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 0x589fb11a0b888d68a16a1cd103ae2e4e34afd4270bfd2f7f28208f6a8282bb25. 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/c79e6081-5a54-4466-a6d0-5e46187819f4.json and https://artists.proofprofile.net/proofs/artist/c79e6081-5a54-4466-a6d0-5e46187819f4.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 0xccf004a2e4ecfee657a6821aaed45ade2ae8b023a2819bccf2a456936d80f47e. 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/TWAN79060001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230dc6530adb42d4775991b4ae23616e247d4bbcf48a7c78cc140579af1072fa. 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/TWAN79060003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698566f5b2eec47b95b81179d288766c84422b3f1c462b8b88f2311c5e542f2a. 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/TWAN79060005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea011c505dadc9f59c0c5ef2babe5e7c83301fc56b6daace224eb53d0a21f270. 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/TWAN71260177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7fb0c04fa92c8a442c478484852d9a43037006a948f623d9b87cb65ce424eb. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TWAN71520001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa214c11b9579a8503b99a0e5b54ffc44bf09f1031982f3c9d9a31f81963109e7. 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/TWAN71520002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fe21d12581c4d93cd8447ad5b1934ca9ae12bad783d245b72b585ab7570784. 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/TWAN71520003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52fbe4fb86d5abd2f21c2b217415bb2b49192306e097952d4a55c03edece635. 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/TWAN71520004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf293116b64b0734c3468e839188c52db7153daafff8d1707cb0b9f70a94350a3. 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/TWAN71520006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3215b9f147085e09a23eec0f1006f58c10d92bf47d946c10879cb7b4af761be6. 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/TWAN71520007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719b4e12fa6487a305da2ada73cf5b92cd7cc5925bcf71bd627849ea6efca5cc. 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/TWAN71520010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2174f6bf05dda0fc3d2546202a09654d8473ff7da4f250b1feb05a3032c7895d. 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/TWAN71520011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0fe95c351895f7bda27695e6cb3016ae54dbfe20a42a0395ae0f055c56e4f5. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:46:56Z), 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/TWAN71520013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19b337e6758f11983d5fe8d8fd15db08ad0f4a29296f6e11c2aadb1ee556658. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/TWAN71520014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8e14a672ea20afc19042529d91dd0345bbeb266b63e9c6309ac5bf591fd0b6. 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/TWAN71520017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf004a2e4ecfee657a6821aaed45ade2ae8b023a2819bccf2a456936d80f47e. 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/TWAN79060001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea011c505dadc9f59c0c5ef2babe5e7c83301fc56b6daace224eb53d0a21f270. 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/TWAN71260177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a144c33ab4cfb4913e3ed67beb616b64993b5355cf0c214fe9f4be20614e23. 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/TWAN70760271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f878c681838d3559ff1918a043917b793d55b22770d70ceeb742af1d358b205. 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/TWAN70760281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2548354dcf2b51765e327a9b484e539cd7746921cbdd134ad07fb9bfdb5df860. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/TWAN70760282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c668fa7af3a68bb622e4f21e7962c8e0873be9c2e852b94672a3d449f6b786. 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/TWAN70760284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf0a71008c95deabb065690a8240c4e80e577458c88e3456553d2eb5ddc2f5d. 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/TWAN70760286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554e15d900be452aff134a336f66c7ed044ca8881564dccfd48b8ab290048c37. 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/TWAN70360801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626b22160393e6bebc0e2dcbe77a16826c32ee5b7cdeef427f47439d1437c950. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWAN71260159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa434cc54268bd1d046613352f6219a692cb8f87c93be11babadb6442708b4b01. 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/TWAN71260160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f74a9ba78386d00278238ac7a346712d37d55d959a0300f7e30801829a37495. 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/TWAN71260161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cd84bb3b3ef1f4b8c6fe95f212590cdf2a546252943ff21faa6471ed646e44. 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/TWAN71260163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890a36268494eac323673199ccdbeb57a3198e6df19d3a52551ef8554ef01e75. 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/TWAN71260166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c289163045346140517d7b197e5ee62b08c343b8c4cb555da1f3e8be213614. 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/TWAN71260167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04678a4c9db160e8e8ad68c974219826a37f3c5ad5626659613001a538cb0747. 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/TWAN71260168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611148d72acb98dd8797814cfb9824733db050aa6f798b508059a36186c8f8b4. 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/TWAN71260169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8f1a0316f04ee84c6be86f1d774c27447bb9bf7f84618d63ece7b6d24f32cc. 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/TWAN71260171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cfde56b3679f3820f9b57677486d719ca64b0afb5e68334981cdd57c01b81c. 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/TWAN71260173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b499f91760e3da2f935d27408d65ab49a0d1bc42ffda7aabf8cf70f2629c4d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:08:12Z), 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/TWAN70360786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58cdee7bd938139d0342e80c152b74fc477a8a4de7aea1059596567c1f726a1. 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/TWAN70360789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698d003a608bd9fbcd7b63b4f96a21e62e2ea6ee00a42f3ed3c31ad5c639bc17. 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/TWAN70360790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b47f115bdd1149f8d5191e4dd8fb4d67c19994e10b6e4ead7625edb381e794. 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/TWAN70360793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c47a5214bbb39381f6e9030ee747e9f0a681370975fadd7751ded1fb66b58d3. 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/TWAN70360795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ebf4961d311bc796fa37b432e130db21a2271ade75a1ddeb85d4e73bc3f914. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:54:42Z), 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/TWAN70360796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2296f4d46eefd508f7bdc7bb67fa07c6bfc8a3ba98b3663d78f9037e9659524. 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/TWAN70360800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554e15d900be452aff134a336f66c7ed044ca8881564dccfd48b8ab290048c37. 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/TWAN70360801.