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 0x7c29811ea7c0b58a10bd6d8a9341ef8dd931f625dec77a47b754d47da5508b70. 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/ad765622-625b-491d-89a5-fbbdfe953b1b.json and https://artists.proofprofile.net/proofs/artist/ad765622-625b-491d-89a5-fbbdfe953b1b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
GENUINE MUSIC 2021 PROJECT VOL.10 - Try gonna fix you (With heydium)
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 0x2c9e8ef876a93b45adf77f3b50436d221f641603d4d3e25b15e657617ecb36b5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2204266 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942f09370da7f1ba715386e3f2997e1684b576c9851dbe49f27d517ecc432ca9. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233988 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe541a985188bda2b18d4f60dfb21f3dc9e1eddfc8958210fb73c7b78b80d425. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233992 — a six-check JSON result.
Love is spring, love is summer (feat. KIM MI JEONG)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e8909ce03b2f709ededc504829077caf8f98a88a806e5ddd04161be905b095. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2307702 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88bead32d98e21e180dcf5c6f3aa15211c5c169e5cbad18f744c5e9a3e281f2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2341604 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16508d16bd0db980852f6dc6e2a2ce66048065ecd8d0b667e7c69a58656d078. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2341608 — a six-check JSON result.
Still looking for you (feat. Han Yo Han)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032ca4d3118bb80b835c19ade2900fabe455886dc1f03ff90eaa32598f2efdfc. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2402590 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eb3369d2389dbe692a841eb7f6481b3d0d596e44facc3e6b0dc44b933499ee. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSA002500239 — a six-check JSON result.
1 Min 1 Sec (Odd Girl Out X HYUN SEO) [Original Soundtrack]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2459dab8e4ab14cb1fd6f3d7a422014e5ffe40a275aad7dd57510914853a9cb9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2521776 — a six-check JSON result.
Reminisce (feat. HYUN SEO & Add Blessed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3046ccc9b175adff028410d09df8d7afa9d10dffad5b31884cbe8b33122c696d. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2212138 — a six-check JSON result.
All my playlist were you (feat. Halsoon, HYUN SEO & Franken)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb044bc86d46a5b9379fdef7e9550226b38d19dcb67cadf0408eddb9071e54ddc. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2334091 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812b387ad444751a688492d74626e18a176f2c8e04768c508054460e6206780c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRG032400461 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf817bdca55fe8a49a9c0962e7a2cd4e397f2ac70f607352a1fe025d4be2e01f0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZZA0P2313286 — a six-check JSON result.
The first snow (feat. HYUN SEO, BMO & TENET)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efb10f30d139bbe3c54a35f8cc565390f174646955188cdb225cdfbe02719cd. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233048 — a six-check JSON result.
U R MY EVERYTHING (feat. HYUN SEO & oo kiki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda605d857776959fe924beeea2028cba9342598e14edc07632ed404c4b4391e4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2307850 — a six-check JSON result.
ARTIST. Tmlm - 내곁에 (feat. L, Lokid & HYUN SEO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7050ebfa1510b64257332e582bd54bd87cf19eab8d7db359768883d86f75d3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSA002202323 — a six-check JSON result.