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 0x89a18c950d4981900d789ce97e57b1518a639a094a3efb38bad9d3b6c0e0b550. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b1a01cb-6a16-4e01-9f00-de2e435b1e2b.json and https://artists.proofprofile.net/proofs/artist/9b1a01cb-6a16-4e01-9f00-de2e435b1e2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sucessos de Barzinho, Vol. 2 (Rosana Simpson Voz e Violão)
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 0x41e942f83abcb60d0c1c934df3fd769dbe2391edddc32dc128834e38d7db3591. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRMAX1600724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d0424d91e36477b5512a65dded81f3a3ef6336b70cdedbf7e9ba3aa8de4bd6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:39:29Z), 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/BRGRV0102586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba6747d8ce138504d4efb3d985b42ceb7e9a6543e3252643ed20deebefbe88c. 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/BRGRV0102587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641cd7e175666c01b5db043d69374433df4e52ebe830294ae8745208df9c6859. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:04:14Z), 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/BRGRV0102588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb163137f0b4de4fb3eb8f321a22a47c5c008d4a764c6c73d28755d2198c85016. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BRGRV0102591.
Na Rua, na Chuva, na Fazenda - Casinha de Sapé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c1290e5f2c364712b41631da9cd5954d8f36e215d2a7afe88a212ffe2933a4. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/BRGRV0102592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bddde9c78ce43e6e00c3e86c9337c66902debcb4274b1f02fc7371659f5f27f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:03:41Z), 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/BRGRV0102594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed0cbaf2a0a27a43917911339e09261b198123ceebd4e6f7060f7f1ba9232ec. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/BRGRV0102595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0396ed5a33c47b4afb16ed22c2ce8ad31cc91464b7d8b88f6865fbf99fe43e0f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:15Z), 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/BRGRV0102596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62084851abec228e1de7c394b67deb659113553dc9c27b380c60ed85ac1a6d9. 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/BRGRV0102597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf53d17cfcd9e51ea63e640ab3df88d90c51c6d99b1f42a677bd6b757edf02e. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/BRGRV0102598.