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 0x2169c5f3cf8ea338358c362f891a09b8209ae6bad417401fcbed3ba4093d2c00. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9972f178-2974-49bb-8408-f0a7692ef5d0.json and https://artists.proofprofile.net/proofs/artist/9972f178-2974-49bb-8408-f0a7692ef5d0.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 0x2c8b7067325b0eecfd356d06223aaece682829cb22962182ad22205f5ca93bf8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/AUMZF1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3219f7ed9ea4f80d557bbbc89e22d5c8859d3c888865a28de3e8b90c2102ddd. 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/AUMZF1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a055530ae1dfc054b004a2e8a685b74efe860ffc5321d248978765bf3f27a06. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUMZF1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449650fd184e86c4ea931faab3312dee67b8034b45696b5b853e21e7565b6b7e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:05:14Z), 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/AUMZF1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222d20feb322fb374ffe5b4dda40f8670aaccb3ea5b604c9b88ef6f0f82b5753. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/AUMZF1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0618fbea72fdff33d1995e89d6a3bccfa0a9f1c6695fd0f9374e0ba655a111. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/AUMZF1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba9057dde99c661588ff8bfe60a029cede225d263d9f58aef6c0c5af9f8e33a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AUMZF1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23276a865b48544593fe563d5b5da15258eb12b0715238db5b47c94babfb304a. 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/AUMZF1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8446eafbb3fb6c71790c5646a4a6851e33911a75b4965f887c7022d5fd5a2fb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:50Z), 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/AUMZF1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8951ff8560adf5020635ea8838d87fa2642eee0d3df00468da7dea9fd4fd2487. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:34:56Z), 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/AUMZF1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8b7067325b0eecfd356d06223aaece682829cb22962182ad22205f5ca93bf8. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/AUMZF1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222d20feb322fb374ffe5b4dda40f8670aaccb3ea5b604c9b88ef6f0f82b5753. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/AUMZF1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc904d771cddcea901554a9015fe09abae09da60fea7c7e4093e1c5df43434d22. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAEP2023899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6755df62e36f199f480a00dd44544ca5b3e1a56ed821ecf52eea5a4a4e0a32. 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/TCAEP2023904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c1b69149383b8a617bb0dbe4b0129ae55106cb5a7e2ea0d2bd20ea1038c3bd. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAEP2023916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1812d4a36c09eb90b82cad774d63891873ea56fd7a93e86f27a0b38de83ef29f. 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/TCAEP2023965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cc7ffaff947d96cbfd74f47155d63921a2f3c1907c49a19e595679be5176ba. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:30Z), 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/TCAEP2024042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd19176129225cddea84271bc5b0586476a123647bcaa932bb774970e120695. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCAEU2056052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca5e1822d155ea7aa31a8d1fc79969593971b748bb2540ba6212764bdb94e12. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:24:07Z), 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/QZFYX2172410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8806219204e0d282f3a38ba32db6aa8b5b28edd69846a548ca0f601502c6c30. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFZ72177584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafba4f91e58387c011fd4d4d7beaa8ede3d27297d91485541113f57b565509a. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QZFZ72177585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc102fddde20f5e14c69a8fcff4cb84ba65c9d6cdeb4d714f24da037dd0ff19c3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFZ72177587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaeeb97e967150ebaddbe40e3913a5d77df73f0b66c3d9c2a511601fead2c11. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ72177588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd963044a19de2207e10d2fcee3284b1ec46c6ec5aa4000e5847225127d73b35c. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZTAX2256663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d26e156ed45a7d634c01f482c4737f9b88105bc01179701df1ebf363f8d8ee. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTB42215105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c76d2b1b643bf1748cad414b1855118f3416384448e28a4b5f53b3d63fd4868. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZTB42215106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecc68542cf69d93b1a5cf8b9c768a136f3a4069cdd8add5d354b787c68a4e0b. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZTB42215107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749224436915e60cd6a0015275f0e0959d69775b5b7e1d7414dbedc99074b532. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZTB42215108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd200a911366d0d51acb3821d6cd8674fabe31cdbac1495e31c84c776ff01d5. 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/QZNWZ2345931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ed36068d4ea96438fa62c331b062314160c7dca41c2975ac0879883aeb5c5e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZNWZ2345932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc2cd68f7b11eae3df12827879f19b03d99966481eae6695ee4c94dacd904e0. 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/QZNWZ2345933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc312afa5ee56280c632382017e10ef232d05d675cfeeda81b9fb9a14f1999c8. 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/QZNWZ2345934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2294c86d27d91eec19f81b9843d7e707c355d4eebbd6f7329e1d7ad3b0231cb5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:57Z), 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/QZMEM2498183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb829be343ace0b7d15ca48c5e5db68bf9f5a9822d0aa1c7c90dc9331fa4856. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:03:45Z), 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/QT3EX2458274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94df92b2fc1e230507d5b233929918a7cf73a51c91b01377f6e30976feb9c955. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:24:26Z), 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/QT3EX2458277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9430ce9a55045e4487f28d6ca9d49b8cfc0c336e506e652ae9b96f555cbe82. 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/QT3F72571790.