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 0x67941766576e6c9da01c88626541b8d69001e3299fbcd6a07099e00b97df6396. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df2980fc-c097-40cb-abd0-fba454f29a92.json and https://artists.proofprofile.net/proofs/artist/df2980fc-c097-40cb-abd0-fba454f29a92.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 0x6ad8f5526adf776bf50fb21e6ee70bcd4a5b16bef3a1814927676a7e8dba7cd6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USLZJ1576196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1313ca73807a99d124a775235e679188c5608cabb43f0587697d3111138625. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USLZJ1576197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc5ae46e3ff615b88838f759ce47f00850612a336f9710ae08a019260fc9c5b. 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/USLZJ1576205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24171d1865c75aa57d462df7a85d009164d09d2ba5e5b6389e293c808272649f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:29:42Z), 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/USLZJ1576209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba39e52b7398a1bbfc765f9d75606d62f61ae84915b9fb5f7a7a513a33076cf. 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/USLZJ1576210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca2946d52a433abb90145e0be297d7b04f2f5fea841a7605ad759c9e2b1d90b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS1Z1646013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31cc9041902818374b0de052031fd056ba50c4203f4a3a726e856f0b2eac44e. 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/QZS1Z1646014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cee346070c36729aff6f5987dd1eac6ee2920e62184e360897922a909da31eb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS1Z1646015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc102d15a67951c1414781009c3f50a418de89b0d1b129f7aa1dde2b1b720766. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS1Z1646017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf328bea09fa9fbe57b12355be35d0151c4f16d72e4cdff8ad740ffe9416a47. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS1Z1646018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326e23a4e6a88f017cec790dac60f8868225d15b537580cf69f8281807de4106. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS1Z1646019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8911c1ab8abde3dc763ba4f3bb487a2623fc12279d4cd43bf90868794aa615. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZS1Z1646021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0316c7849fa570191804ef8b4d8a6d772a7a134eee85f63ac92b777e6abd1f. 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/QZS1Z1646024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb02a2c2ef80f139693849206d93e6f4362411d29499052f3de7e4b79aad749. 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/QZS1Z1646025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf481bad8a3fc42b40692fb66f92cc3464c665964cf3d1ceec9b12a394898106. 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/QZ5FN1755753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44858fb899ac2c1d5c99d0a2cc28f0252433b385361281f8b383fa714979f512. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:06:21Z), 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/QZ5FN1755754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf66e2603c1486f484351ccbe94256eb414324e1dbe0ac3e55ed7fc176a820c. 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/QZ5FN1755756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1184e53c509453fba6873e2206a0566491c16400d5616efddfa6effc8076bad3. 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/QZ5FN1755764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412c9bd1217548e47cd429a57f9a0fe6fedebccd9b70c5d584f0c7f9711f9382. 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/QZTB62214305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8b55d0f630c45267b23264ace304bc055a3b9c4bac461f39cfd13db0967c1d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:20:25Z), 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/QZTB62214308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc00eeefe2f3eb54dfbe373c873f4d12d8d7e475a5d9668f6a9149944fb217c9. 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/USLZJ1691677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9753f89ea072565aa776a67169af663f1612bb30d5c42210d732f1a5b445b5c3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLZJ1691679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c07a260226558210e5a26be1435d33d71134529fe61c56f17bff4d32d24b71. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLZJ1691684.