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 0xbac55e7e4213bb7bba39d2b499a43e13bf380bab00f1e4883e30cc966ba90688. 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/39e6d647-bd95-4dbe-8dcf-fb3f97734f47.json and https://artists.proofprofile.net/proofs/artist/39e6d647-bd95-4dbe-8dcf-fb3f97734f47.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 0x1a58b4581190dd5a8a55dc7cd30c38de5bab906794fb7d5e79a3033e27886858. 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/US23M1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25291269d0aec094c2de895d9ffd5d19067cc82bb54770ee3e7b40b7acf4bcf. 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/US23M1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0f22f325b550c6b5c7129e3f4d0f50535629c04d283792a12b602ba0667b00. 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/US23M1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce21c507a53759e4edbd419bad7ab016e7fdcb1adbf6ca1e62efd91c5900a21e. 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/US23M1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506e1e3bfa1f47c3221416267a3c69837b529a97c9101ac7a74d5626de9e2a3f. 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/US23M1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9498c47be4f0af095bfcdc61baa24d18b545884bc27e536988d958e3f9f6d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US23M1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173ec922e7a6b42628a622c75646876cbca8e8adc3e484f437491f1bd1b23102. 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/US23M1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2bfb268c1702384e48d184c0ee8982ee847865382ec0c9e396972b15c2afb9. 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/US23M1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b4d7e3da7f9f91b1ebc6908a72b2203754912ad5fb61a5cdf8b550a2f2d4aa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US23M1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa383c002bfc8d09328816c59205f9ad4b72be78207de094dd57b36e0a79ea1ca. 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/US23M1900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941de385f0d2b1480146807b147b2a97143e240770d9322282c3208e6dd10664. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US23M1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a842072c76cdcdb94dedc1b6b8104648d3ad278686699805170c4859148a9d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US23M1900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896f4e68afbdd02c7f27a8e5eb6b0fd79e4bb17f2b1e6ebee8be38a2f155ccad. 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/US23M1700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af727608d5a8119dfae1e52f75043e9615dbd7f3b96e62d992a16ebef48f157. 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/US23M1700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb996f7fc129583fddc1a104693302108ebe0e3bfb1854c8399dbb9f4341fc9d6. 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/US23M1700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009a785112ea8a563589344fadb261db3edda2d43711af797eb00efb6857786b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US23M1700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9934bc6241a549d263897eb4f49b3fb3cb8e8a7d8149c11f05a54da5cf2d1760. 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/US23M1700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bf1cc3fa768a18572bf312cf0b6e740b055547b0085aee8e90d4dbb70ca623. 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/US23M1700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7b02ba6895009943e5c03791789a554b2bce122b474dc9f40f21e205bb0fac. 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/US23M1700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95191ada92c6b9bead7863e381a8fb1757972eced38996053f39bbf9a7d31465. 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/US23M1700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222f9b54b5dbb0a4e37cb76354c778c6183f5ab2099dfe5527ded92823c3eca3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US23M1700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124168680011255a869511934eeb06cf28d219c336638a3eb013e73a5510d6b0. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/US23M1700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c8f5270a2abb65c3184ca61164d4acf9e68de8a2bc0352f4dacec13b1b8a49. 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/US23M1700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803029645161247e96d37c436c245d7992cc37144ba743a0707acd83a5fbfd9a. 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/US23M1700036.