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 0x6502e1c565e2d03b5f7607d97c0926fd2d5853ee72ca540dc424892a3a910ee8. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b055947-21bd-48b0-ad46-d45379b56ac1.json and https://artists.proofprofile.net/proofs/artist/4b055947-21bd-48b0-ad46-d45379b56ac1.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 0xe66aa48a63d3219f5061591bb4f81a263aea310cf5db1683680a051f63fe6af8. 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/ARF037100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccca2481ed368bd125c4e29db9cd9092c4d9361a354244f0cb12e9f69bbf72a. 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/ARF039600897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc028c87af5d4c3982e8b8e133a0bd22adb9fdd44a2c3e8a37537558e71354a94. 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/ARF037100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45f969482eaf6148c07f0a1d08c1e311928d8ce3eb12d8c1059b1a0b90378de. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF037100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7e215ce5dc74fcb0b332c9b5a3a87c2e46ad7a7d870285d0a6206ab231d1e1. 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/ARF037100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2664965c6c35855f4c4bc65c447719fb1ddc7b806558a5f5817ae7a509ef5a60. 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/ARF037100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5155f62954165d940ea3808b5742a0efc9be13ff8624f3bfb6da4e3654eaa3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF037100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0203b1c37a372035550d412190150bb39909926bad2d9add7ba1c0dd32e780c3. 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/ARF037100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750f3c7c8830fb9ee3c6d784c9aaeaaf045342a17a30a4d78aa870371029f9d7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ARF037100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90a59ab6382da5142f092a4c230a2c8233b934fc01905b418c363053509dc21. 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/ARF037000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ca9638de63b90dbe93ea9e3955e0490f4d7902df80a831025e339fb85f9141. 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/ARF037100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52f98c0439058e4fa4d5faf53f37dd7b03c867facd3bde85432359041be024b. 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/ARF037100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d27bcc381884750b1d0cb995e186de34299781d082158ab296c84545676030. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF100200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0c1f80d9a081c52f9b2edc8fb44e90bdb8044f7f4f534077c0da5c24f73d96. 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/ARF039000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f939c3e7569e1ba38e27ce48deb18545488aa136e418754550f665af49741c. 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/ARF037100149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6523f0eecee15de7fd557d80c488e723c748f042fd2adc35f706adf1db86e7. 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/ARF037000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac33cdcf7ce0b6d77a1fdf4840b17ea23a5568b8cdc7a5445cd541057ddabcf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF039600906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f6de4247a18274505a25a9733f6b592c75e83bec49de1673398162d94a8e07. 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/ARF037400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08ec8cd80bff6915f782bc1721213c83f1f5b290ffcc4c49139a5647ec6df7f. 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/ARF037000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d41284eac3647ac644d289bd441dcadddc51874fc384e0f572604b5b78eda8e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF037100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91913934c176dd7efd0dfe3cb9b54d8ee2152258b64c02c6b1567c22b8169f3a. 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/ARF039600898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccca2481ed368bd125c4e29db9cd9092c4d9361a354244f0cb12e9f69bbf72a. 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/ARF039600897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e3b9fc841b793cded4803dcdf500a82fc0daf51b4403a4be4541329e75c561. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF039501789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec0c91ecc10533d68dc489a80fdd40051a3cf689505ef7574acdfc0e2a91d36. 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/ARF036700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b51d8b7e8d122bd433758a52722a6c05ba4f96456ab3364c8e8810f53ee473. 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/ARF036800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544186db8adb9a63165a75f913c66482bc7b1d7d1d459a5f03e9d7657ec35cf5. 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/ARF036900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60305acbdf1ec28ba5e2375435cce372cef90efb370d6a33776d2546f86c04a6. 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/ARF036800000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd90d25507995df501196387314441871be06e4e63d74cf302efdbf596136fc7. 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/ARF036800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92a34f891bc251e051bdd1d3cd8df919bbd127b8a0ebb3ab1f054b542a7301b. 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/ARF037300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3377c03e8d4c4e7c6cb4a59b150ad044df817cd5718eb2b8b5e90e04d19cab70. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARF039801600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb38029bec0e7df2c2775076b1e291f73b4047156dd4aad39380c66d12daaa6. 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/ARF037100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5779aa7774dc324d9ac269841593fa20981e136b37e70b64d3a7072906214ee2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARF037100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e82855a28fc1b6cefd6ec06b3636482980e06998a14c2a7b354a939333df1ef. 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/ARF037600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8636933da315e5cab54453452b4d8fcddea7d0cca1afa54b4746b066ac3d9a44. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF037600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7eaaaccedab90665141239f7192bc0240a70343b7240c43f27a961c22b98ccc. 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/ARF039800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed59f3fb6db0c62cf20b1649326ed9e755218701e2cbdcce8a38528d7bd6c32. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF037200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91913934c176dd7efd0dfe3cb9b54d8ee2152258b64c02c6b1567c22b8169f3a. 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/ARF039600898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f6de4247a18274505a25a9733f6b592c75e83bec49de1673398162d94a8e07. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF037400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680017628ba40580a48ff8ff44d65a7d5152a1697b9de1c13b5137d29be8ba02. 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/ARF039701132.