William Reynolds was an African American railroad worker. He had no prior conviction before he shot nine members of a police posse, seven of them fatally, in Tuscumbia, Alabama, United States on April
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 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 0xea17bf881adc95187915534a4fb55a0d6d2ad88ce724667574d75a8cb9a9b9e2. 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/98332b76-d3ae-4c5c-9ccb-5c4af5484cbb.json and https://artists.proofprofile.net/proofs/artist/98332b76-d3ae-4c5c-9ccb-5c4af5484cbb.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 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 0xec765eb0abed0a1639be4462373980ce56e80f48a5c6ffe50f9e29350898d09e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZPLS2249008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8405d7e2b87345f93b99571b71e7ebe34430f0fe6f0ed12e5d137af29779d633. 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/QZPLS2249009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44077fc67edf872afd1bdcbc99496ee0df45456b203089ff2856748481b8856c. 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/QZPLS2249010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a5630d847c81f5a8bb71e1f95eb61b8ebd6af93d5a952d03cdd6b3ed2d6764. 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/QZPLS2249011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd741a41b3f844975b1eee5226e7b31a41b0c5e71a68a69e1ede0b4d5cec77b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZPLS2249012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa3ab4a88374d6c77b4469dcb694c361de41b07c47c28732b7f1d95f29a2c51. 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/QZPLS2249013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717b88f20ff264b247e553f7bbd5cf9e82a3f75406a84a90ad8da604bba3d05d. 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/QZPLS2249014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4843d8c0135147c4908dbd18b222c674fc9beea2ec10296dbc93c82046419416. 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/QZNWZ2219493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dfb727d36ecf9ad15304aabcea67762ea3ca72d0a1bad68b69484d0daaf699. 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/QZPLS2249015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4080658c84a52c899f8d15383b45606e2a41f6a5e62c56494088d5267269808. 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/QZPLS2249016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578e7d331b08a8b1cafd8c5ec92436be06cb0a0da0c1f0746745e067436e11f3. 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/QZPLS2249017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9694d905fa092579ed7a93fa5965cc935d41a5e9a994c0c7efce90bea0efd7. 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/QZPLS2249018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2629d176e894a3032b84b13b20321b9d5924ebfcea2d7d84e905fc09e68563b0. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZPLS2249019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559a9ff0f1eb5a40a9f1bf27853b3a971055427428f4396fe34ea09479cd82c0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZPLS2249020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae5194bdf07f0e216185c376f528dcdb7832aac5291f47bcd0cadfbafa6e2f7. 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/QZPLS2249022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74765aa0c0f5a4a7e55f1307c9afdfbe71a6f77e116199a709a533c61fcf50b5. 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/QZPLS2249023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fa179c5defa2bbf7e91311c167a67f00f6887fc8f6e33b17d9669ab0f1646e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZPLS2249024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c87abeaaa65d7e090fa5e981ea991d1e96062219a3f40e47a5a9a533c004a79. 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/QZPLS2249025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba812af9937a750a11a87c9d37ddb875ff3ea11114c314052bea0e97138c56cf. 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/QZPLR2205759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d9213ea8fa662d226605038140dc0635d5726c3602ca5482770a707226ed29. 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/QZPLS2249026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d9f939e2c7ade27e2fb2aa812035c1207558c85d4eb0ca5e2e5d8d265d0740. 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/QZPLS2249027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e3275304b51971772ee82ab885b79f40b324095187a23e5e2b237e59981607. 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/QZPLS2249028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ec6aab8b01bbdd4d1d298a23cf2a760622acf556ac996a03ebf704f71ffa3f. 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/QZPLS2249029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bbc7a8043c830f1577a6f81bde584a23ff5b1969152bbb8d01815ffe7e530a. 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/QZPLS2249030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23600dc70fe1b048f66f74ce4c6fe8c3169b49e77b535b5c432147d1597108b. 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/QZPLS2249031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9450d7f6118a02fc1b3f9aa0e2767c0e43d9c681f0c5ab0bc7dac2d199c28c53. 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/QZPLS2249032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2b7e03a4a04e938035430bcb1ae51667a7a2f6e9aacd24ef2d7f35d2d1f8f0. 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/QZPLS2249033.