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 0x09f2b429b7194b7c08a16df93d21185f3aa827a604751c577831f72b5a0fa4c2. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb813959-7d5c-4b50-8547-36c149f1b018.json and https://artists.proofprofile.net/proofs/artist/fb813959-7d5c-4b50-8547-36c149f1b018.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 0x19cd216435ce99697f2c8510e2e21cc3426b8ebaff8f4daddde0d92c7ecbbcea. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:25:19Z), 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/QZFYY2162061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707aa33720fbbd9eb69be03241451c0c7366c9dece5ba2a87b1125c6ecc6c7a2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:34Z), 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/QZFZ32109917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb82b0743745595d41c2aca0e572d4a695d13d2a090dd601a420efad065596c4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ32109918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e6095ebf30ee4d271827fab88f08da807f7a0ba70b09ff6fae9bdc965ec6de. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:28Z), 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/QZFZ32109919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cf005c791720c9745cac8130bfb9ba2c1cd7b5b97899bea4c9233f1bf77c2d. 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/QZFZ32109920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd9753d5c4ca7918833b55d6418036984d6fb77701e86d763345987eb829ebc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ32109921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae24e6a2ae2c3f0a2cf1cb4783ecd9434ae5ae6599dfea33415cabaf2c2ad459. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFZ32109922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaac5a5e9d6211561c35de7bbe1643c119e677ee66464f1dca48d27b01d1f57. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ32109923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f103ff89ed2a2949a636777229cedd94d4cee1e52f824a5f1f18a01ffcc4de. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZFZ32109924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc174d39ea93cfc4ca59ea7374e93b60b5faa352f3c502c2dfdfb5171f80ab87. 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/QZFZ32109925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6912e0552bea9f1a4399547681abf014c72d04cc7229cd1b09ad6a74af82d976. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ32109926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebee0b1da1bf6ead80ed0e6cfdb55a53448cb45566ee10c64771dedbe3a8228. 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/QZFZ62124156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03327c0bfdfa24c08cb3a4262649113071921607f088d8aca7ffd5bd04938ef. 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/QZK6Q2196836.