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 0xdd5fd961ecc596f9bba5a4e268f9fd7c44018ec0ee2e916296dcf9d6453f569c. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eec132d4-6e7c-45ad-b6c4-e9c3f276bd31.json and https://artists.proofprofile.net/proofs/artist/eec132d4-6e7c-45ad-b6c4-e9c3f276bd31.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 0xc950d7feea9b6307a207db3c7ba924d3c91794fe81777196c2a4d5b5493b9712. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/CH6541963221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e308b44b0eb99ae703fa891e90aceeb991199d5ae89e8642869bafc4fbf0ab. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/CH6541963223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc45675238ad618a1bbc130f2a2a7b7d32a124666da53d773acc17ca22f9bce. 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/CH6541943307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dab2606f5d4a20aad887126e87eb6094156b1ab8e9be3a5d1b97aeca6f4bd1c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:31:24Z), 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/CH6541943308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafa8cc20d8694dbb86363709c62fc37d487261737610f6a76ad8ab45e064c84. 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/CH6541943309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5043014db61e31b0d75b9f08d738884b20c7a5575710d90e1b39708e118eaba3. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:53:14Z), 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/CH6541943310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8ee34da553671c7415c3c9d45dd1ceaed9c74ed2f86424515277121767c97f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:32:37Z), 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/CH6541943311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cff8378aeb235db10282ddf2f9ccdf25232f5f20494a4e984a33796009868c. 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/CH6541943312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f182961761966609805abfa554797749e1e426c5736c5476361965dbe6d2702. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:11:26Z), 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/CH6541965383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b0f008f5aef5c3476bfbf843a1d4a0d6195abbed95364466cd61e6658c9197. 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/CH6541965379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb15cea922c786ec74e3971a53b3ca329bdaa7c81061d5770cd98038e19161f3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CH6541965382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220ea1d50b150af5a3570c2ae9eeecf9835134687e25d6121fdfc676c265e5aa. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CH6541965380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe488c332fd6bcc08f5fa3bf6cc93b2a2dcfccefb53193d54a2d53e5764dd25. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/CH6541965385.