Leo is the Latin word for lion. It most often refers to: Leo (constellation), a constellation of stars in the night sky Leo (astrology), an astrological sign of the zodiac Leo (given name), a given
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 0xa36c21ce4dc1856940a619f8ffd9b67bce9be0eb5ec9f01264b4d2e1374413e3. 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/0aaa5899-a5a6-47dd-89b0-dd48bb32dea9.json and https://artists.proofprofile.net/proofs/artist/0aaa5899-a5a6-47dd-89b0-dd48bb32dea9.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 0x36c34515f6135a59fefd8cb5eb2bbfe6529c458ce48a449bb0b1b0f8b421a0cf. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/KRA771800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe699c0063b081d1233f769aed3a3e8cf72ad71f9d02c5e89596ab6c2346b752a. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/KRA771800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25297d87a2d667fd9b7d4b4fc0b7af3a6bac98163f5454a61d584ba84b9e1ca3. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/KRA771800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8795eb80dd5e7ed748ef7ef827ac92c5072552f35462426ebb45ca2f02df4862. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/KRA771800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfcc997dde833d1489ae29c0738b8c248dddcad7d47ff8202c442384fe34211. 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/KRA771800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474b9ba3891196ff7f34e1ac5d35aa0a54b3d079b3442de71badb8ac9f88ff96. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/KRA771800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bb51e2b7218c5b5cc943d9ff8bd4e01831b211d3cc6a85e9ea04778ed97b55. 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/KRB471900323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e17682de00a34c7d2c786ea3acafa41db84feaaa01da8261d2f95101a88a1d0. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/KRA771900023.
Things about to happen (Feat. Choiza of Dynamicduo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468343cba14a9c087bf93ceb63ac99b3cfa66c03fa1f51fff6aa9648346bc00e. 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/KRA771900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f2e9706b6320a84d669b589a726eccc2751ac5e7daa751b50e96194ca0dc23. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/KRA771900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcf249b73f7b6e5dde666d94e6ca18eaae5779741102b3653b973ddc63d8b14. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/KRA382206919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7dc3e89ffa4b635413a92762616cad32b928cb3b99a5c19af84d366858db8e. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/KRA382206921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567608769b5827adea37a2749b974b2d36de4702cb3a2004a5c0dc1c91f534d3. 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/KRA382206922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6546d908f3ce49af2c74d3bc353b57d1b89a25715840ccb701f2f39c2b6f9682. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/KRA382206923.
HAPPY ENDING ROMANCE (Original Television Soundtrack, Pt. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8421704e05e6ce99c4735e923385693b6bfca367e89847bffe1442d9ac7c1ff8. 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/KRNAR2231907.