Ocho is the Spanish word for eight. Ocho may also refer to: Ōchō, a Japanese era name Ocho, a figure "eight" in Argentine tango dance Mount Ōchō, a peak in Okuetsu Kōgen Prefectural Natural Park
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 0xcd1ade2bd10e6a781eaeae7244a1dcdd8b990614cc5507a4ad75c03b732713c3. 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/03d5d8a9-a3fb-4f2b-9d58-01806bd56128.json and https://artists.proofprofile.net/proofs/artist/03d5d8a9-a3fb-4f2b-9d58-01806bd56128.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 0x64ad31396b5b9ce01932dce4d8a8c03d03bb0eca299bbc17c6601384cba5a1f6. 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/QZHN72150018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85748e296d305ac91972f3539d29de4a854e24e70049b0f08045b24856d36eca. 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/QZHN72150019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f6b0ff8bdb6fb67e3345b5888bea18163cabf5e763e7f9f0257406e8c2eccb. 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/QZHN72150020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c323305d1f0f4f2657b147d5cf1e247072bd236a41fd57ec07a80c285d02d4. 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/QZHN72150021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcbc1d1d0bdffdfab517190e8ed210d70d0bee4023bbd471f582409d573aa62. 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/QZHN72150022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a922290627ceee2ed344fa38663e3a2573d2061813389d78fe2ae9d6e201f0. 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/QZHN72150023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa733ce4e700f9c578141ff717ca3cec19773aa80dfa061fbcae24b6a65c2d879. 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/QZHN72150024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4948afa7640e22391c9788f783ee5d69c7c64f96fed0913e05f902c4d2965c. 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/QZHN72150025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42fa4d6e089860d1e7c3eec0080db7a260c1ead45297927a87516aa0aa16234. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZHN72150026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0512b4e163fd19e93b0ce01132274871798c45a6898d4bcd22d1e7d0383c92aa. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZHN72150027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a35739f43d69ea275bbbbf3c4d8950dcd22034906c43a25e7777c7b66ffed3e. 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/QZHN72150028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53648ef70d97ba2beec0424faf7e8b0670188a0d050162c9b58bb2d0b701fe13. 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/QZHN72150029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a0f9f293da9bb1c8138c7204f96f26fe222b1ca029b73fb6c5c523869f1786. 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/QZHN72150030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4434b07963997002b66b2322ce7a0403bdc26feb6b62c90ff9047a2385d42eaa. 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/QZHN72150031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03485fc5629c1a238f047b9c031260ae74fa033e8d8203538cd06dd9a89a4ae5. 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/QZHN72150032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2007b87fea78543b31690e106deaea12812b7d9d81d3621224dbb5fd6d04f68. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZHN72150033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069c885fdbbdfcaec4fc26680b499f81b4c708f6897e8773d7fcf5357471d4b4. 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/QZHN72150034.
TOUTE L'ANNÉE C RALENTI (Chopped & $crewed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ca16e9e51abf14899a78ae8f1903e966b9d0c117217057b364f4c7c13259af. 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/QZMEP2045813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13291f636f31b7a57441ba87e4d9668d6a6a5b39ac043565e327d472f76fa31e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZMEP2045814.
Ça Connecte feat. AnNie.Adda - Chopped & $crewed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedff75c395010c3b11de8992552667a9466bee64c962b037c1d7f0466b8656dc. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QZMEP2045815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1afe7710b0eefa574b83f5dcc53eb5ecb0fde578fb43223228dde9dad687bc8. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZMEP2045816.