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 0x4ffab258d360a1795b9ce3eb35c862923f5a5b8bed0e9a50d82ad0f2811b676d. 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/f363ea10-5629-4570-8b7b-2b6b764495b7.json and https://artists.proofprofile.net/proofs/artist/f363ea10-5629-4570-8b7b-2b6b764495b7.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 0x02d409b077c0f01ebf17f3d773edd20f40dc7b56cffee58b588371e102e34cac. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CH7812354839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0c6e7089c9d109f3b419375cff2d0c49a664246d44891be9e7d0fb34f49c7a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CH7812359379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7e88087a35b215269307872c7459331d0369e5e17bb83f510b6d1c5dcfceda. 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/QMFMG2322312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb0e976d52e8ec933a403e5ba8ed684dc0d00c00b187d46f9eaa8fe4268a3d2. 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/QM4TW2411555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72b01deceb610b8a4bf813614eaf39689feb0366c80525169bd78bcaf1d707a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:38:55Z), 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/QM4TW2483146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ad9ae46454414ee566a563fb77c012f59f57cdbefd3c0764b2885ac48600d7. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM6MZ2441168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5288bd0dee3a791376008cbe0c0968a7fc47598ebb3f416acce3605002ebdde2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6N22420878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37389995cab67dffc89d6d3ef33b89a7e99d7c9f71b149f04db2887ffae8ef21. 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/QMFMF2344471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb0e976d52e8ec933a403e5ba8ed684dc0d00c00b187d46f9eaa8fe4268a3d2. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM4TW2411555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72b01deceb610b8a4bf813614eaf39689feb0366c80525169bd78bcaf1d707a. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QM4TW2483146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5288bd0dee3a791376008cbe0c0968a7fc47598ebb3f416acce3605002ebdde2. 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/QM6N22420878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145aca77f24df068fb32f50cab8f392eec773f096cd18df4d0b31e13f9c78808. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QMFMG2329403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37db77623622d1177b868814094104f1e0fd7c067b20ac772a0c0c07957efa79. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QMFMG2329401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dea180cf4dccfdc8694269daec5de962660f11a99fb7c3a192d8def1d2118f. 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/QMFMG2329402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668e155fcb74e88be41ce39471ea6966cbf0b392169fdef8ed52906e98a05aae. 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/QMFMG2329404.