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 0x67e86fadb2823b1a1c89f151869eb7e4438b0dd65389427560263363f5e5a5e6. 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/aff681dd-ecde-44c7-8033-671ef0c6ead2.json and https://artists.proofprofile.net/proofs/artist/aff681dd-ecde-44c7-8033-671ef0c6ead2.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 0xc7cba5dc76cb80b80d5479cf022912fca39aba8ffc0299ef6029f9aac50fc1ae. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FXQ252100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6679808c3fe9bd7ba22a4d8ff71b3917333736152afd2a9398b14f1f67816607. 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/FXQ252100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252569ac1df4ef054bcf88923a6627932aeab329ec8bde4bef420b4060c65796. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:23:21Z), 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/FXQ252100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc348a43a21b87d944623d0a376d2edefd4d0624d70edcb7a63d8c78aa0ded94. 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/FXQ252100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c75fdc3522884c008ebd2acf02957c88dd48d8f3091711d1720a89b9b3c5cbe. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/FR9W12304218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2568555a1d1f4d7a892a958e06225f4f4be6c75d7a765ad930f4a586eee23e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FXR592300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6657bf1404dd2683205dc9414845447328fa4b6584743cc115508a28021ff855. 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/FXR592300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fde7e354d6793820277f8e4d624d9248403a36f0e806dff795ade41ad2889e. 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/FXR592300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76227b2f62ff95c04f929f68a5e2fdae3ff73eed2f525f78202f2959015462a. 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/FXR592300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd993ed1e681d87a62447f641bba9469ce492b8d3f92fa3085243dd6b4c369c7. 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/FXR592300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12ac58fde40d7da0b3b67a5367f860ac3b0631ad49abdc9cca400f6aa65f66b. 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/FXR592300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c1021085c10466379acef47748ef4a22bb1dbfd1009768a40cdeae4027eeaa. 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/FRDKW2208170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef9489350d14a47d072a9351fdb5711f817964e54dcf30eb703067c35bff996. 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/FRDKW2208171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c23bcd8c0693ba1f494013dc38658d400a39c3fb584b4a2b0be75cb8ded63c. 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/FRDKW2208172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335a3ca174f6bdd235fc49cca46f623215f61f81a73b247236412b18ae3b2e13. 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/FRDKW2208173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f77ee10796911c02045187f57b6f185ec92249f44e66055c860e08cf28b5a34. 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/FRDKW2208174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db1b5c9fe63e766499bf3060950b968e717301502fc72c2c0e72d6be1447e35. 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/FRDKW2208175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae495a9e016329e76477675d7471ecce340be283700195de415eed17f7da020. 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/FRDKW2208176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9521ef24eae1704375069d67c339f3f17137a06e2cf83cd5d2f78375302ad10b. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/FXR592300433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff465ffd54fbe07055129bcba5722a289e9cc2f5314647d6098c2f44e681b74. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FXR592300439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46cef7dea728b678f0f5936ee45421ef5603699f3bb238666a9c588972eb486. 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/FXR592300437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dd3ba2eae59a315befafba65b391549405fcb8d299ebaa1618a4efddd150a6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FREKG2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82236a52339440e4aa4dc47d8deddfc2b1a626a50b7a31280cfc5436534149d6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FREKG2400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ccc3eb665c7000061299021d8bd1d251752993672b768c7b2c3457c88a031f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FREKG2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6e0e41ed2853259ec28b134ad55ff2e8f77014c2b6bee654e677960ad87e03. 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/FREKG2400150.