John Cosani (born November 7, 1988, in Lomas de Zamora) is an Argentinian DJ and music producer. Discography Albums Singles & EPs "Freefall", 2014 "Look Amsterdam", 2014 References Category:Music
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 0x3b60b280fe2c90735d6ac7e378ab780a36e35f40a2ffe14080c28e3819be3c0a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14fee740-5dfa-49a0-b155-d3c362072e6a.json and https://artists.proofprofile.net/proofs/artist/14fee740-5dfa-49a0-b155-d3c362072e6a.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 0x9c366e11c2b66ea449ae689ef834a478855523152f115e677f747cec64320351. 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/US83Z2305798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2dbd4acbee7b71dcc10d47a593f06b5644ea0572f585a32ae0da37aea79a33. 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/US83Z2305800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110486d056a04dc7530901eaf8fa6ac94a859cc00abce819eef79dea83e169a9. 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/GB5ML2100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23775a45d1a58f6b26398fca90c939f91035dc80fd3dd63ce59cba1008d4f1ae. 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/GB5ML2100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a581d1ddcd94428c9f9036cb98b0a6874c0573dc90d50ca19ac90ecc52789a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US83Z2025888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bfee2e9a0fb8e28c5d60c023e094c95ef2cc6c912542d2973d412645bcfb41. 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/UKU932460710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e913965fdcd4c05a062906c9309d7857040101acc026b56972eb78f83b04fbe. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UKU932460711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f4da1ed6ed51fde63140122961d9e6f903e9d4d802785ba030a4f8eedc24f1. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/US83Z2340385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15300bf9e7a643cb202b251077b58a4dc146a24f2061ebd611d9fb3b2513f463. 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/US83Z2340386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1dda2d9d6cc2208eee90b321053364618afa19a4ca3dde84f06cc6b0688813. 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/US83Z2340387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3477be0a0d355485e5de64e4cb38f7e3585ab206673c8375ed60f2aa763e08ba. 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/UKU932360557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d20db36e9f2e85a7c4e7d2d57067321e907a9eaf54c20a722a647e06bd2c8d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/UKU932360556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e1ce826a65cfcf4deec5b0ebec0c1ff9d14e25e60edc8cbd900b80c22bd650. 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/UKU932360558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16311a1427ea4755a229ee9d36589a2eb24308bbd471398041f0d74076fccfdf. 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/GB5ML2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d1e9ea8c80e739cfd133e3570ae7913a71e5777b3afc723a8b63418ce06996. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UKSP42200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa568fb77a15a4e90a331f4159859c8e12931857e1075524748fa61b53f5765c. 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/UKSP42200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dbdc20642096a922046ea81019d36cf1437ce866c21b5962d20043c2db80fc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLV62130553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f782a7944c9a7d02e83b738895d4bec6c520141931cd4e4acd22b4d4505cec. 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/US83Z2145670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1d4857e1600f79205eab87369b04ffa87d36cdbdb4572820178bf696c731ca. 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/US83Z2145671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8111120e97bd1ca315638244ccd2ab0dad9ced81b73595ed3dd0882dd32d2a3c. 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/US83Z2141630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0722bb7fe483909faa7a2be65f7a81824c5a4e47a9ed3d89d6e5786600b54cc. 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/US83Z2141631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8850956b8252b99a6f0b333adf2830e45a427e99ef4e2c8941e42bfda72004ac. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKACT2110448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9774de4d39886cc999ec500b768be63905f1380f747be2d236b5a63fa458964. 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/UKACT2110449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55fd7764d9e030baa55c8807992f55477ad0ee8553e2ff9e06ae0d54fdc88ca. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKACT2010247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a82d64d89e4ba9df5845b071753dc1fe74271e270d9fb88e0a12e41e5f6dcd. 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/IL4611900820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8524fbb59ff548d03d62797331d5515fb4c9cab1244d51ccda45bd0d4a823f2. 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/IL4611900830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7ad37dc5ab84cf9d1516e71462bffac078105a85e789a6c85d104b209b63e9. 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/GBZTB1400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf27e0f5cb97956cb1a0b1079261eea89acb42b455c0050e605a4e6ee71f3de. 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/US83Z2428098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3a08e2f593404e0ffa2583126ab9a10d863462862d03653d5d1abc4b2a747d. 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/UKACT1910716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8111120e97bd1ca315638244ccd2ab0dad9ced81b73595ed3dd0882dd32d2a3c. 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/US83Z2141630.