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 0x7cc2724d7cfe2ac2022db57b286e75e74ee0948533f4e9ff9f4e9b83b2a3fbab. 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/4e429b5f-f7a9-434b-abb8-1ef603caa603.json and https://artists.proofprofile.net/proofs/artist/4e429b5f-f7a9-434b-abb8-1ef603caa603.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Mc do Piseiro #Chamaramonzin (Ao Vivo)
O Mc do Piseiro #Chamaramonzin [Ao Vivo]
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 0x9a3e64497ef652b52504099dc8b10b2fff6bccf0a6f1e797fdfe123a6095499a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZHZ42274533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d09f8bf827b153fd04b362359f507a7dd12798d2fc4de33c75b7707abc97d77. 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/QZNJW2220835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1086adef08ea705aa688beac4ace383432ae9bffb4b6e19607d99770e15aa3c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/US7VG2362725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4cf2206e2c662345e4a4973a350d1928a1dcc1cfa1b317194cbcc5051b5cf4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US7VG2362726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2d79cd0684532e4a9abed264e9ea1a43d953d145f2229d49ec1b365e21a0d1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US7VG2362731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb104d74ff03987973127e3e7d410c573a079a55737c7ed19c362a1375cd0f01. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/HKC371730003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a61ccf54fbceef93822e289f842f5224517921b84b13d386ca228601a09388. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:54:22Z), 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/ESA112437223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f30832c70481d08bcf34e4ba39846bf78dda652cbff909ccd0f1ea2473510c7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA112309790.
Vaquejada no Estrangeiro (feat. Jeffim cantor & Turma da Pisadinha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8257135607d5ee8890ce83a058afbba93d4c23c48156ef3e3f9887885b4b985. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ESA112309799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22858e0247d01bd3f99fecf1ede61eb088499b1f0bcb6867640894fcf0d30c6d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ESA112432468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b20cbd0c412148492edf50a186def5fed32dd167bdb07012d29fa06c0581495. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ESA112446482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ca7d0363c1eb44a2a35d8302a0ecce7ec688b75fbd6955a465babee794e772. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ESA112446484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ca7d0363c1eb44a2a35d8302a0ecce7ec688b75fbd6955a465babee794e772. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ESA112446484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a804a4aeb4b2a78644a4af43ae1a068b47407366ffdbecf0dc2a38de3867177. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ESA112561648.