KK, K.K., kK, k.k., or other sequences of two k's with or without punctuation may refer to: Arts and media KK, the production code for the 1967 Doctor Who serial The Faceless Ones "KK" (song), a 201
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 0x1961a933aca9e92efb1df8755c8019d43d9330b29418471fb38eed48087dec08. 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/4e2ae21f-8b9e-4896-8e1e-c049c0d0d657.json and https://artists.proofprofile.net/proofs/artist/4e2ae21f-8b9e-4896-8e1e-c049c0d0d657.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 0x54cfe22d498c98c3e9b372143dbe661a070e324fb9425357dca323cd4487b1b7. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCJPE1618363.
The One who creates everything -Dominus Deus-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5405441be9f9c6f782c522b530ecc2641a41e469eb9f9045d2fa492118a19909. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TCJPR2243276.
時間、色彩および空間のコンポジション
One Holiday Morning in Summer (jingle.ver)
Park, Sun Through the Trees, Mountain Climbing.
I Want to Travel to a World Like When I Was a Boy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fb86acf032c04b985318ab605f19f1f081d54c8ff8002a93db45a64c2504d3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309645dc62ed9b9b5ad74268883c7cb9a04c9714f12f147b2d7e7bcbbd03371b. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/TCJPR2243252.
少年の頃のような世界へ旅立ってみたい
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993d94f47d10e34780098a8ce9c1036dc85532f769513ab6a8c79e9cf20d3d3d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCJPR2243309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895ea0a80b08102e7fc0233a15cee10d3fc53df6057931efa0bad3e930ba7a65. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPR2243303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76fa57ee90b8e6b61913216bb73c79a70e7696ebf337fcc90c6d2a70180ad78. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPR2243277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bd1609f34594ee74c604a20e38e91659fd1198dc328866da22726146acf9fc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPR2243331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895ea0a80b08102e7fc0233a15cee10d3fc53df6057931efa0bad3e930ba7a65. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda1b8704c188f8f024af1cca721919fb050dbb0cd2923960cf470db2b55e942. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80271fa9def1ac5c20ab84e9aded7f5813e96175b82a6b03027f3ca9e95180f1. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186a80914ca3d335c0a7e779012993dc0bb7490115c6c4c22a26c81c5da40d89. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fd158606f7fccb009173f085b93086d94ef71a60d7fe28d9fdd2941c30418a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/TCJPR2243274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe571b714a03c1e4d1b637c063a9900ac046dbfe93f0d9144a1fa576b0dd6858b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243329.
A Space Eroded and Distorted by the Curse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd0e0ba51c5d2f51c94360a118d11ec026e0950986628cf2b6b0e0e74c256e3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCJPR2243247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a173ea0a353903701c6b472a9370bbef874caefdd049b04a2e68fbe4e57417. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPR2243356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282e68c98aee4326aa834b3db22e33db820c4bdd92210017171c26c65c1d151e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPR2243299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309645dc62ed9b9b5ad74268883c7cb9a04c9714f12f147b2d7e7bcbbd03371b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPR2243252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766ffbab6f63e4d8c01c6f516a7580c1e254dc6e11a2b4c59e090124f781cd21. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e05098f667eeab54790d01ed832fb7458f10a4b8c60cd58112dc19597a5ab3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCJPR2243341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b38ca13925bbc1b69df4d00a52591cac7899ce6ce8944b9055e65b1c3dc34a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCJPR2243316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ffa73564b7de20e4ab953fbb6acc652733d265f6fcad6bc47d169c2c47817d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPS2208995.
Collection of BGM with gentle atmosphere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1be6ae230a63f4d0823a01757978719ca98543aef5ff4e31f881599e5d33e1. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/TCJPS2209000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a26a62650517956d0a03503331161bdadff7fd78db4e67a286c866cccd873f7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2293007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb8f88eb20b977ee8c5261ddcc61ffdb8d2d96c440be67463fa384b2c9e86b4. 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/TCJPW2397030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9156e8c6754b5aacc19e4bd705364158a497ac8c4ee084d8a316c324ffa4a0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPX2381856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e887a530eafb71e853550e54fd3d89f4306571bc8142a290b8aaab44dd65d2. 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/TCJPC2481799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd32789cb60a910d1a3656ab39596e1387f3b64cd2e0f2aa555fc28cfbb1f89b. 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/TCJPD2536210.