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 0xb1edbf2cafea5ff5e1d061590219d548f76ca70b844e17f74edeacf21b1d222c. 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/e750cb91-084c-4824-a8ae-f70ba8fa9cb7.json and https://artists.proofprofile.net/proofs/artist/e750cb91-084c-4824-a8ae-f70ba8fa9cb7.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 0x96f2299a61077434c93c6bd1df2e49ba39c774751f91b555bb2ed622a67aa25e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/UK6821401083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62edcca79314a0d9ff53346d8715c06cc7696cbae8b7e0bd3e7dee227db6ea93. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UK6821401086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f2299a61077434c93c6bd1df2e49ba39c774751f91b555bb2ed622a67aa25e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/UK6821401083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62edcca79314a0d9ff53346d8715c06cc7696cbae8b7e0bd3e7dee227db6ea93. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/UK6821401086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb6cf90f181209d838d450f7b6512d42bf36e800dd411b20e036604935deeb5. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/KRNAR1800516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61185fa49020bb0b5b7b1bd01081084ca27c6b5b415789b188631f0e1408cc95. 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/KRNAR1800517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35cfdef533edcdd903f0dfe865c8bad9acdf29ee9e4195dd4b7512de4fa918a. 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/KRNAR1800515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb6cf90f181209d838d450f7b6512d42bf36e800dd411b20e036604935deeb5. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/KRNAR1800516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84e5d2c21c669f4ed35350172c7a221dd18cad0de7a397ef9f33fe0126c5d34. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/UK6821401333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec9bcf1002b6a97288a2cdf02bd9d735ed9a8d8c6ceb9902c80a4b7353e0c16. 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/KRNAR1802223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad1f25019cf14da31a49fad6f5d2f0d6fbceebaec6faece6e2dcf52d1dd63d2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/KRNAR1802224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec9bcf1002b6a97288a2cdf02bd9d735ed9a8d8c6ceb9902c80a4b7353e0c16. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR1802223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf7e3ed8fe6fd88746728b4da584e3dcc7bc50029f593517def89f96bf4cc05. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/KRNAR1802226.
Shine Your Star [From "Mr. Sunshine (Original Television Soundtrack), Pt. 9"]
Mr. Sunshine, Pt. 9 (Original Television Soundtrack)
The Guest (Original Television Soundtrack), Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feb2557224620ee3df4215647dff7bb286f386eee89e386cb6ca94aeb55e8ab. 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/KRA491800911.
Somewhere - Memory Version [Instrumental]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf291ff7a5042fe2ce699b00b39ee0f767f463c254dfe7a04943d7a106b112d2. 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/KRA491800912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd6a30a385b352cebea8c4918703595d54d62ea8b691028206f0f3d2bd3c4e0. 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/KRMIM1904658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd6a30a385b352cebea8c4918703595d54d62ea8b691028206f0f3d2bd3c4e0. 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/KRMIM1904658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934dd2852930a802992373d22d3329a451322b56e238ed428892372c5cc94af5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/KRMIM1906816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cb89bdbe0bfb4f10b4fb7de1d7041089487b14d8e7fc0691c6c888a9dab1cb. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/KRMIM1906817.
Search: WWW (Original Television Soundtrack), Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc286965cbfd274777d8c79db92c1f87afb5ca94c56341c8530d0e0bac1ec34. 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/KRA491900394.
[Vol.32] You Hee yul's Sketchbook 10th Anniversary Project : 15th Voice 'Sketchbook X O3ohn'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252d27998524120398b447e77778f9c4f1840f224667c288e3187f3ad2fea170. 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/KRC082100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1884a2e797f56f035f8e5afd9401290a5502ecd4da97e025d51682f167c1b9. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/KRC082100004.
Jirisan (Original Television Soundtrack) Pt. 6
智異山 オリジナル・サウンドトラック Part.6
Link: Eat, Love, Kill (Original Television Soundtrack), Pt. 1
이상한 변호사 우영우 (Original Television Soundtrack) Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16557dd78c5ca8dc5b6f9b918b56176897dd4d1ea84cdbd07adccf11282e145. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/KRMIM2241497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd40689e54b2b95c56b3abdf0a853c3a04e3da18b0fbfcb0ed120c519c16e9d6. 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/HKG732262112.
ウ・ヨンウ弁護士は天才肌 オリジナル・サウンドトラック Part.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa250ae4f8d3b7d2302d2380c339a3c9d1ddd17621b4286aafef13bd7a02dd23d. 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/KRMIM2241460.
In Time (Seasons of Blossom Original Soundtrack)
[THE SEASONS Vol.Ⅱ. 3] <AKMU's Long day Long night> ReːWake x O3ohn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7e4638f298dea141cc2c626580a87a50c391c52a6f10c8a71026b508639481. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/KRA382320836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f754f11280b5270f0753fca50f2ee25f00cfc3d3c4f296b284563e8d38c3151. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/KRA382321352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9f44da8d3cbc9a1de44859ace94e57052534aa1ff5c326e5320fbd4028677b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/KRA382321353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8439799d28e63f6cdea2ca72299ac2b617786b5c5c83e05169db80142fa21a. 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/KRA382321819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67011d9e7b30cb0efdc698ca8f8bc0428c90e2477699976d1c2af15ad6dd138e. 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/KRA382322717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6199e23d336094db0d6eb4ba42ae33d47aac3f9b94c0cca383e96ff46a36c119. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/KRA382322718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c9073f89a42ccdcd0aab6f6a21a03c99463108a9163850050fc056e3a6bb54. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KRC081700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd142929e14e01f187de9304127e0376c442229eed8df01c264343707ec6fc247. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KRA382208317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996bd80059d2ee08fc5fe0bc26b5acff8b4d322f4ad750cfde00041381743f27. 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/KRA382100432.
Extraordinary Attorney Woo (Original Television Soundtrack) Special
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa250ae4f8d3b7d2302d2380c339a3c9d1ddd17621b4286aafef13bd7a02dd23d. 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/KRMIM2241460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16557dd78c5ca8dc5b6f9b918b56176897dd4d1ea84cdbd07adccf11282e145. 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/KRMIM2241497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28042e5bd85fe2199d2603a9265888ff4bce7d62f65baf03c1a200f501f733fb. 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/TWIE12300026.
Link: Eat, Love, Kill (Original Television Soundtrack) Special
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7233de70dd18f9763f9d056701c8cdee75ae24b51cc2e586f53a3af696d2a6cc. 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/KRMIM2224104.
Mr. Sunshine (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f01cc9eb4fac9ef8ef05a48de73c15196bd362180b8164ccb134e83f5ab34d1. 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/KRA491800738.