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 0xc071bbcbcab8da3440984c3e9db642030a0d26b47509fff4764e4263a5260f84. 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/4e0d9a59-9f22-43f2-a8ff-70f37801e469.json and https://artists.proofprofile.net/proofs/artist/4e0d9a59-9f22-43f2-a8ff-70f37801e469.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 0xdccf95d98ed6ae47413d4106b53dcf8f87798d6f32458a2069cb355f0b9065be. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX762489210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3c36d6a40c1463edecb2ef5c18eddadaeda4c0ccbbbb52ffba2b9c11af57ec. 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/FRX762489211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e832ecdc07b0a9006e59f7d679f9eb32ba11243dc59b5a5fe16f9f918edfceb. 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/FRX762489212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1377377bdcdb64197137b991fdd419cc88cf1272aff40f10238d36de5a2742e3. 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/FRX762489213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf711e00a55d9ae18f1faa5711139638c276939db8e75d285616ee226b6ead5. 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/FRX762489214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7884d923da4aeb3cd91d505d68a8fedad460750ef7cdf2b02888e8f1b324cd7f. 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/FRX762489215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c22d6d336b76a5df68d9ec8d36e77924a9444424be7111bcf1565aa419e08af. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX762489216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3c36d6a40c1463edecb2ef5c18eddadaeda4c0ccbbbb52ffba2b9c11af57ec. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX762489211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc52a353909ed66324295d179dd6dad390a4742be83b2551ea7b02120d52692. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SMRUS0074220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1310edaff93b4912a06c5518bfc4a58c665a6006afd417f07ba45e6447cd87. 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/SMRUS0074160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2d2da09caa97053e31c158920dae4e8cce49d36953504d346ccc61285d3b2b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SMRUS0072046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cad42e45a1619f9f221f19dcbd49a11011c1fd9ebd0b61b75df05790fd3ade0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SMRUS0072047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc369933434126d0ca2c1e2acfd04b71c347fa9de362f7a96fc3373673802bf2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SMRUS0072048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a53e93d2d82e32ea42ff5b23c14a82e2cc4f9abb93b90aff36c785e50558367. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUA1D2114898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711dc595d574fb30b7ee2bdbfa983e7b7fbd62b7e0b82c017472ebfdce742a50. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/RUA1D2048303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde7aba52fe4ba9c745fedec91416f0c26bf9e227816dae4528df742606f9ead. 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/RUA1D2048304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4d017b77c60a979da2be7cfc64b4996e6eccb995899752359b4210ec1049b4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/RUA1D2048305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b48ea32ed1a05b7bd21f3d581651ef9fead47fb5b6de7dd70dea783a29fd01. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUA1D2048306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4d5291e3538f233639dfab4104a4b4bfbb7381b5a021f79aaff9c61cf129a9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUA1D2048307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcf2332b1e2069738a23ed73a336e420bcfe5dbb8861601a755b9c2dde7e171. 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/RUA1D2048308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2052a7953cba5eef301cdb28025dd96a4ad46f9cc25c007fc684c305787d0f76. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X41998269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e43f1038f1cd3fbea497838d1394187bd4b9affbbc774c1de55b6d906228ba. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR96X1857567.