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 0x690dd0259ff39d15c79e8dd7e9f40049eb012d89ccd1d2b44694febb54a793d5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/342700fe-5e9f-4caa-9bd3-799ca11d5cd2.json and https://artists.proofprofile.net/proofs/artist/342700fe-5e9f-4caa-9bd3-799ca11d5cd2.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 0x0796cce380cb367a74cf8fc570ce2016b2b91e909e8ef2990b4ce2cd0c40a6ba. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:51Z), 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/QZHN52086143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8a411ccd8083f94024aeffa50ed1ad9f7446d32291779a91a5e8749d0a247e. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZHN52086146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bebfa12c231e0ebfebf52219612e662eea28ebdb50b934f8258ec0f829f9b9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:09:01Z), 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/QZHN52086147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b100d97af16b92eb8c7a45b24d7e953a3dd84c4aa5a8a4049f22a3744782f1. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZHN52086148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bf806ae5e7d6c00c31af7ab12fe85d162a593e77cbbef7ce923a3afc478e04. 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/QZHN52086152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82848d50865fc1a7399c9dd5836eaabccd056e94d991e5d254a284fda1fb3205. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHN52086153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060b81c2efcba0ac231d0cda7c07c624c03e400034b75409d515a2ee63ff0458. 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/QZHN52086175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53547afb3c68e31801815ab12d7d6f1534a000d878e923d79d87f72306ac0305. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:29:10Z), 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/QZHN52086177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d77c617c31465dc576ea89241ad459a4fbc88aa554d13ea7b91a00c663c42d. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZHN52086178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00295b4c98dc6825636073caa65b3f6a6827970b7e5cd521e13646af68564c86. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN52086179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f470114347032e22ea759cc62f2a94c91b123878ad6971eba529a71901f589. 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/QZHN52086180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa766f9379b44810cc90cb2ed22e1803e2d60d3fdca6dc659e19b4c16b4477b2c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHN52086185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65eef9d8f9ce1b1750eb9f6fb9adbe4adfef264efcf9e0483d34d2667f207cb1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHN52086187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a31db715e640606a1249faf44b4e14f49bf94b9ef9b478ad7c0ea23b7472d09. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZHN62024672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe688d199fccccfccca5064dfdd831d59ba254798bb32f25384b736d5f8779196. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:42:37Z), 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/QZHN62054250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef31db23425ddc14d492e6f14ad893cb74ed4d40679c7c09b04b217b7ea87c21. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZHN62054255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb00b8ebbd5591fff5dbc4db89f115df3e3698932c6673901942b0d9c4105d8. 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/QZHN62054262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf80ea43de00c264f427309b98dfbbb2172a80e803a0d97fca407320d683f926. 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/QZHN62054263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b98d8bfbc7f4f782a7d6beecc85bf1708c15f723e19d778b63c0ad61b54fe1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN72027730.