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 0xad2b85d0e43dafbde11f92d24f8dbf925b9b44be207d75a365930be5e199452b. 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/d4b22a3c-1f10-4a26-a4cd-59922a9d5497.json and https://artists.proofprofile.net/proofs/artist/d4b22a3c-1f10-4a26-a4cd-59922a9d5497.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
No Soy Un Cristiano Cualquiera (Version Mexico)
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 0x7427149ef4e46cdfeff7a0691cb328661db73cb3654a1d3792207e232db91178. 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/USHM91830462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634b2ab3762cf1470dfe68edf236c1720393672ce2b7f513fe819eccdb5f1421. 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/TCACH1559165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96cb3a9737c844542316fc647e66bdafa21016fcae3f5e62d940b96e4e44b21. 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/QZQAY2114798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e6f5a0101e31f437183db8cf8aee3640e084a6ad3756e56941a155410a6cad. 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/QZQAY2382280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688c92cccca90d2db80f36d8221484a77c4d918e13d1c2c6e827084b61e1b9df. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZQAY2318897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2bbc3a2710a1500fe4df319743bdfb3f7ed4a4b6a7e68efc6b91752e8bfb0f. 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/QZSYP2266018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4b5bcad5cd9dad7c89d79c812f9a105fddb27b3cb361230e82720ec482f71e. 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/QZQAY2305962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3630580a3cb720222c4645654ff0c4ecd0c396603db75cb5fb8dc5bfbe64e8. 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/QZS7J2222278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96cb3a9737c844542316fc647e66bdafa21016fcae3f5e62d940b96e4e44b21. 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/QZQAY2114798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0535723a7e4dd2a5b64a8a66b13973503cae4a493e0bee56e25eaad7eb871298. 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/QZQAY2391163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb622fa9ed0825b921b0230327785c1129689d9da10afbd5f506ba8f2057c5206. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZS7J2121679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9529066a4d42b461470f5d1a7ab8aab8f0299e6888460b0fa7a93bf6680196. 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/QZQAY2307503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14325454966a6455f2a38829ea1450714061ed0c83071bd75d79fd0fcdcadae8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DOA0L2000009.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebada9f488447fd450b6a7d07e9a2c40b55b2d7c563ff9a86644def1b988c65. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZQAY2304887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2e8768231c0d0863f842768daa978b9c3400be079115ab5b75c95fc24ac4a1. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZS7J2194285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f08b5ca11197f8a8700526793ed81169d39021ffd5f123713dc1ee7c927d430. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZQAY2353524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1828093962c1f6a83d4efc2d275fbd654b5784be1d7b3ea14913c95d7728d3b. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZQAY2358549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057470c993f4bff2307f282a671fe56faaab4473c069b9e19aff30a36c988964. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZSYP2288386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a173cef154ac1be0a91f0be9d312246a8d8c18300da43bff459211b4be7eb7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZQAY2345129.