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 0x4212b5520fc5adfd427b47017e515ef61655757819cd98a6da46a36f94845821. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d315dbea-18b9-40cf-b197-427abfe9a0fe.json and https://artists.proofprofile.net/proofs/artist/d315dbea-18b9-40cf-b197-427abfe9a0fe.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 0x310a62a51429c6a4560f65a24be31620e1aad09ae15862e9038e4af8ac96a93f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN52577753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557fdb491990479cc83f4f4f1439b4a2fd0e4291487834115f47f3976be5933c. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:42:49Z), 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/QZHN52577780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ef996235f7171c344fba23d815e0a781ddb1bb051edd296b803b660b13950e. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:05:34Z), 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/QZHN52577781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9725286106d4fee09a44257f031ee1eb6bcdfc8dcd83c81c94436c758a70acc0. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZHN72589049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ab8acf9919d4a9269848ef5fb81cfe72aeb450018b2411bb315ad9b9f27f46. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN72589052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734fa61c25739b4c572f3dbd829e6f66eebd49a210f1e841f982a17f8442c68a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN72589075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e77ca56c802a1475aa76d5210f10a338b0727af7c17f3d7ddad62493ff03dcd. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:02:04Z), 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/QZHN72589076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96404d931a205960658983d887a0a351b050167425d07ec4313d37fb7309788. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:31:22Z), 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/QZHN72584027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1fae0a80b1d2db3a33afed88d9d3259e0c5d4cef10aa04fd0e9ea8eb798666. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZHN72584029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb03f70e9273d11f8c3e72fb841aff76d7233302219b5c606c1818b2cb0a74b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN72584055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5074d1d9ac3f7b4f348e76eb2d7e17ef4a5574e19aab0d06ad1bd24b869a0045. 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/QZHN82582151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5299e05b899a554ebbce3c8e6299502c7d88681b54d3adfe2ab0a8ccf7760d74. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:21:56Z), 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/QZHN82582152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdf39ccf80d7aedd88713743239d14180b4851d0e2bca5092960e8cf31a4274. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:23Z), 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/QZHN82582153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9857b25974a9a21b6607621d22bf41c5b59c2bf5acaa6b4df7656ab379f09c5. 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/QZHN82582154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226f80f8fbea7053eb44bef5ed44110c50dcc656b8e26b0b87a6cb9115bb963b. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZHN82582155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f901bf82da585f53e0c139ad1b63719871a38911726716fdd2a7edfe826b73. 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/QZHN82582156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94822fea971945b92259942f2e16ec05904ab91252a8f1f53fc5a99a6ce60e2c. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:43:40Z), 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/QZHN82582172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc1aeefb48fe871ed3a35dbe18345baac6930e8a5e0def33077677f81b550fe. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:35:18Z), 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/QZHN82582175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2f8c25396f730c52f83c96fea2c8faa4cbb0b17ae4bcb976bb5fc9505fd0f8. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:19:54Z), 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/QZHN82582179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82836aa4a4ffa5839d3b05909e260401a6bc1b29077ceda9b82dd389f51df733. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:19:17Z), 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/QZHN82577048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5dc543cb327ad625ec24dce3b7051fc3a82f186d496812fa859f7a20bcd7ac. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:55Z), 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/QZHN82577049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e9e2d652d4d29d2a7bc633d16029496d5f8da093c1e517c2cbfbb01c892870. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZHN82577050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760e3048703c44b63d3763f7511823f3283a0104d5fe4f74a4e8f8e4326dabdb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN82577053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1a52f85a85f917ecffd2af6cc5923b075be82b6fd67b53501b7bc6488f69bf. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:49:36Z), 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/QZHN82577055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd39020180cf2a781af874b9a72d36264302811bea7bfbdf24d0d66ae89b92a. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:20:16Z), 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/QZHN82577067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71bf1f46c6d6b60440e4aebffc3451ff528e4850c826c57bd8ed006eead10dd. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZHN82577069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b80e871ac11adf57d6fc452f6813ac40d56f30a5c6c187df1c85fd07d90b0c2. 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/QZHN92514096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec1dcafb14da9b16c57bb1225a17b906cec4ee26365c5536b7ebde0a4e50dda. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN92514099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d30c7bda835db687bb4eafe787dc48eda5b85bbc32add7cbffb9844d394f4ce. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:53:23Z), 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/QZHN92514117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25ffee4d8f9d41f9a50036114ed2702b73c6ef8be0229ce8fb9b70e537d1ead. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:02:44Z), 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/QZHN92514121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c8ee06033d15c3556dca70ab10b6d3a9a05426a79bbdf44a61538738dbcb1d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN92549184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5369e8669f7c9e48812f7cc81f041e5f9e0c3d374b24b7fa6dc28e4c29e10d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN92549185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed6486f9a6df70ba396e87d7e41f7224cef91f772039c650297e1721e367317. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN92582833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a83beec7b4f23cf06db36b80f2f3bb189f4f1338567e47362e226dfba7bac4f. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:46:45Z), 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/QZHN92582834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483f283f4a19765b42b70d007b915b615333c87b9a569f1d67ae4b33ed6783f6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN92582862.