Nairobi ( ) is the capital and largest city of Kenya, located in the south-central part of the country. As of 2024, it has a population of 4.8 million and a metropolitan population of 5.7 million, mak
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 0x353fda8ea4cbb02744ee586b1a00404c748c790ff26598c203f31c5f3deb486b. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1885e34d-f12e-4049-b87f-bbf804070442.json and https://artists.proofprofile.net/proofs/artist/1885e34d-f12e-4049-b87f-bbf804070442.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 0xe213164572f629b7cd34eb6a54024480daa5ca4deecc0aaddbf5b32437bd8e3b. 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/ARC291300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b18d66b6ff26952628af1fe406f589d44fd39915f68ade87ab50825537c20f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ARC291300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23aa8958c8b772dced2179505a0fad3691fbb07b3e69835925b4189d2b0a694. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ARC291300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a264e5a2781bd0c3cabd7073ab283312a7c24dbd0cbf2d5c2bf0e8a98edffe. 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/ARC291300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f37d98fa5b2d1bb1d968bcf3837b70c14998781f9cac888451ee8457cbd599. 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/ARC291300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a66a35c897acac9c705b59195873d1b5fbf96c21fb4143f4321e054145967ef. 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/ARC291300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1925690d1fa2f987972b609af4e362c2e9f8c7d6466f8aff4b6677ca3a9e75a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ARC291300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15c78e8fc6e7fa776c9dcf9d0852b96822026ab44bb6466ae881d0cc7ab7746. 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/ARC291300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750d1903dba37361765ba9e3c63d6b4a7654d6a80f69a265cfb806ae1900f83b. 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/ARC291300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7aa7f85dba5e2f14fb2817266452420526a53883c35139c94e1af9a5ce358d3. 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/ARC291300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb4ef6fbee9d1fa1c3cff3385dc0bde51b94d9d2f197115447fb0abe04fa6ee. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ARC291300012.
Funky Soul Makossa (Full Intention Remix Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb304189b491c032cc5fb393d0887de0faddfc98e570ac864224ce7aaede18a3a. 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/BRCQE1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83032f63c950b07c9d6fdb4ef1566f9a36f09825a25c2d8f38193dc05fb640f7. 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/BRCQE0600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280861c6b9c836a3e6516e86ce8a6a73ca579a58defde23f810b0d8a3438e545. 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/FR96X1697409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb301265a02e8ce21a1d890e5d0565983679c89ef9c4c2e21506562a74c5d20. 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/FR96X1697410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ddc4bc77b57d29069cc4e4560220759fe9ab925d801fef4adce48779147c1a. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/FR96X1697412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510d5aa6b9f97286ae47d79209f8a7fa98ea7655b2bbd8c8a6de0e5f6f4930cd. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/FR96X1697413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa345ed14fb97b00240473b5700ebf4d13601fde2da1e0d05f0b70d7225e708. 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/FR96X1697414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfabcdd37a8c50db3c53ba64cc06fcdf4c6a2522ddac80d09908f64ae74bcaec. 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/FR96X1697415.
Hemp! A Reggae Tribute to The Beatles, Vol. II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b488df89876de91bd6389d2ce8489b91f9e8157eac272f94dda1ef912487f2. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/AR1K21300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a36ec30c33f5236f743fefae4e03c27c4d616008c70f9fcd1e7a413e660c784. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BRRGE1911318.