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 0x1aeec32b345312bdb851797eca61b5d4b9c02a6c13cfd83e617d0dc3e5d4763e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/303a3afc-7401-413b-bfb9-7b71e9c0cc9c.json and https://artists.proofprofile.net/proofs/artist/303a3afc-7401-413b-bfb9-7b71e9c0cc9c.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 0x4abd0d97d957c78e7662c17b8920d0e6be1ea0dc37aacea2720c44ae868aa587. 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/BXOMB2100002.
Dengo Meu (Ao Vivo na Prainha da Claudinha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303521d110aaad5f33d09c57a776a48e5d1019b4bb3177ce2fb4c296dc267373. 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/BCCIW2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e27c539a73126e13043438d5ba3e6a45f3b4e641a2dc9c095b062f48a177ccd. 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/BXLYC2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ccfe476ad9f2aa156b28c2f947a5ed1d5ca2d695a5c51b4ce44c0fafe727f7. 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/BX6UR2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d50d6817d10cd6fe83317597c457d40200b18b123dfc411f002df4165829f6. 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/BRUM72400678.
Natureza Sonhadora - Tributo a Accioly Neto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b2ebcbc60eabb2eebddba53923950793ab64cfeff4456deb2e6c3ea8c4e4d2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXTY81900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a0aa9650c8dcdab8286280074ffeb1fc8e3ff44e0c1fcba93e8c76ab50650c. 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/QZHZ31975446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e70989b9b7d4a1a85c1f9b27dcb49b8c71aef100f94d49f100dc5e1e60d87c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRUM71301378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9183b11194df46472980416fc51a2a38861a4ed0a8a355d8e025a28e705e27d6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX6UR2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca951add954ec24e6df3d81fe713a8f96f0d86f1b288a3644b4d19b851231c49. 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/BX6UR2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dcc6fa2598316ade4018bf087e6df2909ed51befb6e1731c696d568162c22c. 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/BX6UR2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79aa8e500d45f9366f1abf8fef3d2e9651f0bb98631c1fd538e39fd9675ce82. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX6UR2000009.
É O Amor... Que Mexe Com A Minha Cabeça E Me Deixa Assim... - Do Sonho De Um Caipira, Nascem Os Filhos Do Brasil / Música Incidental: É O Amor
Sambas De Enredo Das Escolas De Samba - 2016
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d8e2871fa63a41f55803a9e557612e005af2a4ea1b67dbbc6d1e723add18b4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRGES1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d8f04bb9c98f878400da706f085f071409d16033b10064ebe1a1554d22d441. 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/BXLYC2400003.
Medley: Gostoso Demais / Isso Aqui É Bom Demais - The Voice Brasil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf29d25db94d9579ccf8557048b76b536c325c1e4ea31c2f00ba790d5145a906. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BRUM71301420.
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 0xd1f6c13970724483459cd5a36b5d5e83d8af629d9104b32f0b017b8256d49499. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BX6UR2000008.