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 0x72eff1ee8b3d8ae6100133c26ccf7418dc0ec0526cfe367dfeab6ff25de69961. Chain 2 (Bitcoin): anchored in block 953794 (2026-06-15T13:43:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0687896-e237-4c9c-bdc5-21f01c019068.json and https://artists.proofprofile.net/proofs/artist/e0687896-e237-4c9c-bdc5-21f01c019068.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 0x4eb1ffc206cc7a82fc663de1513621cb87f1ca8a0d177ef28f351e5caee1d01d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB72331474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d81ec694372d0cb22f2eaf593059525e4b48e2a75377c17525f6acadfbf2b4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB72331478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc988dc3a99b29a400db18cdccfb39d83bae90eafdcf31eeaa74b59494d5bae75. 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/QZTB72331479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ba6eddd6f61629a399a8a04587c789bce299258e9f69f8094f077fb8022f6e. 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/QZTB72331483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc9fae742e4f367c2d5d8be52951e36f6dd4f87ff556641805b6db5b50e72f5. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZTB72331475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a2e5c26c3c05ae13ce220407d2f68908df3e66cd0c525e70590cadd2f9c009. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZTB72331476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf7995c39fb5a65512ef8160b508bab30cb2510aa36ff854935af8e0e1204e0. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZTB72331477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1e0e50d06f34007dc1ec4ed015343322d50a851a9525c1c7ff4ccab6875775. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZTB72331480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe8a7152aa53934bcfa593f142118d748dc911f387e5882781d6efad1960f21. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZNWW2385428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4722fac471f25daea6502719069884a35038d6600e2c35473a43d79b749aea92. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZTB72331481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fdc82f33d76efc53d2e256962db2893afcbe3836973b9f92ee6f60862d2a77. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZTB72331482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8043d37ce21c3814a8a6bba96148c288365219f9e508e9c7fc5f19b024774e6c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZTB72331484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf486f52e161d7161d27be0ccc7c1f2831186970a7f462f40639da1f4ad0b361. 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/QZDA62123565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f37293db8bb91dcee47e677742bb2671d983aceef01122039b74f0d430addd. 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/QZDA62123566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b491f8332ed6026bca702327528e4928515c1d68f48a94faf937416a730f66e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZDA62123567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e062c2bb089109a134e7d9f017f45b7b20141997b4ae09745c1d3fe1dcaae9. 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/QZDA62123568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3bf3212ee6a5e7580b7587a6639f07499d465f4c82f789015ce7e09794e2f7. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZDA62123562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d9adde4dd03c2075b95b74f93dd0709f63ad3596d79aa64c7310eb559e3db9. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZDA62123563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ccb436746aa0949406d2c9a988371f4ef179316b28fdd2994e91a7359b36a1. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZDA62123564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e69ab775818e45676c8d9f06073c41bb05001c6217c2d585d89ade5752318fd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZDA62123569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fc894e8ff4a1a0717fc199d6f57dcff026fe962d484e8b29ff2b302bc5f67a. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZDA62123570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80713261c7a8bade889bfdac147ee20d43033ebb55731e329fd4e307f4cd72a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZDA62123571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5ca67997d12e6e15202a45d2f9283a2f5b799837246cc1be4d6cd4a1aac78d. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZDA62123572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c5ec65aaf6296215abb9c9d057743175b6bc0c2c0be40dbac71c85891f17ef. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZDA62123573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd7a58a47e9803b387aa4955863470724f2196e7a65dcb376cc3cb65ac035a5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPLR2260886.