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 0xda2e9c040df57a9bd4594f9d4e1f33bc71e909f06ef20cf9e9631842b10bd37e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0bf88c9-b05d-45ec-a226-f649890ea9f4.json and https://artists.proofprofile.net/proofs/artist/c0bf88c9-b05d-45ec-a226-f649890ea9f4.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 0x43770f86ccf9aa914d46b66d7bd7ba1c4c930d4ec8c0470c3fd37b29060a97e9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRS182135471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd265d907d5fef3b12fd369024b931430f2295855af8d40c00610cbdb2152d92c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BAA052025497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23001664b0a0c5fc2e3bc9fcbfe8752c5c1bd064dddb0285a2e5242b6abe6155. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/BAA052025504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e80c343bb722e31305c1529063060d74896d587bd7f1bf4dc273dde7d4d2d3e. 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/BAA052025507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c708217459b92819ff23201cde698de056dd7985278a08cea46966d4c29bac. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:29Z), 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/BAA052025508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5213fe8f7ee5880d415569e7828c08030ce183e6fbdea8621ceb486d135f8a32. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/BAA052025512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bcc6db033d036b797482cb82c356736a54ed64c592327ee8e5cda8ed8245f9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BAA052025516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ede1bd2dc80fb8408b05f29309c6fd7588300edc1caf92947dc65b86f04ddd1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RSA221810970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cbaf536ac5d9dcec1ad3e0a3c32470de094cb004d4ab95b8667cf3c67dd3df. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/RSA221810974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32649039e794ad354dea81226fbdafafb08e62536c88f2fc3031ac7685cd109d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RSA221810976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca3d08143288e43070d4d7cb5d97d36055dedb2ffe1d729630552efb850a8d8. 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/RSA221810978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2b0b489ad06c3fc4b528f580f2859c812931af259b512562644d71ef61e792. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-22T00:02:04Z), 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/RSA221812093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ddb934da66c7c2521184c72b9a1942ac105bb9c4cb673fa45ced22b8a28b9a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RSA221812094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb51beda26672661fa175062012e8498f0c7f88240dc282d31153f0a11f7d0ab. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RSA221812096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88be8b6e34ac365b79450d0d0576ebc2d3f9cde6f341469fe7f56e245a293ec. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/DEQM91205712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9997db798b482108afaa24042cd01cc423451369d62ac3c9533657a2ccbedd26. 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/RSA131406724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5f572f6daf12607a4e44cc660176f421c2d6b10cf692afbd1dcf49a464e45b. 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/RSA131406719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8558dbc905210c9d8b4458d830b6bfaf0589dd8388569142620e759184105526. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/RSA131406733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857e4210d9085cd33aa1e385e0f0dc2db54dd757e6358f44d896f2e47b9ce203. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:39:44Z), 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/RSA131406730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d9a55d31a5adee441a1d42332c5ce24c31149eabbd34aef795ff3cb8fa59a3. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/RSA221815573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa383855191d12afad078778e982c8039a8ca53cedaa0dc59ac25e2c32dfa5cec. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/RSA221815572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43445bda046b98f61a3d38b87dc49f5e1cc0a926fbd7abba7726c09ac3f562c. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:00:52Z), 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/RSA221814958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59c238a522d9fad0f32495ddd9fa1a772a7bd6e3cf3c018c4ffc7a3f7e8d93b. 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/RSA221814959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33b36028a20297b8289ab83801b7637b8669d87f6a2a93ed7296b3abdfcbf8f. 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/DEKB72430692.