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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 0x8fce39f431bb518f0ffa332af7718d07e7dd8ec6380aa781d2692544310d5c6f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa6eab36-2733-41dc-9d82-fab2e1a51837.json and https://artists.proofprofile.net/proofs/artist/fa6eab36-2733-41dc-9d82-fab2e1a51837.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 0x5469eb323fe77fcea83363c49500150d8ea7f006a8594dd52fba1688f62c9d98. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BRAPI1900224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da67c48ada8fbd52baa8dff4daa8674f467cc87109ef5325984ea71ddfe10ac. 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/BRUM71902756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44f5883250937603a49787ece3f673b85ceeaa152325fc53d9371df7a279fa8. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:52:33Z), 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/BRUM71902759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f1e6b025c400181ebc8ab16b213116f9c3ded8cc3f67e7e07d724dc2275301. 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/BREMI9400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed84afbb304c970716a3a68e4e67d5470e6e6d9e26cc6964ee46c04a3506033. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:23:17Z), 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/BRAPI0800140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f5b8baa4aca39a359122dc7eb3df40d56cf6880c5ea3384f554c31b62be7f6. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/BRAPI0800141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce4baaaa828cf2eb1b74874b045e89697bc6a4833e5add4aea7a30c762f2b98. 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/BRAPI0800144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960355bfc0f48aaa9adf4d29860cac23e5e5f18479092ca85b9ce3e91424e052. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BRAPI0800147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8087887fa1b1ab51c8c45aae0153c93174c66b998ff71584dfd9b2c7fc8a16. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/BRAPI1100273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333a234473fc8f396396e41beb61ae2cd65df1d9d00bdc4f83f39084fc94faee. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRAPI1100277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc4985d165ad275987fe3c12d884ec4111adab069362a790ff6d9d726f7390d. 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/BRYAH1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5f3275ba4b73818b742a3e00b2a12ddbf347a831610632b5424dc18a37e59e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRYAH1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391e5cea434bdb0c474cb2899c71b46b5a834ecf61daa5cc83a23e2213a2aa38. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BRYAH1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9854c0918d79ef3350d6a235027e443a8a8865b135aec9cf2d05f3b46d22af9f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRYAH1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf0af9256320c42f9af10b8ed72c2f0dca9efe5fcaffa1b2fd9b348ee22a25b. 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/BRYAH1500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5d2543e0ee617e8484eb4f66f3c588fe2631ca3ffcf699b6cf09c8536d93a8. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/BRYAH1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed83edf2ba198dfaff081db6ee3951de16864aeaa7bbaa30654322a83e5ec665. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRAPI2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfcbdcdc969a28e3d6eaa0bb177b67eb5b6aaa762ee6bc4cb6b59a4dacd0db2. 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/BXQOC2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147112cb35a2e9602ba840e8fa42257b9d8c83e2fecf71c158651842b7281d2f. 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/BXQOC2200001.
Ao Vivo - Falando De Amor (Ao Vivo Na Casa De Shows, Brazil / 2008)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d8da1a33b8ff1f4df0bf82bacd0d3d39ea2e7d02d56ac916c53b9823242d1f. 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/BREMI0800554.