thumb|250px|October 25: English archers defeat larger force of French knights at Battle of Agincourt.Michael Jones (4 August 2016). 24 Hours at Agincourt: 25 October 1415. Ebury Publishing. p. 315. .
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 0x0a8f85cd1c496f61604de173f69c3d53fd9df9837b93c7f589930d1def620002. 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/1c319dc2-656f-4545-b8dd-caaad51de31d.json and https://artists.proofprofile.net/proofs/artist/1c319dc2-656f-4545-b8dd-caaad51de31d.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 0x71620bfab8a2b48803313ab91a3a6c821d3550aef1a04dcf6f53be394e12807f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRNAR1702157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67965413ffa7e59840ca065cc28f9b9e34deb5bd52de20960d7567e3809f466b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/KRNAR1702198.
겨울이 온 것처럼 말이지 (From 'Hidden Track No.V' Vol.4)
Where Stars Land, Pt. 4 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ea33166b24f9d6bfd5d13bcc5fa3f03721e0186c80bec2859223d63d2024bd. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/KRB920901820.
Where Stars Land Pt. 4 (Original Television Soundtrack)
Her Private Life (Original Television Soundtrack), Pt. 5
Her Private Life, Pt. 5 (Original Television Soundtrack)
The Secret Life of My Secretary Pt. 7 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077691a0b6641f2e06ecc086177b8ccfdd2303f973d004e6ededc348ed008325. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZEKE1883221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e36d918cc54286823b7ce60e715a228709beffccda12cede0546d8bd9a8eb0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:00:30Z), 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/KRUM72000534.
내가 가장 예뻤을 때 (Original Soundtrack), Pt. 1
When i was the most beautiful (Original Television Soundtrack) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1358a1de303cb57121372756ed36c4ca24f30dbb45b69f607d8be1f2bc8d4396. 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/KRMIM2023029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1358a1de303cb57121372756ed36c4ca24f30dbb45b69f607d8be1f2bc8d4396. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/KRMIM2023029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608762e4e0ce9b0868046a42110971533dac5ba555d6e5a3eb9f6edc19d08b26. 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/KRUM72100465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689815c40e892808eeb9825dd3111d4abba2f2fce37478b4c19d1158160b994f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRUM72100466.
Glass leaf love (Webtoon 'The Admiral's Monstrous Wife' OST Part.3) [Soundtrack]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617f3bdc7839301165f73c51bdd03c8872f8e98cb025d01fbfde799657d88844. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:27:20Z), 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/QZNCB2187013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f7659985bea5393b4b8f8059f21dd6847de22bc6fa246b70c2044c851b8bd5. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/KRUM72300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1714822b3e4c62340dc45275d24b91bd9c51732776bc08ce8b432da622d92c4. 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/KRA381900814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe891a01abcedf86eff4cf69c4be9c9c3ae05f47ad85b7e452015b636baab9ac6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/KRA381900815.
More than K-Pop: Korean Indie & Soft Pop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc575f6a6913a5eb97fe602191b53f45ca03b33bfd752e8c5eb18c528027da84b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/KRUM72300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3655493709097e3a9a9b2602e657443472b9f896e09998e6e69396d7401379. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/KRUM72100463.