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 0x2fe8251a923a5fdc84445215244b93a754a293aef51943e6186d85d26c5194c7. 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/f5edaf7a-a85e-483d-ac07-9f5ae2558814.json and https://artists.proofprofile.net/proofs/artist/f5edaf7a-a85e-483d-ac07-9f5ae2558814.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 0xdcf777e7f36e6317088c17c4485fc5812b87bb91467f5709f589f626d18321c1. 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/LBA0H2004109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb45426c864924ac3930f18c761b8de15af710ca5525aaa76a50c20c66d363da. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/LBA0H2004269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf888baafe2ac5a4268629cb29fd4bfa1d1160f0dc4f2772b3371ef10f7f6bc96. 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/LBA0H2004108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd898dd7873fa224a9b708a5690b981a6269f6fd407729419401aee4022300d55. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:57:41Z), 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/LBA0H2004189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4f71355b357cfe3da3ab0c9da157fdf77ef2ecbb8dd63c9e553e6913350884. 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/LBA0H2004369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b6069914c6cc06c6beb8a58956c51e9a307645e3c2aa7e8c3a1e47f653aeb3. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:36:25Z), 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/LBA0H2004468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb8864b6c1782a97535e7955a2bcdc371ed5762f83d7ae783f31b4978798917. 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/LBA0H2005735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f99a3d8dabe85c23c74db5aa1b211a586dbc37e302f89e5cfa418aec039c5c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:39:04Z), 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/QZS632358276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeece7633d951efda8a02c249347d91f63c5b417d0db7de9cad0334a02bdb021. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/LBA0H2006725.
Hatha Ana Al Palestinian (هذا انا الفلسطيني)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfac63710c851164c2c6046317274cf7cd484c1a78bf27a3e621afe1a9ed4b6. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/LBA0H2008407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69094c673ad89281124b8f341162bc07a1738bbda7f5e38427c4ab10e2217051. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:37:43Z), 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/LBA0H2010348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa311ebc8f2ed4e51f5fe13769c2344f8e43d0a7bca05160a68dcd3badf1613. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/LBA0H2011124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95717ad7d64ef2956be532751a4a527f8c8a4f33cc75b86ff78bf42934b28f09. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/LBA0H2012414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeece911b552d01439638ac0788005a0dc45f62d1e08e376b7ff7b6adc30f22c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/LBA0H2012499.