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 0x076bd7ace2adbd406556d07023feda57c801d48b53eb7ca90a17388c7bd8a66e. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb38b7d7-205d-47ae-b651-9487962bc001.json and https://artists.proofprofile.net/proofs/artist/bb38b7d7-205d-47ae-b651-9487962bc001.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 0xba414c44c21f5f08015171333310942c841718cf9dc796882c0d3ced49bd4fb9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZYXP2311514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1488b7906340affd9545f59f84583a35db8bc5964a98798b40efe5ef72f4018. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZS642278447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78e7b0e1027b874050f9b4d02c185c8e3997bb90284e347fded8caa5866c459. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZMHN2454114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a93fcb9c1e5aff53621712f61a69866c4abcaa1dea9223d61c69174578e795. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ662451512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5a8d19883b07c51bb4a6b7134cecc9e10fc6eb4e7f98da1a3e1622197abeb1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM42K2518694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ac632bdfc95c31bcc01791c4f1f5a8bb5eaa1a979225836e248274df192a38. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM4TX2561786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d7af803af10eb03ee78beec123cc672ca2f6293ddbf6a8a48700c86a7aefcf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6MZ2540907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc590a530df92aba0458fd8f83b2792af92501a848b62ae85f3343b1bfae6c60f. 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/QZMHK2599636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f1f5a81b625c7a0dc070282cd960a545c3bba0c75349bbe24f1d59eee2bcd3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:23:28Z), 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/QZMHL2511857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9560ea408ead4e661b2c0df5a9e450b5b3dec823ddbfb651bec4a89ec8bb3d8. 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/QM7282583641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc317c76d0fada197bacef5aebd8eb92c15ae9ca7877b8e6140462e373903b123. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:57:13Z), 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/QMBZ92587091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb389abfe8092b5c8a9d10705e926a05efad2f7b83b782f8f71974681ad62ad1c. 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/QMDA72537379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e9a898a82c9b60ad776c7b7e108e13fbb96cf06e0c180a9c059bc82ebc91d9. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QMDA72581951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439eaf1266de654d26889fff001f176d282a05266f22ea10db3a03e6e3caab65. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QMFME2500241.