Jacko may refer to: People First name Jacko Eisenberg (born 1980), Israeli singer Jacko McDonagh (born 1962), Irish footballer Nickname Jacko Barry (born 1975), Irish darts player Jacko Fossett
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 0x127a20e94ccf0d49b64b766b0336f76c2f3df3993db160635f05d51ffa69a6b1. 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/d1389d0b-ca76-4040-bc44-c5e4b6e73b46.json and https://artists.proofprofile.net/proofs/artist/d1389d0b-ca76-4040-bc44-c5e4b6e73b46.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 0xf5b4986758079b05f58c8fbd9679fd04738ef0e01897ded6389f3a50184ad1ad. 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/FRX452357000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcafc785f028464573ffb280a99df7ba31792cad6f2ee6861816465a768e984. 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/QZNWX2253280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10e144db769f61051af93fce4a1eba75e1ab6e9f369c9e4ba59a9a8e56730bd. 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/FRX202041731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eaabf4b56c0fef827eb02d291ff30dcac651d1777bcd255381cac318dea6f8. 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/GB8KE2153749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc736fe6a21355c9cdc7f3380025fe9b44728ecb47456b3c1b6571b48ae16057f. 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/GB8KE2153753.
Yosh, Vol. 5 (Mixed & Complied by dubbleT)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecea1d3285d6b1c8e123989aa4f35162d1617101d28ac0fd9fecf459d4c37c5. 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/FRX872194789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2b16275ea01e42408b95aacd9df354250eb870956ce1dedb2d481b13811f70. 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/FRX872194794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621aa58cb536eaf26af87cc39cae57bdd6c5c3bac3aac032b8635bf1ecb77289. 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/FRX872194798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6fa09f529419b92f3ff06f892dec71f9e1b3ae1a71d88dd60bebb28421352b. 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/FRX872194799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6516478f8834e4fe41c5e96394c4b5447c941e99e4e54ee72db7fde03ffe1561. 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/FRX872194803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3762bc50905ce768c38ea4d322f65aa29ff5c7c17986ada79eb18be86000c7. 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/FRX872194804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90169f463acfe6fd70792775f53f694a328be2345bd592359b16e606dd588cf. 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/FRX282248223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14b328cd01c375835e0f8b6106f2bcfe967f015bd2fee1b1a2afb6fc038ce68. 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/FRX282248227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b419df62c5dda222b9681a984a8e22205e250b7ae4dc9e0b5b44c30a799773. 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/FRX282248236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f30417cb0d7bc9f72a0bb86fb809c5ff76c75dba304b5f395708acb063c170. 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/FRX282248238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0372ced48bdd703928fcd1067bb51d718d3cf2f457140d477c6255fc7fe973c. 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/FRX762229995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c3629378522bdb7bd38f97cdc11b1fcc0e29438cd90ef6b09ca000e0151f8c. 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/GB8KE2204589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3715efa19e08cc583a6a5b234b387355511d5c5587489f8f41a9d937a18857. 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/QZMHL2244436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81650547c8e8c34dc8ace61e05cc80e1d0113ce21d2f99e8e991fdfa4c60ea19. 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/QZNWR2169258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405cd41f07ff09de08356af626ef611841bd28a91a56d0584d2424bd6a2f4a49. 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/FRX452143890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72de8e7535ef293442388140717e0b52ac8b32b709c71e2d610cc5c99e36c5eb. 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/QM42K2185493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da3b534d4969fd6d8fb5d0e3535b729e7d4216429ed9091b2eb7a831a70958c. 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/FRS182050772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86989135c261bb2ad4698c042ca41db993f0aadc3c69533c7bd5b6c9392fa68. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DGA052024909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f531254240a6a950193cc016c27d8b1aa6d842c16d836751148a7fc2a3c14f. 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/DGA052024910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dadd5e4ca8e989fbbbf0dcc725bf65e9ab09ccb633fab40b6bae022ec5d7fe. 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/DGA052024917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7844895ddfd61a871758bdb11347d0e7e854426902a1d7cc0430e226a9307a0d. 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/DGA052024919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e03330797e297947d13f6cee033bdcbc8d6545e65d901fe6fbf59e37983b74. 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/FR59R2110294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc077d26dd8269e80b4f2429f90431b7961d346ab6a7863a2aaa4c58e64f2c957. 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/FR59R2110297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb356f529b8091e5317b51bd26ee28fb3ee310266fa8805fd56584d0e450bf439. 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/FR10S2297727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2b16275ea01e42408b95aacd9df354250eb870956ce1dedb2d481b13811f70. 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/FRX872194794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90169f463acfe6fd70792775f53f694a328be2345bd592359b16e606dd588cf. 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/FRX282248223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc077d26dd8269e80b4f2429f90431b7961d346ab6a7863a2aaa4c58e64f2c957. 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/FR59R2110297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dadd5e4ca8e989fbbbf0dcc725bf65e9ab09ccb633fab40b6bae022ec5d7fe. 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/DGA052024917.