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 0x98dee82fc507f0f80ccd70e89985dfe8421e145d410be19369ee7d4ae3d6c7c1. 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/1394e856-e800-4bfc-ae85-31238695f922.json and https://artists.proofprofile.net/proofs/artist/1394e856-e800-4bfc-ae85-31238695f922.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 0xaa10e75fd989752ad5ae3d0be2b2f17b97879a79c3a8a11f6553725f5f44df40. 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/QZZ8B2335026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd664ad8ca3502e45daf4c29644d4a1422d3dd2aa23c0714861c43eed3726b23b. 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/QZTV32331332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf67c4da2475fe4aab044633bebf5cd7f4155bf58dc551a6862f2db02f90351. 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/QZK6F2101499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b6160e01d7ac07b03128c4330a03478464f4c80c44013551c49da861d72c44. 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/QZWDE2343765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2731f27f2a825b83b0df9893af6b52a524da5bb99c9b48238030d1f3efbcd886. 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/QZTV32331037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aef75e758bcf55b2b2acc03a3cb4801105cf07902dcd0fb00f99c9f460dfefa. 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/QZTV32331066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f1b0b2adfb8f9bfc71cb4ccde885576e40f033b55ab7f61c89aa719d2b5e0b. 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/QZTV32331087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e4f84a84ace423251081f618dd1f351354725327b02ebaa8958f52e407722a. 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/QZTV32331108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc278b0bef63f5fc0ad4b44d1d9a4261fbdad9259872337273c96f2e329f6b037. 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/QZTV32331138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb7da22f9f7e4804e5dfbe9e17b31e3051e75dd73afffce128e87e8837d2bde. 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/QZTV32331179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b968cbd1d41f8d69cc67b4fcd666808fee4f366fc086f66806ec1ed89888bd5. 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/QZTV32331232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a5197118e3eff121ad277742617e05531df40b66db6ac0c9f57fdf98933e40. 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/QZTV32331299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a8cea38adb5b75a681bcbd51a03daf2a249634f4cf4579f382596b1383a2e7. 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/QZTV32331308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e6950ddb0754a7d92b9dd44dc154258d0cfaf8ddeee468b598cda6450985db. 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/QZTV32331321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e5d9fa2790ba5ded5dc707d1d8eb4a6fa400965c8bbaec42d18d440aa36aa6. 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/QZTV32331355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd572b3565a61a01e6bf8b2bdc5bda08a48d184d9ffc953c31a967ef91e7766. 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/QZTV32331375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d739f11713be507e144a6529513b0c59b7311d54beb36896e000b0e6bab001. 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/QZTV32331401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616aa79818586e0394276021279e4e3f693a1a93424b70512b0f9d437d094f73. 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/QZTV32331418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8883974965588c0c38dfe3df3e8372e387a5b0a89c5d461fa1ce59134c3cdeaf. 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/QZTV32331440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1c2586d24ad64bf0fcad680cc9c4d5fbd386a0a6aabdd90e4a0383e84ad8f4. 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/QZTV32331448.