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 0x28c623919f5823e42641488bae79df5c1a9b8a3d3e27fed966dd1b4287e236a7. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f26dd037-34ae-4ec3-a903-6722679c9632.json and https://artists.proofprofile.net/proofs/artist/f26dd037-34ae-4ec3-a903-6722679c9632.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 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 0x7ab12ecf7533c54718f488fed8553e25f181f3cf3753d0839be16d8ab60c364a. 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/USCGJ2035275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5a9bf47f522984104deb9957d880fe3085cd6fe0e650e41fbe9eca4e47a73e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USCGJ2035276.
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 0xe736ef3ba442249d5d64ec4dd54a341cf6043d9c92c868808a2770e51ae18e08. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/USCGH2419651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc888b29e3793b24277327ee7eca9fec38812828b6d2e66822acb3600d0e9105. 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/USL4Q1807743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bad9c2edc9f04b10dd1b2ae962cca8dc30c01c1541741d1b0df443ff815d60e. 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/USL4Q1807759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e2e757e39cef8b227d4f68faed8f7d69a5839eca36dd108868408cad75adb1. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USCGJ1775247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd5272c3348412535d647f0f67d4cee249d04d1097fb704529fcc37c5e0ae44. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USCGJ1775245.
Mas Que Vencedor (feat. La Cuarta Tribu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cfa9c23dc3b3bb35a3d329861d0c1d90712014447cbad838efa8309e465cd0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USCGH1901770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb04ece51af5597facfc3f00f284cef819db7f033fcfa83e7c3f85df91501fc1. 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/TCABX1422940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a1f7efc89cfdb7501e84d3dd659216a35fcbba1ffe6816c91cb4d4dec84e7a. 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/TCABX1423216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7246998c573389953df314504d75f46744ec71c3ae06e10c33e40252f3d80642. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCABX1423262.
No Soy Un Cristiano Cualquiera (Version Mexico)
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.