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 0xcab3949b618896f61652020d96489ced718673d8c6108db0e3de34f45d9469c1. 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/1c64b6d1-c2cc-4dc9-bd28-e6fc06d2d64b.json and https://artists.proofprofile.net/proofs/artist/1c64b6d1-c2cc-4dc9-bd28-e6fc06d2d64b.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 0x80b3dd41656d1dd9dee3a1664ea085e17bf878acc981d398b1aecb9c2d235219. 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/BRMAX2001587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fe243058acd69fc977b511f249f6002887da6f352dc2e4a1a267b8e44546bd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BRMAX2001592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dac3e04ffeffa4a4360a47b2afcd4335a2208fd6c1c9a6a6a135b66a0a285dc. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/BRMAX2001593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68b64f630a2084d57b4b7872f09faa53ae8f53b8d7770ca046dc2a6eb235b1c. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/BRMAX2001619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62c0decc331e57a58a0ef07364e0e0d9bec2f2b93201604039fbd04a0b011a8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BRMAX2001620.
Vamos Farrear / No Galpão da Pulandeira / Vou Ficar Doidão / Esquenta Moreninha / Dê Eu pra Ela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0c4c2b2e1c4ff2d2c136db71944deec8b0fec10357cd996ebb2f3a4b825589. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/BRMAX2001621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4588bc0ab4c165f9fe96d394af2ea14dc99de203d6e41c1b2efe0ece05c5123d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRMAX2001622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4612ee1ce893add4623b2319e30d259fd40c0bad9cc730b946e71c6dbc7d319d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRMAX2001623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45113deb6c193f980df8598eee53ea048339f0b25413fe065505db7169672b98. 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/BRMAX2001575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b64c91f584ce9114b2857199df3687365d501715d4d0acd29d46408ae57270. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BRMAX2001581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a6be6422d7bf3d0fc4ea9176c59cef9d0e6efec9cd2714320e4cc0e7569884. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/BRMAX1400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec7cc33ade28e743377c959a9a37985955b9f6dfe6163feb73f90802fd49545. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/BRMAX1400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9f34954a1ebffeb7815443d766d5630306f277a3822ff97c669ef47bfc17b5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/BRMAX1400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c02cbaf741059fb8567894e0308298ae4bc51a4dff9608bcfb5a98932850b8. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/BRMAX1400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ffdf2b34a0f5214f1e4b64103d3a14ae86ad534741868eff8685e9a6874b2c. 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/BRMAX1400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4939df8b918db15b9a9c46ca02ae66b25385de29baecaa2485643b22f304b089. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRMAX1400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d28416e85338d9680dbc06069f66b52e37e41481f40319e2d4642c606fef20a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRMAX2100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9952f76db045334d7c45554888fb7fd019422ee4cb8a1c5d4604f897666d4a50. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/BXN9M2010534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fbf042fbc2c9cd0fb9733bb9e541a898857986a6dc93f62c1f7fe99f2f1764. 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/FRX872104268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb7f45e4a62b96b37b31388cd850e5456954874cfcd1ff6fef91229026780b4. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/BK2OA2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19287632f3008329829717a45281ba678aa535e438c0788f8dafcaa19854c10. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/BRFT82100255.