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 0xe09330f07db4d196c205167b6344aee86548efc169295ef3b65d7d74893a7669. 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/69728202-3d6f-443a-a87d-8e278f32bf31.json and https://artists.proofprofile.net/proofs/artist/69728202-3d6f-443a-a87d-8e278f32bf31.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 0xb4d45ed1ede0525c498b868a96e56b9ac9342c3c35b27c1a731a6503d1b724a5. 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/QZES82335291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ee1fb61ed0227f3555d111a481afec1813117434595fdea07fdfeaa952afe4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNC2258982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f95f8a3150d866210e515df8c71f4c5967236cef0a67b49bab21e79007f83a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES82335292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856b3863fbfbe5b062f1c47fb210eb3189093efbd8c91bd2684dfbe0c060fa07. 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/QZES82302889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82d4c3985ce7b066e7df84c23c3b5219091b65aeb6a4d421c95bc6c7ef1c6ee. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTB82234593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5030c59015a198cbb7ea1bc7189fa1e279ebb5e81c32d14e5d70a15c855cbc5e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES82305413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969224644bea1a654eb20c9b29121300a08617bbcd8c82201bac5af1be88ee88. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZES82335293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b4045682c4e8ddb0376916e80ad4d761ff1171a7560e323ba572633bbd20b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA82362458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff1e8fbe077ae6df425d65295755c88814b856ffd53ba7320fdfb0df586e80e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLS2220010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101491c7155d0136c6c2062e7f239798104be159bb02cc7612ba752278fcf9e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES82335294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a8d499a1fb2ad938f44d3b466be7be38ef13bfbbe90db2055247b47b6166c4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ62210684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de26e6f30d805e0405f22e096600b6125d0073fe822882467066e3634f29914. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHNC2444111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372e2d782aa4845bc5dc48fc852b51a55444b6cccac6bac2d203d19c1601c8ef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHNC2444112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051e24be7488f426c31b5d4d5d96cc50a7c472b21e23026a8dd4252e0127e5ca. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHNC2444113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9d8a7571fbcf52f38c66daf10df65494d7159f01a8bb29b8fcaf1a442f243a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZPJ32320454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbd86a4a3b3f6793c45b8be7bfd53a4e0bbd966ea0bbd42ce826d554de04276. 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/QZHNC2444114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d797f60dc1d426155fc5e873b7a28c3e8702d33dac8f280d8287d8a5f60acdc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHNC2444115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998f44f966dd75c863c5cb977f4ad9bd436abded44ed4541ad5fd460c739a9a2. 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/QZHNC2444116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9d8a7571fbcf52f38c66daf10df65494d7159f01a8bb29b8fcaf1a442f243a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZPJ32320454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2889c021634f63c54bbbef8593acd77c9bca2e623c7e107a526791c4a64fde. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGF2294230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe808ad1c86704172eb86e0ae591da0684f3f11aa1d1b83bce742477deb7deeab. 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/TCAGG2222574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3704f164a752f77b3162dfe83985bd1afb377507cb592c20c477ae1992a38eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAGG2222611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a11c55d7c416e6c0f02301699463d73b9482d9013d5974953e807c8a7214ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGC2209148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9614adeaf095ff856a252cb5f81398d1b0afd73eac14c62a60e5190d5f629c5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGA2267810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5d85305cce33782f2061c6aec9515e9906f8a7baebcbf145e3e524f05f49af. 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/QM4CD2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932f947215c9c5a2a2fa729bdf0cf52ab454f19bd23666cfd64e05926de41934. 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/QZNWU2452064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538a9fc0a073540103bfa18f2319d4d7638cf01b880f64bb279f620ea53740ba. 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/QZNWZ2397263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef689ce1fa771d83f40ebade0120b6f605f17a1f08f6eaf6f85f9ca91352a230. 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/QZNWU2551510.