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 0x8f3da4004bb4cc30b3fe9b1ebedab22a70033a78448c576c6e330c3964196777. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe51a02b-430c-4268-a00e-5b0ab2dd46e1.json and https://artists.proofprofile.net/proofs/artist/fe51a02b-430c-4268-a00e-5b0ab2dd46e1.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 0x82a08be6a10c08b1626f7426e5643a402e05b7fe256edde20f4599f95295b60f. 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/BKBUH2300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093f830425b913a5bd1f0206c761655cb61b4f9f03379f80041be2f80bae578f. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/BKBUH2300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4dbfeb8e4633bb642dec560f894c1ee944c1ef2e9c068f8bdd2f5aa9f96abb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BKBUH2300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016f6eb4c8a8d5daf17826be900b455a8e4f6c04c762694ef62138eddb0c2c8e. 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/BKBUH2300141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b87e0a7ea4e67b15bbc08c598f7e442f8faff548d9e5cd6e5f13de5bd58f3a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BKBUH2300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59025249fbc521b41f84e123f346f2aa393f4a7218ef29aa6040c16a035ff9fa. 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/BKBUH2300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05eaa1aafaa8cbd79e93a2dd0b50c56a240833a777efce9fb29495ed2eea32a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKBUH2300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb046da70359dd54593753b472c5031016557fe0668324aab402d8e19a785d548. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BKBUH2300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408fb71d45cdce5f5437fabe19f33214845268ae5bc21be9c2e94976a4f8666b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BKBUH2300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3861d52ac5069ae21e342655ead8e95fe40a19faed8c3a524637a5e9b35578. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/BKBUH2300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c1de6408a8a7d0355cba950dcb5295f84b36145fc4e6248da88c47c5d86e06. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKBUH2300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0d705d629d8af07743f34d451e2cd3625b41dbc20cc2e4614c9f124e405d9a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BKBUH2300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ace8abe138962e3e1e86ec53f388e5eb31a5de3e1919e5462b4dc1ab4e3957. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BKBUH2300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d338da6abe73c33a36e09ddd568f341118bb35fa4ebeb5aedfd65390a10354. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BKBUH2300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b00be29d1fccb2a1dc71ef872f7ad6ebc84e096d41cdeeaa56288e4de6b216c. 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/BKBUH2300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a20698886575bcd3061e782885897f1cb06b90442a82a55fd2225d2ba5d72ef. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BKBUH2300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a31882d3e745628ce42c3596d2c06db844fc621910fef82af27f8714744c23. 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/BKBUH2300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689332a8646c4c70466f244264763a5542d8b49279d0228123f724cef7178807. 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/BKBUH2300155.
Aldeia Branca/Entre Serra/Amanhecer o Dia/Agarrado em Você/Tô que tô/Primeiro São João/Saudade que Rola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826a1c10cebb4744e7670dda9bbb74498a814861adc92bbcaeac63af2126e090. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BKBUH2300158.