1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xbfa7a04b9c64bb07594122222c58e64964e1ecb53d18f6b2bf1e91aa5f290d10. 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/1bd80618-df60-4545-bd3d-55d1a3c01d34.json and https://artists.proofprofile.net/proofs/artist/1bd80618-df60-4545-bd3d-55d1a3c01d34.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 → block OTSBitcoinBlock must exist at that height 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 0x8154f64574c57d06b1a8ede4aac1039f9b7bf9bb1f1690fd1295386cf60983a3. 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/USA2B1703126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a4df78a46291e710a9a2fc96530a748036b86a229e41967d6cbf3f8696485c. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USA2B1703127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1c8870fde7c0c3e6eec6b2c3d0ea5f13c49016cfa8df10f194314fea936ec0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWR2018118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d30b1d57aaf0293d451b08afbdfc0b3b53dc892f533961c87b5b4539976314a. 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/QZK6H2096924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413124acd1f0f62a866404ac271700204d6b90a313d4a6727f606e9104cf3c44. 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/QZK6F2081616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0846ee568f5ba2f4e40318a85d177e0c665eb0d668dfc40dfcfc575a2dbb09d4. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZFZ22134893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e05f21ae5816563723837ed486d428705bfe49815bf31677c92828ddd7dfe44. 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/QZFZ22134894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a92ea53124baf4e16bb8ef9094e22bbbe1e33d5d58ee133abde3858c2a8309b. 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/QZNWS2108727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d9c902aa2dff9cd0e8d08a8ddf305938597e67b204af5cf4301376b944b3bf. 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/QZFYZ2354085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b505b7c832294fbd28319726d0371e234a194cc7e68224dc3b405b301c9ce9. 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/QZFZ72333353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1459f99d3cfd93b541a6288b28460cb34e30a064d45a2342459404b102588ed. 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/QZTBB2303008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812834e04eb47e18a1db602ca8730d6dcdfc5b9082506feea328b1ee2e9a9204. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWFR2434863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc5aece6385e5bcdc678e381ca4b418b814a499a8159152b22d12996b7309c4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFR2434864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010dcec01873defc5a6c647061b06a5648d5be2c39fa515c42df455eab5413e3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFR2434866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e9d589ce1591281feb1a947b5666f7fdaaea77147dcfc5bafe9c86c7f4df3a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFR2434868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea847aab8bfd1703127c552473f8cfc2728aa589a50a42a57582ba9a8f24caa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ7V2404447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4622eb0d733165ab248a4d11de899ed788441e6d2074d5b93981810f77b7403e. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZZ7V2404450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ae86299ff303a1b28cdc3abd88a4d57cf90bbd7aded761cfe05cb1ce1f69c6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRR642401888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a4e70863838362d095f8ab0c844cc719c06926b0a485fd07b6019635176052. 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/FR9W12120359.