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 0x01d360930d303019d6f446267fe9b3bfe371258356e1416d95fbc6a8b67b147b. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab1deb12-2f57-44a1-982a-24f7ed3d9804.json and https://artists.proofprofile.net/proofs/artist/ab1deb12-2f57-44a1-982a-24f7ed3d9804.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Prophet Collection, Vol. 6 by Manuel Delfi
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 0xa6036876b826512c1eead01a5a99ea037f1ab2a0bf105ea0082aa0dba1ae05b0. 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/DEH741901551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a3ac57368e63c26623f6d290050bb0aee08e619b4ce34cf2683ba81dbe1397. 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/DEH742004666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcdc61e396565baf372da448953acbef48a3dcf5282f5830aaafb34b3096068. 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/DEH742004668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fc6ff7b391e9812e392db2f66549cb8be9c5d4174f1b6a2f2cc7cf96357aea. 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/US83Z2121077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f333193af032ed1c76c93a98706cb4f40d592845d3a54a4d67c484b58c2d413. 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/DEH742004670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ce9f16ea64fb72a691bf72538e31c20ec0b305c8805254d25515a658a3cbfc. 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/DEH742004676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a3931a58fdcf218157388bc7625a33a83e069a2ba2b5857dae32875eda2068. 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/DEH742004687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0848df94146f39641757e6411a94893f0e54f78b14fdad198d2072ee6821042. 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/DEH742004688.
Prophet Collection, Vol. 8 by Manuel Defil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda695d496ee96b530b4fa367792845f17f983337d5b0475629cc365dadb19d92. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/US83Z2518924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70e091c75da7b27199efdccc60517fdd33e35205284c80ba129fd4fbd14df7d. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/US83Z2518912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924a8303d9f8be2470204f7349dc4f24f536c27b69abc6cafcf5758581848e0a. 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/US83Z2518913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ea8cdeacd301d7dfc80a4dd93d6afea14963bdcd0d10547b8b3d6c7285b2e6. 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/US83Z2518914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36efc3e1c309a77397d04a690afbad204e137d2b8b91990459f59d8f360f6fc7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/US83Z2518916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e00f0da95c48e8fe115bfc9bb7f117500b9f171b2704baa49f9806dc97e27de. 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/US83Z2518917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67d7e5fb74306c60f9684b0d1535bd47d6a31e7fa119d99f25df114bdc045c3. 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/US83Z2518926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03000a8790fcbd89df869c5fa24436484009328a8f96b769f7baf5c8ed79bc6e. 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/US83Z2518918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0fd11ecf767d6d08b2be6a682eaf4c958ca837ee3ba51f012c3db8881641fa. 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/US83Z2401483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf767739a6e9287087024a3c3542218e89ff900814216a06e0ddbcf10b9b42979. 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/US83Z2518919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa892fb7c49e0bd1e02fc7b793128b4fe8f56a7b52dfd2fef3e9299411afb9016. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/US83Z2518920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9543879eb8e85a0c1141dac725e0a8ad2ada14df79aaa0b38a7da5e48a99613a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/US83Z2518921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109303be9a2bfaf09fcae98be25a9eccae73a7b2ce32df87a0bcb37913a3e434. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US83Z2518922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd58b494efdc13f77e01d7bfe983341e1a28abc094a76f57f234fc3edc1a991. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:29:22Z), 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/US83Z2490415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07290b76a8166d1091090939cd25f38879ebbb8427025c7081fd4fa3aa68b2a2. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/US83Z2518923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda695d496ee96b530b4fa367792845f17f983337d5b0475629cc365dadb19d92. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US83Z2518924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa257dd2a95ba659f624f3f33ef9d33e67add7316d583e45f9ec7234d8cc38cf. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:24:20Z), 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/US83Z2518925.