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 0xb8f404a7d5d26cfb0e997ed11f29bcbc6b6e552c6c49f695fa50653f35f22185. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c396c49-26b5-49fb-a867-3777d03a1761.json and https://artists.proofprofile.net/proofs/artist/1c396c49-26b5-49fb-a867-3777d03a1761.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 0xbec6e396c313dd7310e375421bba58677ecdb4d447ba9c7743c80ee2b3c71bd8. 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/QZTAT2207160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728f053a0abf3d69b9d0854f3d8a94395761846eafd1f71bed3c8cdf74e19fdb. 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/QZTBE2389614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596cb55bd5f729f7dca4612cd31467fc2f065e1f2579aead1a1fc7d344da8222. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTBE2389617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947d94f166474dc21bee769aef301e073c458ef0e0a3a7596ab7988ee2b8525c. 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/QZNWV2253961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433e53749813b54f72eabd9a30ccbf132dc608bd5a6acf0d8f8a8cb1d6ca1a2c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTBE2389618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e12a553a4ce1a190a8e31dee8ceb5881dbefec81a550f61d82c80a0db2272b. 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/QZTBE2389622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9857afe9cb2132d263dc3b7439e47d32da0ebf383a4e1eb4b4f40af99a62d624. 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/QZTBE2389624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ceb5dc38d7c61208bc907108258d8682b71502fda7b10b6a6c82ac91818cb81. 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/QZTBE2389625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbc353a63aad345e730abb5c995f51d4810b24c7c2d99d040005ed5c44cd37f. 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/QZHNB2398353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e623d8f717ff4f35564668e68ee0cb576e65b1ea55e3e62d6d5ae370e3c5a2. 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/QZRP52291015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fd6bf47e5edc55ca169c2ba52d9330a3cdf6d0442b4cd52357dc1b775c960e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNB2398354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1223c97b17b6fa70543daa88ce5fac76cd15a4c980b37a905f9b74e5e0cc8110. 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/QZHN72353992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2633e604164ce66d351072e5f3d0adf954819815d52693106faaa6a1d56b15. 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/QZHNB2398356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca4044a57967bbc1660a434a0bc268b66aca2a0e729c9feb911411cf1f8fdad. 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/QZFYY2359292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ca9a32a5563c574de9481621df074916478215d407b79a7ed1f9ae8a13afe7. 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/QZFZ72343224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa753bb32b45a101a3ad3d547be58992a8062217341a500f313d3cc26d3ba5d6e. 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/QZHNB2398357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf07413bab5084733d64b41c10394e62fd38962f7d844e3df84f47b99c83074. 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/QZHNB2398358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb92eb24fb815f6dc5c37dbd13724dce08f7be0d36409e83b101a10359a58ac. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTB82355048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caef38de905e6eb52588f196d4a24b6116578f22299a60343349d0974facb77. 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/QZTB82355049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e4914181f2ca2a627f8c285993c7dc16d8661471980a5e4fbda103723c702d. 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/QZTB82355050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b38f29954c1c4bfd6f9339b09ab4066e0ceae042c135570c2056c254293fc5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTB82355051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedb8c2d590e449dd27d1be06473830100ca2724ec25a2305b21c0ff8b1d0329. 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/QZTB82355052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fb803dbb78be9f0ff34bcfdc8bb5fc1f94a3ed9a5fb5c2aa7066b455172cd8. 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/QZTB82355053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306c8fd98364e78fdfb978476b75288ac79a1d199c66be23d5989fc3783860bb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTB82355054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ba86545d441fe9ffe9f9638b10180e141c09eb400fcf2b6e2418d0070a8e02. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTB82355055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9746fd9a24db00be566bf99743187e96d80a4762964baec823f97dd9fa78823. 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/QZTB82355056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e498953d59a58c353b63e712d8e4b9eca08e118f875085916d11509d2b3399f. 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/QZTB82355057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e623d8f717ff4f35564668e68ee0cb576e65b1ea55e3e62d6d5ae370e3c5a2. 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/QZRP52291015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3975227fc6ed63a7f15a8e85891c58215dea2c4b730884ffa975063c9749a249. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6Q2445935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b02290740e4b04ff78fa9dcfb438d54acc4a890decabc4d5ab8697a79297ad8. 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/QZK6Q2445936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc329bdc09f419fd966a170e84a40c68db64b96d0cc987b43c68aaaec6025129. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6Q2445937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83753f2edb2800248df4e04378ae52bc44e96002c345190aaaf50322999316c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6Q2445938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca070c6d36fe7e20fc6551f77d2fae642d99532ad9c340c5cbb62c2d257a777b. 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/QZK6Q2445939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35cbcdf3b0ffb56195d6d0411bf7b7d07945896d9d003f959c09fc682fcd258. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFZ72369872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c603de1093e163e98606e4ee57adb17c2199378152bf75bef4b553b6791d2e8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR59R2263774.