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 0xc11f61966fe4813b5ed2a0da46ae5921a43f7fa274c482cac057717060cb8a2a. 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/d23f8a8e-9880-4687-bcd2-031f2847d3a5.json and https://artists.proofprofile.net/proofs/artist/d23f8a8e-9880-4687-bcd2-031f2847d3a5.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 0x884b412e752608d854eb28fb780e05a1dcdf1a891f76378b7e3d16a0e7ae431c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBSMU2674153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f77c2e0adf2c5a75c23d2be440b205dd50985b386fa5c0d75b88fe6ea398a24. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBSMU2674154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2358a8481416d26306afb3e67d9522204e748dcc24ddc6f8091aa21f036db9. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/US94P1817801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b499ca08f60c9c8b7c3bd1ed938110139be120d82187e4d7e7e006e1c4af39. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US94P1817805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0f48c4e8abb5b0eb453f3bbd3a2a05b091c109116e0ffb7f29ba0e7f319247. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBSMU5607426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f9ac8c0dc4c992aeac9a6cfeb8c4dd5a2678ce0f57ee7e3eaaa6f1a7c2834d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US94P2019901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e26da24f6be1a464cec15140ad070a504a370c29e512eaa5c1aa8df09defdda. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/GX8LD2405477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85d5ffce9effb013a3a69b23d0036ac30102383d9f891d27fbb53f254202881. 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/GX8LD2435332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87d797e29a63ce537a509c5d235a2d41a41b65ebc9d7b65a73b4c5b4c873524. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GX8LD2459424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb704665f7fa83833cfa5d70c49f6bdd32175b81e795430e01bd7b4058e43486b. 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/GX8LD2422748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2d486172108007ccc4c9f7e87ef12b7eac7707c3e302c221793077a57028eb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX8LD2425904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba313a18f96e557ea72e5628adb667bfad8bc931093e07c6df8a1bb84829a674. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX8LD2465639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ee62ce55d2ed9dbc8b138be81fa85aa6b630a7e15858b53dc0301e3e456c47. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GX8LD2411832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678fd6898339ba2cbec70fb8c206d1f89efa09ab1a9268c27567456cadfeee9f. 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/GX8LD2425029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61405c88c0f3602148f59ebaf085d471fb6976d585b86ddbab3ccdad90271d1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:39:00Z), 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/GX8LD2543960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692bb915ca95ca3c4357aa97fc6b584f3d582ca46cc8412e45824403920e2f90. 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/GX8LD2542206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3ea4e7a6d30376b6df63fb422493e2fd0dd5618aca6d576ff690e0c5bf5d8d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GX8LD2589865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebba84beb1114f529229aa32b8c610b5b5c5c5f0182a6ff5f68cf96400cb6f8. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GX8LD2542639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfbc80c89646d161fb3518e88551156c6990ea635853f8d2c8818c9c9c444a0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GX8LD2557643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a5aa0eb55af77c111016d93346cb5cbb01ad4b014c8283f4850ebf5ace6925. 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/DEPI81800430.