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 0x46a4a4c3b7fe505c96a36f9691f55c6fee28979421a05b9e410a06dfd3f651e7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46033d2f-faf2-497b-9d0f-e2967fa93aa3.json and https://artists.proofprofile.net/proofs/artist/46033d2f-faf2-497b-9d0f-e2967fa93aa3.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 0xefd9a6d2bd0dafe7564568da1634956171f54637da96f8795fd69aeec719de92. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:15Z), 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/BK8OA2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0450256a1c5a5ff94760d1e40e33b1d49f36132a41ff8dced3f281198a097a9e. 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/BK8OA2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf52b3c6b7c0c640cde7fabac7ecdfd517f02289856db676550f98bee613b0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:41:35Z), 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/BK8OA2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d62661edfdef49e911a7613d2f0dea67a1cef7f750e9eb824d02dd4f959f72. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:28:56Z), 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/BK8OA2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9137e350f1074a8b9fac349b67f4474d36ced79a16d3fd3d5fab3318a2ac09. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/BK8OA2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38dd8280b9124e4bda99552e1fc10af3e2a5c5bf9bbc1aff8b60bfb2a212824. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:23:31Z), 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/BK8OA2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06af3fc1f366d240235568c20a830bc31b52c9b5603e0f51ab9bcca2e25e4cc6. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/BK8OA2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd523fcd38b46bb6f9720a4737b40dc063243809d835e5d945609c75cb8f53517. 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/BK8OA2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d62c3bc82a8b28e2d914ad4392b5bb1a75186fd1db1d39db57737d46f882d0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/BK8OA2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741d96205f052b26194f50b22eea926365537b1569b18a916cbc38e9d9ab88ec. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BK8OA2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1b9f32782c573cc8710f3e1c92461cd0f69bfffb2b6b7a08bed7278c5f55ef. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BK8OA2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf447139b7045316e2c331f0292eed5358783f8835e6ea6611ccdc9a36823760f. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/BK8OA2500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729ecaabda52694ddab40da92ff0f580ffe7d50a7801176871ff47105e67e9ce. 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/BK8OA2500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04673d3bb92da92ff001aa0d184c1269446e2874fe22d6df6e3ba3c757782b73. 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/BK8OA2500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826bf6bada42637c669bbfa97cf90e9d3c4fdc0cbda086f3655438b052f3ac01. 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/BK8OA2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae967bb192c34f7c986bdea9075eb0ad4147c8bc806e080a1fb271618214b5d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/BK8OA2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352f0ab368dc331a281e4fd2b0e63585553cc92a42bd016a38858ae7ba92e7ae. 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/BK8OA2500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d763374748d05a8907d1b69eb85de4b67c3555265517f603f5c7027d6226aa. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/BK8OA2500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb9bcac007faac98293222e0a221f8ad8a473134c0aab624da3dff16c41885e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/BK8OA2500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507e61b4a5fb4712b5fc0fcfa798c550c35bd9adfdbeec341f38df3c93e17bb2. 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/BK8OA2500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ebfdd5f0fd273af3f729efd0219905ed4afa26e5299aaf0a4de7d0230695d2. 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/BK8OA2500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c41df463575137047aaea34a7f13f69a80b77daacb282566c66547a554cc548. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BK8OA2500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d0aa63660739292227808d1926005d9ef038d9febe1b40ea1ae87e9b0c42f2. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/BK8OA2500012.