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 0xcab3949b618896f61652020d96489ced718673d8c6108db0e3de34f45d9469c1. 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/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
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 0xf68b64f630a2084d57b4b7872f09faa53ae8f53b8d7770ca046dc2a6eb235b1c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRMAX2001619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62c0decc331e57a58a0ef07364e0e0d9bec2f2b93201604039fbd04a0b011a8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/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 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/BRMAX2001622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4612ee1ce893add4623b2319e30d259fd40c0bad9cc730b946e71c6dbc7d319d. 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/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 0xaec7cc33ade28e743377c959a9a37985955b9f6dfe6163feb73f90802fd49545. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:32:20Z), 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/BRMAX1400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9f34954a1ebffeb7815443d766d5630306f277a3822ff97c669ef47bfc17b5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:11:22Z), 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/BRMAX1400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c02cbaf741059fb8567894e0308298ae4bc51a4dff9608bcfb5a98932850b8. 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/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 958203 (2026-07-15T23:07:46Z), 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/BRMAX2100109.
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.