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 0xb0d690be1583a46235b00a91e1e6421876370b82ad2d55d04e19b12a4dbc2e1f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6fca0066-8b20-471b-b5c5-e2ddf3967961.json and https://artists.proofprofile.net/proofs/artist/6fca0066-8b20-471b-b5c5-e2ddf3967961.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Multiplicar-Se Única - Canções de Tom Zé
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 0x3c3bdea94f0128413a1591f9f97682240fd5eff4eaee0c5f9e23cbaae90b17f6. 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/BRC0O2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb1544a732f9d4630897cf3a089a468cf61acdbcc30fdabcc08dca3288a356d. 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/BRC0O2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969cee3235fb84db4830bac8da7c3b4e6167c24eea19ed2cf0d80ef5da18a435. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BRC0O2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f9f657f4d5f7f661a29ecef00ef720890877b262d622d2c805fab895c2fc15. 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/BRC0O2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2d62093531d16a4d12a0d9953fb7180899a8dd6141f553c392522b73186af2. 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/BRC0O2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd87df65d7fe3ba50d6d33a919f2737e87d825e0fede068995fd6be81d54e566. 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/BRC0O2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a75ee7131b0291003998d60d50a0fa11f9931c02e4b235afcd0dbbbeb077c7a. 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/BRIHD2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc460331e3727edb03ea0c87dd8d94f906c770fa8986965e8fa133abc80b6219e. 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/BRIHD2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4e1a62d3428c2bde80db05224b6ca820b7afe0c157f5c21a3c421297959fc6. 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/BRIHD2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d36cbfa86542ba3dfffc2db5150ba005a0028ced718e7aaae1f7229257bf50. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BRC0O2400002.
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 0x0df350d62768a86fba9bdb59bb605e58ed437ea5f714a1acd9cac9ccaa8ae18c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRC0O2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5612882a551ae52fff40033fcd7aedf59bf54ff425634b377e97882073566ed7. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/BRC0O2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede4701c13f0767195cec49fc151972faf08327035f99b07ff874e3ebedf45c9. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BRC0O2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe42b9bef1ee8e6b769b397a358fbe7656e6a4c0df673f5d86dd8ad98a27afdf. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/BRC0O2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8d0ee3234b628639a9fe96240d893e93a9e1f79bf2fd7a20635884e5df77ee. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRIHD2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1393d07dc4e367aab7220a5ddb85da87775c46fe0300060acb0f625dfbf8e0. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BRIHD2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9ca9fc696a4025234dca5b6c6efe396820945563b6acf8e47078b9bdb7f225. 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/BRIHD2300006.