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 0xce797077e7a3d2d08907303487eb44f63ea12c8bf58c9fbbe370d31f814dd42f. 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/f349923d-6911-4183-bea8-3499b0426823.json and https://artists.proofprofile.net/proofs/artist/f349923d-6911-4183-bea8-3499b0426823.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 0x3389d392344d2d2bd945f3c06ac07df480cbd2f15bc3dcbe5e1edfe5151a42d2. 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/KRA382006255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948f7b688a89455665eb7327776e33df69c969486f9544aeb989cfaccfd33aff. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/KRA382000057.
Hugs & Loyalty (feat. Reddy, IV & Owell Mood)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa2e1d03aa7929ac213099e59f556c1e6e5059b67aaa4be4c50766ac510d9ab. 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/KRMIM2246090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404dba9ce165fe279ebfc83bd469b5f5974b661b3c1b15f60f6c084b9e866298. 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/KRMIM2100826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c2f69f7df74cae97813f3e2b1bfac4a5502e59e679389a729203ddaae23658. 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/KRC392000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ed5aeec3c375327d5fc214275a029a51b2fbde69c75309f8e60a7edc455c32. 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/KRC392000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0050b5249fb988fa027cd20da89a7c28bf23faa6da6c77b037dda87d39e077ea. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:49:17Z), 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/KRC392000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf25b132ee9ff03c62b720139c6095762f892cd31bd51854bd7da74252bdedd5. 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/KRG072000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc5287887bccf5684f30fb54792de47fb3a75762b7f62eefefcc503c97f69b9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/KRC391800053.
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
The Greatest, Part 2 (feat. Los, CHANGMO, Owell Mood)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e4d1a49495a37e77aee2356f190b6bbb1f862bf1f1ba07f21b36228c892dff. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KRC391900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88751b47421ea037e9c3ee783625197da795e11807a5f623888ffab40b84c517. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/KRC392000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b59997f9d73f5eb109abd684155be20da3efb151f97403435cb0de5bbd53b8. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/KRC392000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b7f11db8ced9052700c697413022691138f79ee612832e83d961258212a992. 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/KRF632104701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df8269fde154fc770cf369acf5d25a739bc3cd0b18cc70e9c55c89563389ad0. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/KRC392000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1507be3de986be6f4c63e8b4eb8986c4e46e0cdf6b295839d45259d4f7691a35. 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/KRC392000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa083a29cadf84244e7daa63a0166e2bed6247a49fbbb7af9c66be52563aedb. 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/KRG072000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32b69ef7698a9d56a5d01afa40cb4312c01f61b5b192f552fd363b913dfe310. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/KRG072000005.