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 0x23160f0945fadc3743dbd43d1738f6f90d498a1141154f93f162220b817c696c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5748e390-d7c4-4a75-9027-f47b7cbb87cf.json and https://artists.proofprofile.net/proofs/artist/5748e390-d7c4-4a75-9027-f47b7cbb87cf.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 0x07537106d88908dcdfe785bc8d87c75bc307eb9b29ad7dc7d882353f6e2e6f31. 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/QZYFZ2415283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09022e287d2e8922c7b41bedd0e75d21048d10f885326398a014b7d526fccc46. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZYFZ2415284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b59a54c8e5e5eac5f585722b071ad022bae9cd09aad2e1bec78d5a225b4749a. 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/QZYFZ2415285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee530308a457909e7dbf1d4171e09b6ddf7d9c06393ea38312ee3c57f6a06f8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZYFZ2415290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce045a8a14ec8644de20fc93e41052f70bde3ba19f4e6ff5de0900f8d1ffcff9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZYFZ2415282.
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 0x90470a055f58bbc629108b987c2a24163b0f28cc8b2c19bf5c54ba61953e51ac. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZYFZ2415286.
Pássaros - Homenagem a Chico César (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f71ee8adb48e8f748c26ac3c22d88fae635d456fb5276d82bd43501bee8ea0. 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/BRV3P1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba94d122f0ca34abec0ec8237226ff8bdafe0dfbf1c85f2173ee143d52c6796. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/BRV3P1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc285ed485aa12ef38c99259abb5e503283722af719ccbcabf36944ff52136383. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRV3P1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bac554c441b85b4ddc6af42be084949bb3b5c5241b0b05ac633ed55c877331. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXKBP2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645789d2ae9ffcc9006ba0e4cc8e23b7868798df37e50afea92db706da7b47e6. 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/BXKBP2200125.
Aquarela Brasileira/Incidental: Um Pedaço de Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa570782f29b1276f67bdbd791d9d6549019233e98c870add309a0c8f8b3bd8ea. 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/BXKBP2200118.
Deus lhe Pague/Citação: Rap (P) Agatha /Citação: Dívida Histórica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aeeb5375a104e45f6424e70fe74cebd226cfa70dd266518c0672adcf76fbc6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXKBP2200116.
Para Lennon e McCartney/Citação: O Vento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00717dfdd46f0caa885f6b226028ae2ca9e3e04ff8ba12af70519b10e0ec70f3. 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/BXKBP2200117.
Medley Nanã (Coisa Nº 5)/Honra ao Rei/Dança (Bachianas Brasileiras Nº 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cffa2364ef0cde021634a6b7ba0bd0e4d17aff6dd1c2468fe81f3d17e45feb. 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/BXKBP2200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6737d99cd3d8dbe33739e4359484c143e3680b563533e7aa0c95cf873435cb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXKBP2200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbe405a3072dc5a02ee20d51698caaeb6c5522fa7f36e1504d6dde00e2c8879. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXKBP2200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29100014a1d4c02063b58c21537753a8315a4348fef21af05976a97f6f5051cc. 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/BXKBP2200121.
Guilherme Peluci & Ad Hoc Orquestra, Vol. 1
Coleções Porangareté, Vol.2: Feito Notícia Boa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584fa5480fa5b548752c6ff164dca22e00da44d018eddb3a30a49c9be528eed7. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/BXPNG2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423d82dad658f3c6e160ce3c2fca5de3684f1be4fc6218a15bf0783abbd0bb8d. 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/BRV3P2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed1b38b664e749aebda4c1b91149df8fafc36c7a21f7b3764e69db633722f6f. 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/BRPUI2500112.