ONF may refer to: ONF (band), a South Korean boy band Official National Front, a defunct political party in the United Kingdom Office national des forêts, the French national forest agency Ocala
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 0xc20c37f9b4b1afe39941ebf7e0e57d5a6412e7c7cbc0a2bd11d2d6d16c78bf28. 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/91380ab7-ff9c-4d23-b669-60cd4ba36d92.json and https://artists.proofprofile.net/proofs/artist/91380ab7-ff9c-4d23-b669-60cd4ba36d92.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 0xb0365f65b3368e07615074bf8502e8344d859207b9dcedcbf77aea105e71dbfe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA492000655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61623b9dd2716cbe9944d3d297f9ab34d169bd20db2c80f7329cb80e24dcc6f7. 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/KRA492000656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8314e454f7a4896259fcf3551298c7f4bf5b5585508e667847a08d92f6cd3b8. 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/KRA492000657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5720ebe1f19cd0a079b3909ed9b1229c0e1a48be4b7ca9de310904d50677d521. 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/KRA382402014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb22ec1f743956221a2c39245fdc8efe6b6bf70c2786070f8cad3b6ee56049f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA382402015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2244a8059be4ea6a66a9d7577c227103b20f1329d705bd4bc84c33d695a167. 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/KRA382402016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd73bd09c63bedbb6f024913a88c0ba100610889da59ca464a11e09af3dd18d. 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/KRA382402017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85882f5382c52755ad866bda611c0a029a6b36f0e233fd7078b6d7d9ab98cdbe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA382402018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebea670920c9cb960707e6761b3439a7e68a1fa1d4a4ceb1ef77da6ac419dcd. 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/KRB462101329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1ab7736c1a0aee0548d8c8726d44d47ea11170fc5af96297a81b9be7605dc3. 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/KRB462101330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd1ad773b953d12f6ac311312efa18e7f756c75e8f83e3e5a2c7fd6ec85bf63. 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/KRB462101331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095dcfea1b3a8904ef0adae5a2f9389d7b61ea74b9c139216bc046636a7b4458. 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/KRB462101332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7be36f1784a96b86e283bc18a3b2feb2899f9624959a9366831067983f011e5. 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/KRB462101333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e16efb661cd62c690a1ca2ae347107871fae9d84cc2264af62876b93dafaf34. 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/KRA382006062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b43380ea8e511018e4253d433db503449682ca17930ae16e5d0b0452d4e139. 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/KRA382006063.
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
Road to Kingdom < King's Melody >, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1768ce05a6a81d8f6d4317a4b769e7367bb008462c1f3baf920af47a36b74146. 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/KRA492000572.
When You Love Yourself 2 (Original Soundtrack), Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa28af58f018975437a88768aa647f62addb4fbb2514d158e31031783336f353. 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/KRA491900484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c07ca2533dbad375de545f0585451a7461ac0315ebd935c0c621a76ad2c76c2. 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/JPVI01887540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3f2a12da1b485c742856c2006f3b699f7e3ec8c1de5d0ac8932ba48c166a36. 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/JPVI01887550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2495f38b6d1c6f8b140a8ee02717377423cdd933bc5b87f00d6507e8ad136182. 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/JPVI01887560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da0486827f4c42f667085dccac5918e235976f868998ab01c3f60249d7dc0a9. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPVI01854000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b88cedceab4d426f17115f278869f77e7c799031ae7b83f8659d650137703a. 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/JPVI01854010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe116addbe17947df4d29cb6bdd6e37f530e0a3622b3d29ac2587a26010166822. 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/JPVI01853990.
Let′s Eat! 3 : Begins, Pt. 1 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2cabcdbfeff9fa71ded88ff72318746fdbc6a611bd972b94209aa9815abf33. 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/KRA491800672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c1cc494416f7bf441094f66a31c516bd8f41cf9b5a390272cb64cdcf036587. 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/KRA491800673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a349680e74ab8c370ccb18f2d16ebbb40ea1ba84aae1cfafaff069492996aa4. 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/KRB462000761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2150d082c8f85abd030b75b66605fd61453f2e3ff003bf259a7212c9ccedcf1d. 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/KRA381802245.