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 0x1390c73bc725d8bd968c249e5744fc22f820c24af3a8bae8d80dbf16a769576e. 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/70dc2c2d-7e10-455a-bfd5-934396d12f22.json and https://artists.proofprofile.net/proofs/artist/70dc2c2d-7e10-455a-bfd5-934396d12f22.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 0xc9dac80d123b1581e5843db8e2a5c3c2de07b343a4b414c68bcd7c30b9c69a05. 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/JPC231501284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56eb1649a0059d4a24f52878123f9cf4c397e4c3bc83fa014595f8f7bc39f4a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPC231501286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8481e228c39bb44dc8a85f33c06765265e2acc0d718d3c8394ead0d1244afb3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:03Z), 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/JPC231501290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7d776cb32cbccd0f33e18e2071398d192dc544922efc23fa17cdf2f5768c6f. 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/JPC231501291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb573849c3cfc1a044ae76a57e00415cdd065fac535c03602d3ab9740dcb24c02. 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/JPC231501293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbd35a6dcfbd2fa218a85edfa4aa1847880fe0d9fc3bcf353a7a02c00a697ca. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPC231700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6eae216b010e26466e0385ba443a15334c14f631b5c419bf1fa6373c52e1e5. 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/JPC231700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f375077fa2ca99025813c3802e63833575ed5b3531fea49ebb7be77a847b268. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPC231700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0b61699cec671d0065d60b4bc78457c0e62cb0931014be4c34477291a09fef. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPC231700112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97bb272e165b9e19fee52eafe79a23acc32554cba203e1a24252b499602eaec. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/JPC231700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6307403448245d8f4ec0003f8d1a5da356809c340fe1c30dd5bb14e949b4544b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:21:38Z), 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/JPC231700117.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26fb0bc72cdc6902ee63d05ab202bf051ca4fe1c2a0b38285324f1cbf5d1a1a. 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/JPC231900414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500c2edb5f367d6313615583548b577368eaee660ef7df7e31c9d1cc86ed3f5f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPC231900415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc66baedd49049fd9150df5ee556d8c3260eba92b2d7c4839bdb23a480021395. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPC231900419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9692cbae46040acb1688d6039f39c51335ace1a2e26577e49a437509177378. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/JPC231900420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641d3421e1571c6c3fe10cc21a3bb78f399d376e8cce9423884187fcf27b5d5e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:59:28Z), 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/JPPC02100469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7342b51501e82d347707941c5de156dd7d8f9edfbc3bf1c4f0d92953383c770e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/JPPC02100578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641d3421e1571c6c3fe10cc21a3bb78f399d376e8cce9423884187fcf27b5d5e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/JPPC02100469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415d22c2111b412e67ef903e720168d42ee21689d2ae24c380aaa1871515b4f3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:19:18Z), 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/JPPC02100572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459a0bc9da004961a5988c7d56425e6faac351e32ab45ef16ecf3b7adf05f411. 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/JPPC02100575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc84f2bc5aaabc86ad685e97911611887919985a3d5641bb26c57621b0bbc7b. 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/JPPC02100577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7342b51501e82d347707941c5de156dd7d8f9edfbc3bf1c4f0d92953383c770e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPPC02100578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baa978e65f70686b05f73b3a2653db4fca8c20aa536d941eaa7430a5abce164. 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/JPPC02310179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baa978e65f70686b05f73b3a2653db4fca8c20aa536d941eaa7430a5abce164. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPPC02310179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baa978e65f70686b05f73b3a2653db4fca8c20aa536d941eaa7430a5abce164. 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/JPPC02310179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc27d4da6872b7952b048a00ae9206b15d08ea1a16f5089fa60fcc4f12a2b6c. 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/JPPC02310290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b346f695c47c69b59d02619d8c0807753f3de11cd540ae3eedfbf18c9d5bf9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:11:03Z), 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/JPPC02310292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4860b076753663f3b214e549d1dce4ca376ea300f58f37191be82ccd12801f42. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/JPPC02414327.