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 0x69e880e46e14b823b95d29d6c1d35e2648f2a489ae116c3e1b20b85a290534bd. 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/a6c3d398-c7bd-48b8-8405-826b3369600d.json and https://artists.proofprofile.net/proofs/artist/a6c3d398-c7bd-48b8-8405-826b3369600d.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 0xc3b9df72530e66eac2019f1484ed765f10a05954aecc06a5c489e5887a0497e9. 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/ZAHW51700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e6e495a2c2c075f5da1c6058413df37304f36121a7fc150a5eec815921b44d. 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/ZAHW51700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205def2266f34389f9ea9b42a640209b3a6470f1261da27e4ea17c2508ac890b. 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/ZAHW51700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8707ff4817fe9c3663269add58824e1928371e00950eca7c1ee89bef4d6440. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAHW51700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448dad3ca1fc455b8b94cbcf1db3bc79da7fb98ec7b072eb606b24ca12da492e. 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/ZAHW51700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59f4913019c1fdafc2075b9dd2c4c44bc6da4f2bb2ab0182c2b192efa20f642. 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/ZAHW51700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26b6422b7ac381d4ed76e8013910791c33ba2b7b09e173b71ac48b968046dd2. 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/ZAHW51700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27d018d61ddbe0b7e5258014108093ab99fb14a8843fc2dd69dd0557a4396b5. 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/ZAHW51700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c77434b4176479a9ef263ee078c339278706b1539ed3d20767f3f8e23d1469. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZAC011600925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfcf26dfe0094a14f248dea493f28dd4baaff360bdcf637143670e207416204. 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/ZADMG2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e651c2fa39201805b51d079318e45f5e81e436b43b08ebeecf6167adf4818d. 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/ZADMG2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daaefe7f2014880f944cd0c8704bfdaca399ded87db63bb2666af180163e3fe. 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/ZADMG2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c73483634f2039210ef18268745bddf9ab06de7bad49b8b5d24957c151e6839. 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/ZADMG2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868da9df4333ac0c0890b7daed018e15dffb5a8f876d807642ca74f9d37f41ea. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:59:15Z), 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/ZADMG2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c20e1bf5203f1c3146d9e6a6a2458fec2aa064dbece55d895a89789597ab9e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZAQ652204663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d35cfa1898c945f177ff69215ae7f8cd2b419c664e4304345e8886b1cf0a3e9. 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/ZAQ652205774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ba900706489c9a86d25cd874b66534f491ec5c55388307138af82c4514a62a. 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/ZAQ652205771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce03ae873eebf5be7e2068a3d2c9772f1f8f701136297215321f5b392a17519. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAQ652205772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d35cfa1898c945f177ff69215ae7f8cd2b419c664e4304345e8886b1cf0a3e9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ZAQ652205774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea6f00cab47b58bd093a011cf34f3fecaa6b3b4e7fc7cc12fab9e499e22e63c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ZAQ652401680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d25c7769e2c160fa467491e309593e72caa14bb80c87a416722393f9db9fcc. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ZAQ652401682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81e1c372d59ca0c8f4b15f12a15c559babfccee8e8995c61da313420f1955bf. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:36Z), 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/ZAQ652401683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a12050d1944b5d324b50d701f570ecf41c8933aefedbe23017170295bd1437. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:10:08Z), 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/ZAQ652401685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bceef5e059a58c0c763f51d400661767e856ecb9335ee61608b8254f17192e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:49:15Z), 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/ZAQ652401686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec1a505fa41fe9af4d3011802d1061ff2f71c99054101c9a8a58c2249c26b38. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWFR2339503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcbe60e80e86b1d433cf1204eb8dbc73eda9a310507b51de2377037bf57553e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAT541800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcbe60e80e86b1d433cf1204eb8dbc73eda9a310507b51de2377037bf57553e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ZAT541800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91003b162f0a44836bf0d5b5c2597c66a4e8ed81dfafc7c8314ea0604ab33515. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:38:32Z), 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/ZAB541200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966f12001fcedcf8c4cea5c532d46c922a17023ea1c06b9681d01c656f9d960c. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USA2P2344618.