Joma Sport, S.A. is a Spanish sports clothing and shoes brand. History Joma was founded in 1965 by Fructuoso López to produce shoes for general use. The brand name comes from the given name of Fruc
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 0xb3c9640b47699e03fddc9ddc0a63692571258620bf1984b8e8409cfa6d75b16a. 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/7abb8dbb-a026-4434-a267-f8f4dc3a06ee.json and https://artists.proofprofile.net/proofs/artist/7abb8dbb-a026-4434-a267-f8f4dc3a06ee.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 0x2bdd7716df617b43e33e289c639bbd3be73eb9f89d60407fbe23ba4f6b9549db. 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/ARFTQ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cc3867814d3a1bc93b2ca5f8a9a1c35a5c8228b13cfb74e6a57c25284812fb. 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/ARFTQ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74569841287ef65e9bf08476057d71287a4b1ceec164ba45116b82474e58c25b. 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/ARFTQ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722849f0d2c8b6d8dcf60b7bdbe36f72a77d35802ce87b2b283c32a643b1862b. 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/ARFTQ2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5c0beb0d29044b2f4d8fb4519cd68f5c572aadc3caa0f4176a4c1613fc1f83. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX202574688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc831b1cc5a62bd67166e1e8a1c9ba706a18b2c98fcb823bf3b5832799de95701. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX202574689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3bf451a89cd9264a13df5dbd55713f20a8a466ac78874176544997e039e5ed. 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/FRX202574690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950c30b212a749703f5b7f44d7be7edf8afccd1f257558d842b1b5d7d6a00e1f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX202574691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb4331f88b3a2ed71bbea6e1e386921f8094d6f2e3906008ac3e5386e08b02b. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/FRX202574693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdfb8c45f2bc37d419961bee621472caff4d6ad7165108aca73f75597f95a4a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX202574694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11539125bea04a66100089d688e4463caeaa79023bca98b91d31100bfcf1938b. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/FRX202574695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955e0ee5ed759a8fcdfa89cd48123c895249cf6f8245e319c62d820472fbfeb7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARFTQ2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6cdd181a03ad08d97f2f142a586033183719789c7ce0f8685cf0112484ea62. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ARFTQ2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3637edc36f94f6ddd9fe88b3d85dff6ddbc255f493e1649cf176c834fc62ca78. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ARFTQ2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67245e9f83a3d28640d0e118f4cbbc4b47bbdf64a0a568b4832c76dbd145b7b0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARFTQ2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714a770ca18e6c2e62694892aa261f4bd84ce27e1487870f3a56bb84b56f7eaa. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX872538297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fdc79f5e1ca647cd3348afe394e3d703214df6427721a7f0b977e730d80459. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX872538299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b00456b10d9f710e1ecbaf3cf641030d3c35b2596a5099a3a65ce1c237d43ff. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DGA062516346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1fec9ad544bdc03612bf353dfbe4f6496251b80d2d2d7eff08c37954436489. 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/DGA062516347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e8f86c44de6ddcbae1eb55164acbb51dfe7dcf1442b9a701f677bda44dff5c. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/DGA062516348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3008c61e1f28e5d731024aa1e2e55401930653fb6367741c8047b4cb13bdb7ba. 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/DGA062516349.