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 0x960ef5b9b5a3c3063367e72e11dabc112a309897d93aeb8084b67cb864ee4a95. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/433c34d6-34eb-4c80-b7fb-480ff1fcb180.json and https://artists.proofprofile.net/proofs/artist/433c34d6-34eb-4c80-b7fb-480ff1fcb180.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 0x4b258be85998cd61ffc6d2baade8e8a01b52c1b13541cec4f3b56739e4dbfbd8. 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/SE5IB2101766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a0f271761db6e5e9854a070cf604f9405da5cd57f8eb1aa264609ec2ef9b76. 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/SE5IB2272673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366b73c10922d7cea32f774506388134646c848e6833186e369d2209c3d27bc2. 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/SE5IB2272753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4139ac1e59a2221002aba1c944bc0af90c7671e6e00b68bd7f4a6176c08440bb. 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/SE5IB2272785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50062c303a73876adbb9067abca20589316145339f992cbaf9939907482c3e5c. 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/SE5IB2272865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4807a43de4ea839d4dc1dcb8f43b29b9a6d443ea2ce5603023b0dacb124307b. 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/SE5IB2272881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630ee8277460a09b9ab042d295a7b4a7db4c339c6c6d60630ad37bc0c3ed5b67. 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/SE5IB2272961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be2a0cc0397a4329bd3a5ea89ccb1f96819638cd0b2f8334faf1a2b2373f1a4. 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/SE5IB2273025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052765c83dbaaab1ff88451ef08fd2a114854b61829d6c8ac7ca0cc6670835a4. 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/SE5IB2273057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817569c82ec2a91a6f458d5eb220bef7f5775a447fc55aa347d7b216e3a80e62. 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/SE5IB2273073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9a2f409e13cb3f7a5aafaab17cd655f33bbddb7a81015f134d5b71c8c3b15a. 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/SE5IB2273281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d548a16643e93726724c3e3c3ab51025b4ef949e6b5632c6f35b0dd6cbec3ba. 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/SE5IB2000854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2352e2d88e11f5954e0b6c499c358be48fe33d972418394794613a75f0ed7bf6. 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/SE5IB2100623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d3076150b1d471f9e5e7e953746c44290b25a74eba4b172d26771edbba37e7. 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/SE5IB2109613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42241cbb887e7736e31d808052d6261331289abdaab97354caf3fb6da38345e0. 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/SE5IB2153110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2061e06bca8e9e154a4a7698bdf2ed0493d8251c64095766aa6257b611d9045a. 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/SE5IB2202785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773a6ae78315edc26c31b7f751915952ea2fd4a07d757ed446caa5913cc48bc3. 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/SE5IB2202369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81eb8eceff37a023468b856d70d4bda3778bb67ae62187b2aeca5fffafaa847. 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/SE5IB2217041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901ae2a5706acd8233997cedff2f6b7eabaf26352443ca2d1b205d872b9e54a1. 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/SE5IB2217057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c2c44978b80d6259a317bc8192c005e8a3bc3ca0ca3163aa978198df47b0f3. 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/SE5IB2216977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29becd8e63a9fa87d6ca98ab500019dce9c7fba9db8ab6297f7df118bbb5a09. 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/SE5IB2217089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fc51060bbf5ab75532ca27f4906c9119f4974e000ea1fe8c5a1fee9790eee9. 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/SE5IB2217249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3687e8c4948baebbde0a291c49eed197b23f39bb281c5956da16cfd14282fe0. 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/SE5IB2216721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe314d55e0ec34b0641a9be784af1f98c83012360cc7ed82499d2a9c5559346c0. 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/SE5IB2217105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9fc9c1d41bce9cc3938164b0c4cbe99193b9bea67e4a4c987707beaf22ef56. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE5IB2264033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d9ca385dc737450f5e06d827a4fa641263139a39985c93ca2ee4e91b9ba2ba. 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/SE5IB2264081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3791aa3ce9f88662ada569d78fa784948a850610381d1028a6d437b349c420cd. 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/SE5IB2264673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bebcbd7e4e320a257e88c862cb19e28ed37a08c956611c130002aaf8acd31fd. 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/SE5IB2264705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d05d0e6ddc79fa3a0205edecfd8326d10f9c8df3b5067166b871f4f962c763c. 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/SE5IB2264737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752cfe81ada10ec09602344aa51eca2d64b3f043d6efb559664b9d08a0a18876. 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/SE5IB2001522.