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 0x686d49cee2e01739fbf5c92d79fa568f9a64135425446b38937bdd3a7658fb9d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45d97302-c364-4cdb-8fbd-0fbd2d3827d4.json and https://artists.proofprofile.net/proofs/artist/45d97302-c364-4cdb-8fbd-0fbd2d3827d4.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 0x8f7d3c9af98b3a60be548503eba586068e1d924c54a0fccb690c4677478603ee. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA900400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c9ebadf5d30210ccefd1d85312ef3e730bb5daaff0aa87cf4d563e32ef5d0e. 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/KRA900400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a582a3481fba07dd370fbe94b73b8fbd354460563901e38643b00b07e37d8d. 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/KRA900600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a1adfa67c83d20836a5012ad9c037fc3ef0ebc08567d314de0b29a4ee1d611. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/KRA900600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1133dc9e0eb47498c79b383243bed962217eb2de719d2711a0610d3d820e3ece. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/KRA900600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ae1ff735a69b38b241ded508314f0a28108543e18e79940edf1af215b124c7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/KRMIM1814905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c7671c07d57a0bbfb7de07b05f5ce4b47371d7e36109db366dc5c7d580f09f. 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/KRA381002285.
Nine: Nine Times Time Travel (Original Television Series Soundtrack), Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6251481db869d0110e9035a331a456586234769f725120dbe41220b81a647493. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/KRA491300197.
The Producers (Original Television Soundtrack) : Preview 02 - To Be With You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d12c0c6cb68b636e7c6d7c3f2d8e23b87fa843898f35d3de33c191868bb06f6. 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/QZEKE1878660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d80e3a46de1928d52a0cdebad1a19b20fda8101af1125a8d4e009193735a08. 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/KRB471800688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90d4876df29ad1b43d3900a5877b008e8fdf454042898b0805cda9e169e920b. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:33:45Z), 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/KRB471800689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c9eae6f69ad1d08611a73a9287f8819bd5b8fe326f1babafa33bef55d09431. 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/KRB471800690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7a7b1c337ec24890a7467134ddbef75ceafc108142d3da6cc8e559c47bd519. 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/KRB471800692.
Where Stars Land, Pt. 7 (Original Television Soundtrack)
Where Stars Land Pt. 7 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0012510771c609fd033cdbaca06146bfb05371d9ed3e813645c37cf1cd5a57b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:52:55Z), 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/KRB920901797.
4월 (MBC '3.1운동 100주년 대한민국 임시정부 수립 100주년 특별기획' 기억록, 100년을 탐험하다 4.19 59주년 기념 헌정곡) [Original Soundtrack]
4月 (MBC `3.1운동 100주년 대한민국 임시정부 수립 100주년 특별기획` [기억록, 100년을 탐험하다] 4.19 59주년 기념 헌정곡)
[Vol.33] You Hee yul's Sketchbook 10th Anniversary Project : 16th Voice 'Sketchbook X Kim Yeon Woo'
[Vol.34] You Hee yul's Sketchbook 10th Anniversary Project : 16th Voice 'Sketchbook X Kim Yeon Woo'
Bloody Heart, Pt. 2 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07ff430dd17ebf9ce6c225cf43edd79f5be610e1c916e1920b34d822126bae5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/KRA492200425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86aaa866d0c1b901ac61efa1b56765c19dfe26afffdc00e29a5fc8a60087506. 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/KRA382050028.
Do You Like Spring Bear? (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9fbc1838c47289df2b9c6863b3ec677482f887ae6b9820b0c3a1366af788b8. 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/US9BP1250222.
The Producers (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7eaa74c70168d58cf2b5ceea15779a5e56b6365bdc5d7a371d980da584d364. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZEKE1878646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf56f482fc2bda62f31d2bcfc60005cfe09179c85953995759885c471368271. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA490400034.
L.B.A (Feat. E - Sens For Supreme Team, Kim Yeon Woo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff4de861818ec0534e19b7143481a944f7593da0b273c72495608677f7db4da. 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/USA2P1341346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7826257a2027d81c760e33946e31082029355a1d0dcc2e7823068a4aae81d43b. 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/KRA381211355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76e7a3a74c66f742a37e9438a5262c5059497c5540280a73b1c5552623d9b24. 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/KRA382204972.
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 0x5ac613950b1bdfb276eff830b96e47adce233ff64c1a93b740894be8ed6a351a. 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/KRZ291611904.