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 0x15e7912ccbf0b3104f859b3cccfbd1f49637dda22f3b43f489b474df1c1f8699. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63411868-a3d2-473e-b5be-e6ea1fec871f.json and https://artists.proofprofile.net/proofs/artist/63411868-a3d2-473e-b5be-e6ea1fec871f.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 0x156a5b3a291cdd2692648f5de12c963039d3ef3fdf61e885d31fedef47457179. 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/KRMIM2469435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc32fa96b789381cc6ae780b8fc6fe310456d4d9af1ac05f64e4f13c24402c6. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/KRMIM2469436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5767581430a6a7fc75231989e5f6c3028e3ea522761205dffa85b49fd70cf2c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/KRMIM2469437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b645f47a189d2e65d5d9a65f0fa0e54b815e885417fc015ea0e984fa458bea. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/KRMIM2469438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a13ed6602467b184dc579cc9ee9865bf0aa4b5cbdd0dc4b0b0114321f7d1711. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/KRMIM2469439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9e4996f69435d1cfbf97409d10c0fbfa5a12eae090780fcbc5241f51f718f6. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/KRMIM2469440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4753bd83914d4e3d4c9826fd90ff9a12b17aa6d78e2844cf169f934c3de9989f. 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/KRMIM2469441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00c12db361965c3fedfa0ed66b26c4e24576768fdace259a572b9a356f18a36. 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/KRF632104013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8529ca1ebb0fc595124b9ec944da3fd423f26d75956ba25d510d4be4be0f1b. 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/KRMIM2507804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc7be87230cad49ee1a5c946cc6004bab6b3e2070595dc1583932adc5da6eb2. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/KRMIM2426904.
Drippin' Tear (feat. 박현진) - Sped Up Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a319d7f39a2c6c18fb5398fff6e2bcb0410854a914af237eb823c65ff9c328. 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/KRMIM2426905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76969f90ddcf0d5587bf4a18a7a6b9c55c910d2b92264725a2a2b8984c4f59ea. 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/KSA012247391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3869988a4b9fcd100d143285850bba4c512ccfab2c9d9962319827d2b2e194f6. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/KSA012222943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf524fb2da6712162fb82a22c2dbd069438f2b801ed35a99b57c7a402bdd632a7. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/KSA012222945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca8b0f912c22097cb7fffcd1d2261ddc502abc2699e3093f33d7a5e1db13b2b. 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/KSA012222947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf08919016713e794e69757f3002a444d7751f850d3c3be08f79ce43247240f. 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/KSA012222948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d1aed47c912866799ec7efc48ecfb98391f74b7430d1f002af75d1ac2b1952. 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/KSA012222950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36c3059f0ab734d407fb4ac4f32a110f3e80996fc7d155ae2c6d48725d04c16. 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/KSA012212701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c888940e0a77110647016fcdae2c683bf580d989e327c4f050a391893e2953. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/KSA012169257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95378af3f26cf7757d8afb01c8daca9afd846914a3d4bdbee7e8930c4ea0cfc. 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/KSA012149509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc22b902d6795904a820d41a2caa21b51fec1c94e28c844ffa4cd2e7082f6806. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/KSA012149510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ee1f46846a97d37130a3f3a5ae9f061e8523c75db732f1f3a49934f2a67234. 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/KSA012149513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80949e2eca20cb62f1031c86b986df53136c0991bec00fd4b5ca7e6d83ff227. 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/KSA012149515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74da6c62000831e0734a9b7dae457e68c72cbbe0febd6e3e54faa7b65a488f9. 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/KSA012149516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6d24066c22e0b235505a663ffe3b9667caf4938806573ab9bd2c7fa36c5df6. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/KRF632101015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abc1e31450776ea3b98ed507f9dbaffe0c3b78a9d10fca8dd7ef6b9498423b8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/KRF632408184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bec31e18059195d204831085586c304068e33d36ae79694efd63df71923003. 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/KRF632408185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0808527a843af3acb9f6f633abd9e5f0737b8615c838c55b84c076eed96f79c. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/KRF632408186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa17e11e054e9975aeadbb8a4daecd7cdb04957759c5bae8f8c21f9b1456e90. 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/KRF632408187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4eef3699472668f59bdad5124691d76086d52fd90208ba24a19a27c78ae719e. 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/KRMIM2477675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bc8ad4bfd7afe895e365398af6930bb3b4b1fc34aeede8bdc75372d3acf4f5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/KSA012296446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a494612bc0e1458b4bc7ab309447e22112a7399c261e17b39766908cc2c04f. 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/KSA012296447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b76b4bca2939bc38a3ca06aa8a2f54512077acbba4b9e482a5fa77aaf5bda8c. 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/KSB012332850.