. 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/CAJMI2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704a9a673ad59729e5342fbcd577daee7d6d6a49df0f1d35cd2559b7f3c08a6e. 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/CAJMI2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3372f199ab6de1f9d1226fa9b2584e7f04a800f2c48ebba4e7d1d666c5d6220d. 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/CAJMI2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac910216eea07179790298199e2626ef751672d48c0d29dc2ac9f3aea42b2a70. 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/CAJMI2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3511eaf0cc559aea0ad0fb588e6453344785dfece8128b4741e5e382ebdd7c41. 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/CAJMI2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42cb0039a2d9bb53ec93630d9fce0c7aba7d3fa617ca1b5c71b6b9e0bd39a20. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAJMI2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18ca69bda00683cec419fce205807cb038e588c183f26e200d5b862b8749ff1. 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/CAJMI2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79e0de0c672763db7f841819fb4d308303bf28c7831814091bbcaa4b06f24be. 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/CAJMI2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50caae38f078c57d6f73f841e842b33a495d093ef3666d76ccf464bf6429da73. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAJMI2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4790c8989cc7140d2a9195e13b12fa1b2b476616cf105abcad5aba43e07257. 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/CAJMI2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d79b7a04e3bdf61cdfb8766ffe11a7fcc60b8c60e16464368aaa7d3c279a047. 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/CAJMI2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f0bbbcd0ec3cf8fb49711c36696f005bec75b33d91fe9f4b09870aefbaae51. 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/CAJMI2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d2745dd7fa445de792b59cbbe4ffedc2e0e6a2bbbbe12dd8a0879d3ff24289. 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/CAJMI2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5829386ca9c3a5973c2f74bfad3c72824084d9494204a6eb32a87b7bb11ea0ee. 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/CAJMI2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b0fb7e62e0c4869a132d711a6af4ad97c6bf4982d7553243d199030e0bab85. 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/CAJMI2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57adb7a1c87ae1680a04cb35e9407741cf1992124da82e568e06c279ce8a19d9. 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/CAJMI2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3372f199ab6de1f9d1226fa9b2584e7f04a800f2c48ebba4e7d1d666c5d6220d. 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/CAJMI2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac910216eea07179790298199e2626ef751672d48c0d29dc2ac9f3aea42b2a70. 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/CAJMI2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec30e724084439d4f465917736c6dd91bbfe9a0976bd153408d1295c5dd7c5a8. 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/CAJMI2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c293738438b03f30587db880f0a8a9b0aec0ff013edd4b58e954faca4f0013. 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/CAJMI2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50caae38f078c57d6f73f841e842b33a495d093ef3666d76ccf464bf6429da73. 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/CAJMI2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18ca69bda00683cec419fce205807cb038e588c183f26e200d5b862b8749ff1. 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/CAJMI2200019.