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 0xfae49a4ba0e7042a52b15158b8e4d7eafd03c059a65b2fa39176f274f701bc7a. 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/bb543cfd-dcb0-4a12-aa04-a1949361789b.json and https://artists.proofprofile.net/proofs/artist/bb543cfd-dcb0-4a12-aa04-a1949361789b.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 0xa7479aa27156df366c2bf14ec7e8137dd5e76f0bf3c2cc59a8fc045f0cb403ac. 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/QZFZ42348475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf55a2adfc71099efacce0b51cb41da9f86959e63e5a58d478ad4a721484e5ed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTB82227724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf55a2adfc71099efacce0b51cb41da9f86959e63e5a58d478ad4a721484e5ed. 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/QZTB82227724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75afb9aa66f890a3db10127c0091e28337e4ba1f45c92952bab1081af979b33b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN42113488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738c727d9b705594ed9c3770a34bee7e8416dd0b5a150643b88b653cceab6941. 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/BGA472003280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb205b2637ec3bd24ade2566056875b9bd85c09676bea036506f1438c4e9d0cff. 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/BGA472003281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246f04e62474c70318fc93c59e8b4cc0495a778bae76659e66a4e564766cd5bc. 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/BGA472003279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfb1385bb4c6c65ea81312f79a48aa15517e7df97064dffecf9c402474cd212. 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/BGA472003278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a1e47160e561dea1d9570cdd72d7c637e007f9ae65174c668e32793526e5d4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADS1828185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29fb4e0ac2d39b51bd9c8599836ba4da6413beec670b7df6124b60930e3b871. 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/TCADN1822904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03605796009c7a2510b875da0088b07e711be2a35259a4cec6699bd862271873. 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/TCADN1812705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81acd90686482bf51bd8cc98612494447e599a1e8fa995bab85131a0d491eba5. 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/TCADN1812711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb119c53ea0c586ba200aae22d54a10ce83a674a4e7d1e29f2a0b054e7c335086. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCADN1812710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b466e13e8058ec4257ebdf760bc64c496bd546c64ff3f1e2864633f798ce6e9. 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/BGA471409609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c89e31c71248837955955acc3688fc04bdc26ef3a150f5c7873536e249f0e35. 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/BGA471409612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bda3f354f9c336f9b6206d47c0efb41c6ea466fe0bff0817c51820e9e86b57. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAGM2207337.