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 0x3bcbab131e695bbe6a752c30aaa61f48440adc5f8195fe09e44c9c3b71fd900a. 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/c7f9b1ea-f33d-4b27-8d96-bd6ee84ed816.json and https://artists.proofprofile.net/proofs/artist/c7f9b1ea-f33d-4b27-8d96-bd6ee84ed816.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sidorim (feat. XQ, Bbanana, J Black & J Pink)
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 0xbbb21ce2d30dae70ea0b746817d9f8e4775ea9dab5e3276442ee261d16f9204f. 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/KRNAR1708382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8227b7f46651dd78fe1a4a8abc6a5d8b109f8c20bc8bb470dd14e709138d4253. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/KRNAR1803275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbc8155ad5d7c245cca0b02a0991a260d48870b26e3808b6810d85c7e177fff. 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/KRNAR1803276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcfca9f861b5925c8d2ff9330fa5a76a15e179cf906daa5f03103c7935401b3. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/KRMIM1807608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a3218ee01260816926981e25900701a7ab574e73725701905ceeb30c0528b8. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA491901128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad986ff858608895990c568626d79a9e63f3a6e2494d12add91b497244389abb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/KRA491901132.
[Vol.41] You Hee yul's Sketchbook 10th Anniversary Project : 21th Voice 'Sketchbook X Muzie'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e87b98881e547b16577ed0d9a97e4b97ad12a8f91cc3f46b36d915b9aa301f5. 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/KRMIM2130296.
Love Next Door, Pt. 1 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e4dc0f6965ad7d2008ab7aeb31f9272a057d25a2a9f03e11bea5fb33c7103a. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/KRA492400840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86aaa866d0c1b901ac61efa1b56765c19dfe26afffdc00e29a5fc8a60087506. 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/KRA382050028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1467fd95988c8e5f650c9ddd7371974aee7c72c4b293240937d7fec00a23d980. 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/KRA491700116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1467fd95988c8e5f650c9ddd7371974aee7c72c4b293240937d7fec00a23d980. 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/KRA491700116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7762dd2da0154e6b6c2c02b35d5d4351d64f52178773f9a733dd3053c7ac3784. 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/KRA491900658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489c814fff0f14e05f3c8a628ba74c231a1cdcbb2dc75dbcfe35f4d90daa58bd. 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/KRMIM1804166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf83eb3207f43ccb10871b53bd3b742ec7f37cc88bc05ff7e302f0e806e51c9. 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/KRMIM2163279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d99401fc07811e9aa7ec906f5fd85417226b2c1d6254240cc18cd2b04806ec9. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2163280.