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 0xa5ca9caa73449aa22a4a5ca0b60c7874b95c7ccdb68f905e6c5ac5d854e5b854. 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/e22a0be6-1b41-4ae4-bcdc-65421b0aac8d.json and https://artists.proofprofile.net/proofs/artist/e22a0be6-1b41-4ae4-bcdc-65421b0aac8d.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 0xb6d358010017afa7c74d39043c0208efb309cd30ea25cae01ae5e053b5b492c4. 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/US7VG1769445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4114e41fda74e0816d248ffc3fe203ed8040b0db3d17f0a2cb298663e59f3489. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/BCP412100003.
Piseiro Minhoca e Minhoco Versão Com Respeito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369d1b703c1c009356d8cc9ca9a137a800e570f60ed145a24f82ca88e4ef4396. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJW2195953.
Cantando no Chuveiro - Rock para Crianças
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67a087f84f2052801a16285127c0c9009a54432e3024c10f412d76f75dfa988. 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/BCP412100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49126bdb27035c02ad9bdbc91dcf1aab27e0ca0907fd158cd6024e86b4fdb2d5. 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/BCP412100011.
O Hipopótamo É Ótimo, Funk Para Crianças
Eu Gosto de Rock And Roll: Rock para Crianças
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d02045218a03b1bf4e127412e135f329ab4510b1bfb3047bd44f8d8438f40a. 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/BCP412200003.
Cavalo de Vassoura: Piseiro para Crianças
Dança do Pinguim - Funk Rock para Crianças
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c0dbc3986aee3d7d8950db9326fd12c634c574a43988fdcf8088c4b74b6361. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/BCP412200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dd6d6f0e0490763df093f74f11ec89f9a318926adf8c90acf5639bf403f108. 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/BCP412200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe8c21068b215343314fa7af632c8fce6ab64347effb51ee02e636fe96dd41f. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/BCP412200008.
LÁ VEM O MONSTRO - Funk para Crianças - Halloween
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc190dd76f41acd8a0a61ecdeebf54eb94d012c80104a9ec9d2d69ba96116fbd. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/BCP412300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc298dd22e09957a9acaaf965c2cd022a25b6c4defb29ea31206d3ba2fa60012. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/BCP412400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f775f0dce2706fcc85151bcb045bf873abc5e2b8233bdf4114b7de85547e11. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BCP412400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f6680a1fd4396780d383b79d760281ab0f88993920d88b86a1d8750b222562. 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/BCP412500005.