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 0xa1f6240831c45c645f70c732c424c63c8d85b57dbd7e4f68a73355664fdeb29b. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7e9dfa8-75a8-49e9-a757-1505847a1689.json and https://artists.proofprofile.net/proofs/artist/c7e9dfa8-75a8-49e9-a757-1505847a1689.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 0x5430b68cbcb80dc188d933853c1bfc2fff8b36cfd9b65fc718cee92ca4a0e4f0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:01:24Z), 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/QZ85M2062569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8172c412376e0f7f9174ca51f5cb59b8a73b3001274b9bd4063c2e52fb16d4d6. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZL382070976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf72cd25d2d3cceae0d4244e8f46e69f7082d7a5bd6d2362acd9588a98e77932. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNB82079767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d661d1f8cf1d12a46c51f0d80c24d0add47bc3bfa12bae51ae89484afe373b7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCADW1867623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b55d6ff5d64a2d109a4e9b17f28343a7febce5d3290e4b7a100cdda24f585fc. 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/TCADW1867625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d1666d4af58396b0673097c1695ae09e8cd204f69b8efc6b6f6702d36676b7. 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/TCADW1867626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf677f8519b15fcb0c44da14ebea3932e55391fc30ed757d0f134b24eb3000bc. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCADW1867628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c42f8f669c74d038f2ea852fc74a83263bb504e5dfb0eead22201dbae9a330. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCADW1867646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193b2da64450fa53399fc5963622521e4a7ada7f80bded7ce6b102c45c152fa5. 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/TCADW1867647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a311a5dea700bf233d2120ce6962839ef5d15fa20f3b91f838fe920d45c2ac7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAEM1905109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3d7979ff50d1df493780c3b6deffd5f99b63c666273e9d1435dc660f6e1c4b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNMT2158279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6306f279d04eff97cfba5984623ea19b311f442bbefd198ee4581ca08b3e6cdc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNMZ2135212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e663c7b6b580e41b26fbc16252131fc151e28079ece9db4c81344d83a2ef61. 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/TCAEK1961609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451b21adf7631fc876ba78dd97cbb9b25556296ace056d46869bcb24f9e8d31a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZMEV2129840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74ea5390cf5d65de22ba9fd856309a00bf68817b61b864c20cce3677915793c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZJG52284686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4aee5c787a37fa313a8113372854425570096d2d3da412a7c5ac826316708ce. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:08:17Z), 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/TCADN1805037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e018a677e0ec2d24a03db2394cfe15398c54b16d7d54227e18be674dbe2b2b5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZWFW2453727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b37926b07acd67847f02e59f863090bc043d3c57699139bba21951b4bf1117. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:55:55Z), 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/QZWFV2467319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ec74cac40f2482402ac1038950e485293ac7aa077b872e63b33be607b38874. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNMV2267166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b74c4a00c35ddb8cfab4b0a11a5cd41d7afce81b3abba2e631b59807ca36444. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:41:44Z), 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/TCAEK1942949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb856ab1b475a664ecfebe76dba560f82bffe9b71cd9e7669f58a045779d2ec3a. 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/QZTAU2307694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bb7ebedaaf72485f18f110fa44c96fba011e3f0bb3c99196088c145552844e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZTB32396536.