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 0x87c4006ad20da971c7f4fc69aed8bbc1baff13c5034822cba446772c97f02ad2. 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/86e483c6-ec01-4c8b-8701-0df9dbe3ca6a.json and https://artists.proofprofile.net/proofs/artist/86e483c6-ec01-4c8b-8701-0df9dbe3ca6a.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 0x734c065abb6622ee87925b8252d09d149334bdc9f435a04bff616ad046f0b623. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCJPJ1924907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19378570315cea13708f322d82344f0a66ebd56656b5fb2b9e0d2f3a52c92325. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPK2091653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13988b34bf76d58bfb5f0f78edcfea49153c65c8f9f74afc6619626db886959d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPQ2138702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042adb98b1683fa350bf161cc3533f45411985214e3de6bff042b9650fe03b35. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCJPQ2280113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3329706c649e7b96ea701c92b7beea824d98c38f4c2c460fcceb878e509e2a46. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCJPS2200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19164e57afe34e0d05154a6f5b9fe44b6ff74d555e43667b9a0bdcfb28a37ec8. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/TCJPS2275376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb743bed23cad27af93a74dc342dea92af8b1001a0bdda3a0619b84908df9ab. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:25:37Z), 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/TCJPW2334681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffd2e7f560a34fecaee622c5639b03f7ab6af5e9c0629419ded148fb5cfc4f4. 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/TCJPW2366095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08948bcbade32ab0ea341bd6ec1cae5922d16775f985b956abcba9e517d248e0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:56Z), 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/TCJPY2366032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5251ea0dd53014b4436a48f01282be760c82ea2d2043183c0786ee8b91e8e90b. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCJPY2366042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e5e56c92c4d6b61b4ae495d99fda5843eca1f9a0283631bbcf1ee729d0bb4a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPY2366085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b130e176262b3df7a9b4f58a2c83a06b3c62d1b86a6b83deec62723831474b9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPD2553248.
ハイライト・トワイライト - 僕等の青 ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4746b1c696fcd3f351d6ea76c7c8f0ae8e825735c0060052ad7fe2c02e28f865. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCJPD2553257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345be6a26657434e023716ab8f1e41b92159cf3b9958e00c35455990d084e50d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCJPD2553259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe727c4f048ee3ddf5c1b69d0158def6e3bb396d4eb0c89d6effeffc97d397a23. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPD2553264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f02f3f6f54ada15088b69ebe61e474e9b0e0f7860752503508aec47406cee9d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCJPD2553268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bcfff63574dfb913ce8fc1fc761736af995c2719f466853b75915718949aa1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPD2555237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62abe679a8c94f54a0ba2ff4884bb2a48ca209a1aeab2cd6c8669cc058349643. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCJPD2555248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1074e96cacdea0987ee5588f51234ba65893063e55cedceeaf39b81c334719ea. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPD2555260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548a1b1d4bfd91d6df5be6a94a0239b847a93e43ce76593731a9685bb293a937. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPD2555268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe137f1adb91348ef7e50dd093d31469ef14af526909dc7369b36683b2559938. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCJPD2555305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9a5fff6cf7bcfc2d9c93ae60198a4a8413ecacc4cb04993758d18c0a90c3da. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:30:35Z), 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/TCJPD2555312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ede2bd814551e3e8b3991526322bd24afd2d7aefff54db8f570c9ae22603ef7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPD2555323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a3d7eb58bb355bf83d9258839b004f4bfc870a632943ddad8a7765b0f8eab7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPD2555332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2667d28537442aca6446c5741cb0af0b46945b519c0a8a2ed094f44bfaae4e50. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCJPD2553227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f031f00b541f324eca8f23eafed2a4d8d86811935cd945dde3e8db974d2d63d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:44:47Z), 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/TCJPD2553234.
シンデレラエモーション - 僕等の青2 ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3198d5f0ab6d13286830583f552af943e8f59a900c0d3467a1c3a27411bba08. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPJ2539930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa411f855bad9fe600269cf39bee75d38dc1a81cb1b529ee17f890dccda75d7c7. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/TCJPJ2539960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cb233630194c9b56571a880e4012702e1fe3ae8fb3c379fabd9007c1f6ffbd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPJ2539986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4c889aaba5d46874325190f2705f7f7d6bc40f30d5ae0ba436819a606f5eb9. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/TCJPJ2540017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9732a2916d65f1e345b0fb4ded4176a8a171a13b52a4cc8fc460cd25f2b57f77. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPJ2540019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510be2205d60c6693a6037cb522dbea2dab4282bdf3ddc863064ba4dea6223a6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPJ2540089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c9894648a1658a32e756d70b1cb78e5d2d94a303b5658261c0d86af2b7de71. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPJ2540138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe275f8ecee6dd2feac923f1681b881f94646df86dbc1a043504d276d95fb797d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPJ2563864.