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 0x2184d4e121d0dfcb6b83aebaab373b33b652b5e5a5a3b07f8f397bda027ff9dd. 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/d3f2bccc-6504-48f4-b34f-35847d49eff3.json and https://artists.proofprofile.net/proofs/artist/d3f2bccc-6504-48f4-b34f-35847d49eff3.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 0xb691b5834475995fed015f69fbe930044f38f9e97cd5244ca129fa39a0a5d08d. 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/QZWV32449854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e911d0d26a38f6467771c7623a74589ea698ec754736652d47d39379a912d28. 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/QZZ8A2418293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6772f7e08737f4122a2eb1eede6b2e50b0dee33a9f0e93e81a8f9c310a0b63. 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/BKSAI2400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35907d0340276ffd03416908548dee86770bfe9cfba8b89dafeb048c695e3805. 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/QZWV32459125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe994566e98a63b3ca270cf4467d28ba583f547568fcd04c47eb0998948fb4b2d. 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/BC22M2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413b208090854866fc7616d8e3d1fa3927679063f9cb08cfdf97fb550774b631. 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/BC22M2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7c323ed5f531d406ca02105b1d59e2853347badeb129a83eaae1fd9b6a8b34. 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/QZFZ42572662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dd9d9d36d01831d782e3f01afa659d6ea90316643e5dab197554050e96afa1. 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/BC22M2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a2432fc83eb22b6c266456a48a015b7a3113aa6a9f5f8b4f0a6dc5a8bd46a4. 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/BC22M2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edf4373ee7ce8a6007689d21f98fd898c909974aca1818b927ed4f0795f4af4. 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/BC22M2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773caad8d5e183228c76995cc85c76d5751e580c488d33532467aaac8f390ef9. 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/BC22M2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd146927a48bb9f5b5dabc48d08f3c6aedac86855f695772dc615a7ee9e320549. 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/QZFZ42572661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f1d65be086b453eef7547436be098f9c1713e99b0ce2146f89ace51b9ce341. 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/BC22M2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658578f15b8a32ed61d0b256e0ecc2752a93b2e259882092d9eb88c43e944cbe. 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/BC22M2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1874c7898ca5e457a2894162c525befc6079b900f5826b41c69cfe3433bf9ed. 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/BC22M2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9acaed3f006fd832f3c67253db2dbff5051f55eeb343c59c697021cfa2f7b0. 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/BC22M2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf194b8bffdf677148f8fe9169937623bbe448cba48e712054a8799ca9a0de6. 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/BC22M2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e297d5eca47709123d2e732b43f507f233b3c758a11ded463b990f8f2645438. 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/BC22M2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7fcd33ff482898985976f09acee4c7566de9932b0f5e545d0151d8507f47a8. 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/BRKO12500583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a35c224191a05a3c394c5fc30f0b2281c83fe3bb9afd01c802572b0055aaab. 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/BCP2X2400349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094c87882ca6a084549559e02f9c61ac4c52ec6fff98bf9305aed9dcab6ee881. 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/BCSOR2400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a35c224191a05a3c394c5fc30f0b2281c83fe3bb9afd01c802572b0055aaab. 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/BCP2X2400349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48502ec8d8a304f73212402508dda70b532e703c09fbcf64ea673271978980e9. 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/BCP2X2400350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5358aa0df15170a9d38a404393457bee2c05837b0d1b5c6c60d005234d8c27. 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/BCP2X2400353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac3358c17aa246031a103fd76ce14a36504aa6cf3ceee384a53eeb4d7554ccb. 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/BCP2X2400351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a912c4595dcbd0574967c6559ec84b3d26b9b6030f2bf6afd345b9b4a8156ab. 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/BCP2X2400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85080f29f67d0f4d0353327cc32c0c8a580eb5e2c8af44bd4d6399b86914351. 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/BCP2X2400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc369dce65dba9ef2cab43b862617da24c5467c4873cee8aabad38b6593533f30. 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/BCP2X2400352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafedd54e99b151da0f46078329cb1228c209025f944f9abe4faa8ee463eab930. 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/BCP2X2400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e4cb24fd497c3622b0a0932426cdbdfc97eff8370c77c08d95e79c685a6031. 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/BCP2X2400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85080f29f67d0f4d0353327cc32c0c8a580eb5e2c8af44bd4d6399b86914351. 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/BCP2X2400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e4cb24fd497c3622b0a0932426cdbdfc97eff8370c77c08d95e79c685a6031. 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/BCP2X2400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0811b38160d3a696b6354832fc2ebd44f248f01026565a7e9a75931dbef233. 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/BKIST2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eac89d17eb9483240524137e30a977783fe181386f7c5fbe2a593812bb1fc69. 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/USANG2432428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0400c79253953b16a540f8cb3d377dac28c71d25c758af5489f4286fd83440. 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/QZNJZ2488047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b6d295d6cdbce3fceea579e36b1f337449ee2e3b56984f2c7f02662720f64b. 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/ESA112444930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ef10053ddf086f8d3ff5696d08c85852b24180e5020edba500486ad791dede. 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/USANG2431701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28293209eceb4d33bc728b48d4efd597287cce45469a2baa88700ebec4f777f9. 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/GBWUL2596729.