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 0x174240a23f6475da3a4f675c0e54ac22b64cf72358368735934409af603a228b. 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/6252a6ae-5ed8-4dce-8a35-85110c6eafb9.json and https://artists.proofprofile.net/proofs/artist/6252a6ae-5ed8-4dce-8a35-85110c6eafb9.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 0xfa8ab7d553a365937648dfc2463e767ed5dcff39c3e81cc7e37ff35c3bd2f9e1. 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/DEE862201310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c63ef449bb05f9c43565c58d2bb443bf0ed43887bbae6e253b9ee01d3786df8. 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/DEE862201311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992e200b96ad71bdb13fd884e64e6149ed4d2971ce44a27bf29222f10fc47cae. 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/DEE862201312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a028e02f7c602821dfe7dc47565689ce90245c6f599dee2dd575be19c5beda6. 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/DEE862200903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44514b7fec6914e54139b0408758ac6ae0f52cc3662366bdda8ffc37e2696e6. 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/DEE862201313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5692b7dbca00b284cf74b20c43aca74adb1eaf7b5c240cbdcec844854a62a29. 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/DEE862201314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef0b66754d136aacd5d4d100f81901db0641517f14bbf2395d5863375e44613. 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/DEE862201315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd46341c0f6aad75be336e644ef56108b724660e3b64698682a849ecdfc8659. 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/DEE862201316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfeff4ed71a2814870e4add57c04b536e334c24d5b08ec3a90cb4fd005cfba3. 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/DEE862201317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ab27cc9a706b320c10421b2607c341f3e64f3e7030f1afc3b5a374408f9087. 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/DEE862201056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55778e4521e147e128d2038eb3fb1db946e466a55b96d584cf829dbaac4858ca. 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/DEE862201318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2a38eb46abb908991c4a981ad051e3f69a166c8aec2ec1816ab67f06fbd4c0. 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/DEE862201319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44dcf17f4861ef89f7c5cbb0d1b87fcf62b06f359a1aab850481bb1c3ca2214. 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/DEE862201320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cab0be2ed30a68f12b462a4df0e27dd2bb55387092b9ead6636fe2f5ede29f3. 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/DEE862201321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d9fcb31c3dbd2772749dd133d8b4323befdc9ace4593a226fe0bb81c3c5fec. 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/DEE862201322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1db969aece4ea11470223036b40c58606676e891e9a1b048cfbaf7ce3ef10e9. 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/DEE862201323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761a39908371e859f8fca72da8dae9d2f9c19c1dccfeea7e71c721177eccd202. 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/DEE862102993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd46341c0f6aad75be336e644ef56108b724660e3b64698682a849ecdfc8659. 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/DEE862201316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfb1c5e7ce62c1d40d8bb2077addba4e2a731101800dea5c6600361a4026d67. 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/DEA622401537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0617aa4dc8b248ed836c51ca830306a0e73c67bc76a539677ef006b3e2b77a. 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/DEA622400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad62142094a2b1c0227a87efb88c54b9ff3a79f5fae72215cfa86a0696a5d84. 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/DEKF22200681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad62142094a2b1c0227a87efb88c54b9ff3a79f5fae72215cfa86a0696a5d84. 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/DEKF22200681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ed85f5ad672c761d5bf406b4e6ab8bf36c1c03f52e9eb0291c7087d3050500. 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/DECE72302956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8051ab282b1bbfea56d1f2cbf1f0ad7593048b42453d15b97f29483d159adb. 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/CH7812353591.