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 0xf30cbc289fac5c4a26fe13bb3cd6b90975553c1f55b508e6b48c3984910a02b0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a96c0594-d0bf-4f51-899d-8805ef15b83e.json and https://artists.proofprofile.net/proofs/artist/a96c0594-d0bf-4f51-899d-8805ef15b83e.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 0x727573e2f42b7be5781462652dad8a264c876f252ae88b688f2dc596e51f2b97. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:38:30Z), 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/QZNWR2001557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727573e2f42b7be5781462652dad8a264c876f252ae88b688f2dc596e51f2b97. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZNWR2001557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c94794f73bfc9c4b15b07edf01651c84b2f69437e68738945bebe344c7549f. 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/QZNWX2141102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57dba60d0db4fe6a8d3888dc8c331f1bd67ecc2c28cdc71f694cb85c8af32ee2. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZMEP2110150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92a99dc2ebd6eaba3c62b40dcb179dc72094349818ff79aade1999556cd765c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:08:42Z), 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/QZNWU2177781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97fdf4ae631c14fc604da83aa81d229be6e535469a31f6a7c3d74ac172be507. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX452220803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f5e8a71f604ccc8071bae34dc5658ae15432fe970d4de42a0cd878c25044e2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA082261724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd0afa64d598ff4ea91b62c02c3547a56d505fa80cab859485c5c0d970e48f8. 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/DGA0M2330628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e26b419133b19070409b27af4b198ca9132397bd00fa87fc96caa692b70412. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DGA072322108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1b5d9cfc3ae1fb287bbaf6c6a1d22d1a1da9a27cb298ada0d941f9d0382e7c. 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/DGA0M2330624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a06c19fe0ad775798f6fa0a7efd7f0e643c896418bde76fd50c33fa635e748c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRX452334865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e32c7f10a03f397eb9de2afcb908531b513447424d898c4acb48f8790e91eb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0M2330626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2749815fb826403e5351a88499f428ab23498808674c5d51098225d13d329c35. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX762386007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fae864b6a4aefd84f9d23e39ae83a9ef0913acc0090ceaf982fc03c74fe413. 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/DGA0M2330629.
Failures, Fears and Forgiveness (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fae864b6a4aefd84f9d23e39ae83a9ef0913acc0090ceaf982fc03c74fe413. 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/DGA0M2330629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25302fa0f44d59aa051ceea3354b877af853fc8553c3579a1ddd5ad5fe71d75d. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FRX452472629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4380d44dc318dae87ce2b71f1b3a20f99e8dca135d919722c1e8df99c37891f5. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DGA0Q2416975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2113e83bcec7cb756243ed072ac3c622ce4f4825380b1d8ff14fff9f186751e7. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:03:25Z), 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/DGA0S2417593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6306c54933047b9f7c36e6727a88f65dfea31dee414c0959eae36e863e5eb772. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/DGA0S2476529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4380d44dc318dae87ce2b71f1b3a20f99e8dca135d919722c1e8df99c37891f5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DGA0Q2416975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2113e83bcec7cb756243ed072ac3c622ce4f4825380b1d8ff14fff9f186751e7. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DGA0S2417593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2e886245732ef8d52db8f219d06a1aaad0f9553d02340c68ef32e10a0ff7f9. 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/DGA0S2447975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b1bf096b8d9c8de20706ceabc143f36875f897d7e03fb873095cfed540c1c2. 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/FRX282547012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0586a1d8167511343885d7da76a349087ce531ebc8505d9b5fce56d4303a0d7d. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:43:37Z), 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/FRX282547014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316775187ef2c67ffefc1d4212c8a1906f373dd7ae5be61ce1b5d642b576fffb. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:26:38Z), 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/FRX282547015.