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 0xd7b83a109b88b542dd2b97c4dca2d121b71acc7f6953bfd75332a396a082f9e3. 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/d16853cc-bb42-46a7-ab6c-5aadf3596dbf.json and https://artists.proofprofile.net/proofs/artist/d16853cc-bb42-46a7-ab6c-5aadf3596dbf.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 0xe87b66768d8558eff9dcfead34b1d301a81d2ae53941448b5d36e86d405c60f6. 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/QZ5FN1891976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a34a3bc53823c497e34f18cfd183458eb85c492e486400d30e070b8d4bc238. 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/QZ5FN1891981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af7eb4e2463f4c9cbbca7433427449103787f751b866c847e18de996bf226d8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:32:00Z), 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/QZ5FN1896466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0adfde6ef99c671ecf8f2e972efde96a6473c06dd7770580ac4e2212f7a7e6f. 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/QZ5FN1891987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f71918ff84ebf105876d3641960144e4a28afd38ea0564ff4e02335e9a94da1. 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/QZ5FN1892009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd3e90a4011c070cbff59a70db629d91e93cd1143915d938853d755ec6567d9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZ5FN1892053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591c61740160fa40574c4c2139d170371e220da89fd3dd436c2ba16825a58f66. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:34:18Z), 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/QZ5FN1892054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0f04f085d3e0e3269bd7a6e202e8f925ae683acb29785bbe7e41dfa3fb6b17. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:11Z), 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/QZ5FN1892080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23193b0e0c8ee4ac809d8bcd00c311df036a1796f858bcdf0ed772e23366cf71. 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/GBWUL1817635.
Vho Dzhia Voho (Lo Pomba Four - Shona Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0187c036588deedb329624906e20b5ea63816b85bd5dbecbaa1d5a0d9584e3ce. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBWUL1817636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdff2a102639a846adbeadb25eb1d749947b53fed7bbd7bcaf751cf785f45a6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:17Z), 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/GBWUL1817637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76432a92d1ca332b8430795f0e400796b2b7696a1a6b32f336eba44b97e3eae0. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCAIJ2407509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb755082a7f3b3bef896efdb472a267d1278ae1676611333755576716370fd88. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:05:22Z), 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/TCAIK2425736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773364592b1469257d4ad068c548ac43b1ea7befb8bb6756a3b1604161c3a2b7. 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/TCAIK2425559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7ea0af40e426b60e76944ebbdbb526bfcfc3c290215814f649beab5b3b1ff5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:29Z), 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/TCAIJ2425519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2e5b83cc96c87ee27cfa4cceb0ef8b94702409d076b049f63b667bae46b3a5. 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/QZWDE2403322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d31d9ff77c07ea2c3e7b409997a17b734f23959a1bcbf947dc4d343aacfd5. 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/QZWDE2403329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f231b477a0712e43933929145a36ae5ceeb3922a80d2c37ed6d96fe061c97b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZWDE2403335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd1b6ff1f735495908cacb0ddc81d3cfe76962864a9af8f61ca91611287111f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:28:19Z), 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/QZWDE2403362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dd4f132c25741b75d5310c720ed57fd52a26bc49d68a3454285e95bee256c2. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZWDE2403426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fe04e16785d1d2719f73f0dfc2d6a6208f49008df655f0e3f8d630b3aaf425. 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/QZWDE2403449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c268778c68e93f873de151dd9adcbcf6b9ee812405f31654ea1dbd195314ae0. 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/QZWDE2403455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00f863e772441998be5317f7f910f263903059ea3e95b7e2736145f0ae51d1a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZWDE2403476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c7dc1a5a3804f51dc3c5e6fd43c3d7e2062f191f63427f90426c1344a4827b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZWDE2403490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f46465499b74d5791d68bbf3bf248a504bbd9f1b1e25381276dd713a092532. 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/QZWDE2403555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e02f8706dfc6d4acc43c90d2843f3cead985aa451156cd16a1de0c7f873191. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT65Y2501589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33d065babc4eb632e7435aff62c405bd5b5a0033cd077f442301f9621070069. 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/QT65Y2501599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c56056fc238816007c256bf35e5742c5b21624703fa1edae527a2449b20c161. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT65Y2501614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355dbaf35be6e9174dd5732147860f44d7bd93ca08e6c521145c830a2079e9a4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT65Y2501633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74be3c8d60f8649ac1b48063fb3cfba5fb15043b6b8f788c0492e31f5525331. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:37:17Z), 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/QT65Y2501639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefda4e6adb562284140ef23a047bca383c8d30ae9d621639e19adbe9bc7089b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT65Y2501649.