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 0xef7fb11da2da1539efb9e141e49297d0dee21240b39408ec3804bf493364c124. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49ead138-9a7e-4e2b-92bc-de79b4255f60.json and https://artists.proofprofile.net/proofs/artist/49ead138-9a7e-4e2b-92bc-de79b4255f60.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 0x2fb4e6ff1d28cf38431b06a147cf4a637b4cbaf4e9bdd23645a37510d806362d. 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/QZEQU2126144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f2ba93e7f8734923d8ac1fc6e2f1ef14f7d02c54cb155c3e0e69fe22c4c7a8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZEQU2125612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda457871b4c0cf4a9c90e5dabb56d6e17979bb86722b1f68fff71e385b1b46e0. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZEQU2125622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb350d3981ed4688f5161f33aad643ad1b40f3f8bb8e0168e7c5cf39a28f1dc9c. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T04:08:24Z), 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/QZEQU2125616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046189d179b3a5e05582700fd0ea18ed2e43a4da1029f102a11ac20309e77f53. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZEQU2125928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60ba72e9edb3630bb9e26567b9a7f2b2e7576ccdfd6e9f9a29f45ae22725c0a. 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/QZEQU2125930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc3b399bb2d3197dc85d29743824b14426d6c42c3bf00f6b498dc707260110e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZEQU2125942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ec229b44c3c18dfc20f3075bc8d9d27dc9c19599b63439aebd29c6d33261ee. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZEQU2125945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c280ba11c7d0307cf0042b9ed285634944fa3543c450330e4c78813d96b403e. 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/QZEQU2125967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6050931d1f98dc7a16b5a6ef76f60227cdf79b27659e09847efb155bbf9fc42b. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZEQU2125968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7849c8a44c1e00c0f46b3b05bf41353aeafeab6f14d016bcc333687121c566. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZEQU2125970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faa82c064742d330491b5ab7230f24c9c2e521d9fadd5e9c7d363c64e31e3be. 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/QZEQU2125973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5dc5ef8ad17b89377fb6b938246f91cde892206ef8eeb12a9b5d978b17f2fde. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZEQU2125922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd071af848c2ff6aa0a1d03c05aa90e973a692eff8ed7e10473b4d3e161fea14. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZEQU2125217.
Não Fica Apaixonadinha (feat. MC Lorenzo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a9e7a24af5257c2733987b84bce441c93bb6a76645b438d7acb00845e00a67. 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/QZEQU2126099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9eebc57b14867479475c126616e09dbf3ea09eeedc483cec9312a15748e6b03. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZEQU2126105.
Projeto de Luxo - Espanca Paredão - Novembro 2k25