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 0x207c9ba2355cb5f52af7153bd4047fa94bf3c124f0a255492e315fbf3f0985c3. 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/d74e8bbd-03e9-4378-84bb-91480d9274e0.json and https://artists.proofprofile.net/proofs/artist/d74e8bbd-03e9-4378-84bb-91480d9274e0.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 0xd71086764eef6bc594d0bd6cc008c3cde7942fc7010845b06c2a7df26d848632. 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/ZZA0P2516779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b994d8a68cfc3e26a00365304f204cef1002c97bb441d6cbf2c50353c4e980b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZZA0P2515915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700c3441d7efc4ef1ed5bd46fcf206ebfbf7cfa7fb1c18510edac68ee7edb4a4. 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/ZZA0P2502537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa1219e48ed7cc8c1d36b001d33a411636aab250df08b3587165fdc96d5ad1a. 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/ZZA0P2502538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c076c9114a5464d3eab491ed6e43482c9c7d2745318efe47c138f1d576ad1d2. 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/ZZA0P2410117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4c8ee34bae511bd3b1bb201342895abc94375353ba6fe9e478d605de991f97. 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/ZZA0P2410118.
Paradise (Art. JFLAMINGO) (feat. Blew.D)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007c2e3e5f80659843935c2e9c7cfb23ae39c6751dd2dd9de9d0cda98776004b. 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/ZZA0P2404392.
Starry night (Art. Dizzy Blue) (Feat. xiwoo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e81ec09dcbe32f4ece79c30e2864a29239ffa88fe4d4f6a58d821908e0a276. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZZA0P2403141.
Hi, my dear (Art. Dizzy Blue) (Feat. NASON)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d502272b1ee2b04c8240e5832cff8b2c00488e50b3fcf5cf354a27538798aac. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ZZA0P2403140.
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 0x2ec985bf61c5e786ed860d068c6de0e128ef95e91e5209b438777029fcc6c0ad. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZZA0P2313261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9129902ef4c1e1ffc076e25aca0abfa1e460bbdf4100379a28ea7ed2da43b930. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ZZA0P2313260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f0e9c2598fb3de22364b4b1305f699ff755997868fe5f985b7a12fd52c3aa9. 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/ZZA0P2311232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ccaf11b9e02971bdce7c7233d86accf402fc06df42367814fd0eb10bb932c9. 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/ZZA0P2311231.
You are like (Art. RYUKIE) (Feat. Cha Soyeon, IFCHAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed35e64c737bb7cc7a7a63f1fac500696f9e1e44867cbb4c08bf3d926039c274. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ZZA0P2311233.
ARTIST. Loeyn - Long way (Feat. Van Corso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4431747e8535f8496bf1c98f19eb88b05f286ba92d51afcf88b95bcc31ac1d4. 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/ZZA0P2309931.
ARTIST. Weepikedia - 너를 사랑하고 있어 사랑 아니하고 있어 (feat. Slipperissleepy)
ARTIST. Jasn Purp - Miss U (feat. Rachel Aubrey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe449f94db297063f9624902579d2695a676ea75575924afe79bb4f9bf67e763d. 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/KSA002300564.
이른 새벽 손 꼭 잡고 있던 그녀는 과연 어디로 갔을까? (Art. 차수민) (Feat. 문보우, 홍지구)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2818b9b4a133dde8306d7d453333670a489bae616c39dc1da78335801aaad308. 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/KSA002300274.
ARTIST. Tmlm - 내곁에 (feat. L, Lokid & HYUN SEO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7050ebfa1510b64257332e582bd54bd87cf19eab8d7db359768883d86f75d3. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/KSA002202323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c49c804b6871bc7e14888f056bfac85e9a9844351fed8b0faf899c99d43aef2. 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/KSA002202250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9b81fc8a5a3920c58ba4d89ed852d3a4efe0e5bce2307d5a7d42ef4435c6c2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/KSA002201823.
ARTIST. JFLAMINGO - 공능제 (feat. Kadi Korgi)
Bubble (Art. purpleoranjuice) (Feat. zzu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c347b70442dd9cda3cd7e758423e4386c91e867add479c93cc2a0ee0d5ef5bb. 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/KSA002101473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ac7bede0d33c55a208fc08011536e396d28a959b8041354be210b3f484501e. 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/ZZA0P2518043.