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 0x250a463a2c0393e595edd0c5158ee42b4017f5ff9efe2d7ec244556420fba9b4. Chain 2 (Bitcoin): anchored in block 953843 (2026-06-15T22:27:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00c21add-7b0b-4f82-8853-b3de20e56888.json and https://artists.proofprofile.net/proofs/artist/00c21add-7b0b-4f82-8853-b3de20e56888.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 0xb49c0f4b4f32ae4a4b4bee7ca7fae00c647c96ad0a383b86f90c9d09df591897. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/KRMIM2334276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b61095c4bc0b98fba439d172c7227c39cc4eaad8caef869bce02e57d5a6c133. 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/KRMIM1922960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4b46c9fc363d8d6b5e7d75a648a40eea5148a627766477eb10ca2350c9d6ed. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/KRMIM2136100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead9e7fdd099c7cf0cebf3d46a9baf9ed6807c7fb1586a5ab65e9c62699365ac. 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/KRMIM2011511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc42bf9b5b376fce7f951573ffe2b1a035ae2bd6c18894cc84ee93732be25181. 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/KRMIM2001184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80898904cdfd079899948149f65065e5a05d1c948bea2ca28edf9d0eb6cfd37. 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/KRB461900413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a175d6ca9f42a1d74d6dc33d331c769dc8decd129acd81aef28540c09cf7e2. 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/KRB462000339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9404f8d9ee53bf56b6602c4706e04801de292d35914f4b11f905d6e48943f9ae. 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/KRB461900414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda987b64436361e61b803587096e4f970fcecf6677e12b392137080ee68f52ef. 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/KRB462000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943619166196cb17fed2891bb9a6f50456dad87d4dbfb3b557d0c3786ca265a8. 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/KRB462000341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c505a8ebfde826056f665979c84f6c6afbab6088b45d4d96e8e6e0b0af438d2. 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/KRB462000342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b61ba01be7adede45947c54ab1c2b931627e521d1fa5a6f1292307789d4a36. 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/KRB462000343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835bfa161d2a674f84d19f9841c4bee2efda8cdc6cad874da7328f9bc06b41ac. 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/KRB462000344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc939f180e456ac160811841c8a11b870016139cf6e84d61861c9d1fa907432. 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/KRB461900884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd751f174008426b2825678f620898d8d770327906c2aeff49dd764c9ee8559c6. 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/KRB462000345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99aeaa23df2e6b182b30e71b4d209b8a288938fd036095bfdb74606c0a71ea30. 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/KRMIM2021130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9f1760ac1c4bed0649dd88fa96f354a59c637d664d72567ec54052b79a34a8. 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/KRMIM2021131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8331748659ee810126dd8382aa5647f0fb11b7d15287ae34f348c2f31ed495. 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/KRMIM2021132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d5aff6ddda0073caa49772cd2949a2806efdb7c73c1637fbb4f3070b465d3b. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/KRMIM2021133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c92b1bbb3b8a2ea80f6dca4d6a5bcd2f59acf4378870a194082b38ba7c372b4. 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/KRMIM2021134.
A CHANGE IN SEOUL (feat. Mckdaddy, KOR KASH, Lil 9ap, TOMMY YANG & Jeremy Que$t)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761cb6e6c4272f3d9a44e6fe5f4e2d053cce8a5ea9c886abf22517e0e36cf1e1. 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/KRMIM2021139.
Mal Do An Dweh (Feat. Dumbfoundead) (Prod. Mike Gao)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4f648c1bf91b4c53d589e15d237c6051a4d49262d2ffc854d19346171abfc0. 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/KRMIM2125498.
Hentai (Feat. Futuristic Swaver & DJ. ZO) (Prod. GooseBumps)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5778eb927bd87cc4e598521fdb1528ed04da94779e269d9e9709c1b11af10b88. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/KRMIM2125499.
Yori (Feat. Lyricks, Azure, Ugly Duck) (Prod. BRLLNT)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51265f7ac3a6445ffeb19df59d561fda095e85e9ca48fea822502421dc89edc0. 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/KRMIM2125500.
Fake Laugh (Feat. Jay Park) (Prod. Awkwafina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee823eba28642f8b39134ccb55339efa98e8699b911b1c058b5113cff1669219. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/KRMIM2125503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683ffb35f0c7820b3e4bf079d78feb5b97bce55bf5cbc156d6db09782502d13f. 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/KRG072000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0108be9a698ef96f4acdb43f11b6750fd04bc3c9a9a37d97e577e4f5e4ecb0ff. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZEKE2000526.
Run Run Run Remix (feat. 먼치맨, Yuzion, Lil 9ap, Bona Zoe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fac4c5327c88d44cfa97470999a0ee9158ac25264262b6039e6cb1d8df32ac. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZEKE2000527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da7867ca091651ff4144c7dbe455ede0dc9a445201b84284203121270c0d90a. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/KRMIM2418501.