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 0xe5a9f159d8ff07249677b1f76c4e3e136db3f01ccc531d56358777f49c3393bd. 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/7bfc8d79-9462-434e-8dc6-262bae1e3690.json and https://artists.proofprofile.net/proofs/artist/7bfc8d79-9462-434e-8dc6-262bae1e3690.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 0x06f5e9f9d9132789d1c0db4e3973e391fe00d7ac7c887981fc8d53155bcaf132. 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/PLI369059910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cde7c7b2c77e2b0b0fa28f30dbe14ba35dd4de957e03d3606f305c18f689b0. 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/PLI369059900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078ca1f400358bac3b6ca70aa5dadade9ef31929f5da2b801d168d5742a3551b. 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/PLI369059950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37986fa9b7cda0517b6910d7d7b17a4cbbce6e8f45625f81ce552aece44ff3c6. 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/PLI369059960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a73845089b196f1bb7c5769f808f0980db15338e21d83382619db6ef0b6a1d. 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/PLI369059970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62cce491ace5ddf796c00923396f088a6a46105c81d587b1f854ec8d0c6ded5. 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/PLI362967320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4801494975eaa6a2f11161e91df1ee7703bce17db957fcad6a3e8ef2ddd93ed. 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/PLI360265250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3cc5f182446cd3e3e77687e1d786644ea533647ace3bad6b72a69b9f25b563. 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/PLI369059980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3765146f667967e1cf06abe8dac874b812693a1efc095a1dc38972856759f7fa. 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/PLI369059990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044fe9c4786f8ed5ba9a3b0e17154844cf7e1d28da8fe530efe9dce16d7c74b0. 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/PLI369059930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7516e7a9fade18185d106544b2bf77f371e316b8fd57c4ccbc042b318b28908a. 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/PLI369059940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8ecdf6b2335c6effe6217d2164168827071f7d49f85938625b8c68a1208602. 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/PLI364373430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b52d85ed54efcc8aa636b64964f9d07bae2fb8074f5a2b46637a95534d7c9f. 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/PLI369060010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42ca9c69ba4139ef67e4297ffcf3f97e3f866518329dd0898424d447c4e2e62. 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/PLI363633170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cc207759f19d0174d8347e3450322a16f2ef5b22694d657d5a7b65313adf3a. 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/PLI363633180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d24d203b8b8f22511b2018ad60db6988ac3261f92d44996a946f3ecf523a311. 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/PLI363633190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7d837d01a447811c58a8ec7d979a79c3843ad96cd20f952786e8ab50d509e1. 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/PLI363633200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a85064cd621920a12cc5332646a3dd174fb528600efa8a83091e423a2a761d8. 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/PLI363633220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f5e9f9d9132789d1c0db4e3973e391fe00d7ac7c887981fc8d53155bcaf132. 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/PLI369059910.