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 0xcf8cffe605bd72174acd89c5e3de40ec42b78fe395f86b371df767172b2ea2f4. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45b8d0da-4cbe-4fb6-9265-40cab3ff0e97.json and https://artists.proofprofile.net/proofs/artist/45b8d0da-4cbe-4fb6-9265-40cab3ff0e97.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 0x2e82f5b7c4e47542aea96eb02a9c56758c44408c3ddb1e7e60d04b752d3ce7e9. 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/USHM82157067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08850f093a4410a648cb3572d408fb38ef0d3896914e25ceb56eeaa2039af50a. 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/USHM82157068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94be44c6b1faadc271190e2f8b7725976a90e980924f3675827f8beea5b3f4d6. 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/USHM82157069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad64ea31a26a66b95ca7ed2717cf9e29bc2c21ba4c47f23867527b146e4776dc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM82157070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9c09dae58d29227dd46f80554f5a0e3ec1b3b479f90696827ef3856ecd7866. 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/USHM82157071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0c524005656d176fac852954bf4f700f5d2912b231419abb299402adbaa4ac. 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/USHM82157072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b16fc1f882a5d40d0600b308d597b47dff773ef67bd623bbc17bfd92236148f. 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/USHM82157073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0965edcfbbbf9f9c6b7d6b436637b17c792c31d499c529b4a736ad438be06102. 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/USHM82157074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56cb60ad1fb2c97096f291e59bb847086a7eef03719cfea100869747ae6ac8e. 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/USHM82157075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573bee5c1d14eb2005b45b4bfcf4cf9051e4e7f04cd3a7713abe4fd206b78b3a. 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/USHM82157076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4828044d64585bb888bb50fadb60b948f3c5dfa7f7b46257f930e368bff39e17. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/USHM82157077.
Please Come Back to Me (Remastered 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1dd4349d6521d86556d34347e309177778643a0016164f382466512ffa9a19. 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/USHM82157078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b2fe292d84dae8ce1769e03e98062ce90e6e7efd656d0d0bea22efbff2292f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCGH2286876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ac0860ab2b01cf494152ac2832fbf8a53401eae9d31e5462d351a23e1a3dd1. 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/USCGJ2223835.