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 0x53692e0adf6c0a3b5d0c39e2564caf86fd4af2eddbab846bd0381cc1601d4a38. 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/65ac4ffb-f7f4-42a0-9388-f81b7c9ff4f4.json and https://artists.proofprofile.net/proofs/artist/65ac4ffb-f7f4-42a0-9388-f81b7c9ff4f4.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 0x782dbcebb69a801c2678c9d0575b49b4a57a3e80e534c979f1e1dbbc572bf046. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/KRMIM1809579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95453a84b677e206f6745d3626ac4ab15879f2cad0e05c34636017820e6ebcae. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/KRMIM1813828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d1c06328d0fc9de48d91c975ba8c0d383fa38c99d5ecffff4693c72fb9b3d8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/KRUM72000726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b129e8f0073cf78b46f8caaac267c3601fd2e7dc47f28a1ac19d830536678d5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRUM72100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cddb7c76ffaac4ccddb85ea95f5697e61c61109969643f9e59d786a74573d5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRUM72100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9355011ca5847f0fc91ebc97bb3aa89200ccf5c60b2f1e6167aec1c5be2ecf86. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/KRUM72100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fd7db8238933c24f15834dd64cd57480b598b60e4df7e46db486e5130bde46. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/KRUM72100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0123c28621e2394fc02711adb452629e880e2923f9f854e1d9562e68083db419. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRUM72100131.
In Between Days (Single from Pachinko: Season 1) [Apple TV+ Original Series Soundtrack]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6249d4df4e95b71f913bada36d138e990a22b79c9b73a7a06e8e59d0df33a05b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/KRUM72200348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7e6cfbdf374a9c44fd113a5f86defd07611cc9a0e4350db07e09abe2e85c2b. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/KRMIM2451366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432a57e8b43a43cd5e4f51b9b3aa3f3e4369da9384c5e7bfdc795a9541ddb3b1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRMIM2469033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c37d4a78735ad240e079f8752e7da261a8befc3563dbfe28060591bb6e8e4ae. 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/KRB472502789.
More than K-Pop: Korean Indie & Soft Pop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880c014d7ad84e2e3615f634e538f2bbb6f70fa3658b7d103f9dbe310f32652a. 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/KRUM72000914.