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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383173dcbee0693e098d904a115a61abe03ef77da65a6bccd4dad63140f35387. 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/b3f6e953-a97a-4aa1-8c65-57f852310074.json and https://artists.proofprofile.net/proofs/artist/b3f6e953-a97a-4aa1-8c65-57f852310074.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Planes 2 - Immer im Einsatz (Das Original-Hörspiel zum Film)
Planes 2 - Immer im Einsatz (Hörspiel zum Disney Film)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa577632e17b06d2e4fc01dce94a491f2b27ac85a18f4db6cf0e8c3b50c0be91f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USWD12320860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1278205f0be77f3a9a257bfec5a7c8ba8b1bf2a673381ddb449ce7b2b630f0. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USWD12320861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60192f49fa879bfc979169340c2b61f31f4f87c87863cedc47061c2c36df5bd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USWD12320862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d1a0633d78fc8506d3ea6d1787d209fd684be9184a53cfb7b341f058cd5847. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USWD12320863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0fc5aa7b80e105cd62d4e65ff03de2591fbe4534de740f032b76ff239b1112. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USWD12320865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d647ad4a64ff2d66718793ca43ff929976523349c2f1b158c54f8c4fd9684f0. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USWD12320866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca7c6818d679af8f4a0b11856ac011061558bdda521c8bab530f12ab64d40a9. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/USWD12320867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cddff12393c86e180a8473e8e948d0fcb3da99e3906b6ef53611d1a96a4803. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USWD12320868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29de7de719ce51205a92c65441ba21293426218f5c4ca593ae2109d26a49107a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USWD12320869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9610c5cd57151763627141a5887e256b67f4cf11810d62b0045051f4c52df1. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/USWD12320870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7845fb01f3034afde8e8a04f0b4121eae6c9c73b9e110056f56b91fab8a0d88e. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/USWD12320872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29721789486b6bb91c8bf4f0a56bc2a1f8866c5f1ab82fed24ef1dc504715e5. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/USWD12320873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe702ddb6b18a1a2a0e01f9944237e9bfe5889b436bb5985331ed6d0afd7c7b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USWD12320874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be3321931c5fce8b122b8b45a4588cf97651433a857dbd39dc5626632c46d0a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USWD12320875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b99f622e50b3b192bfa9e1d3aff65b42c98f0820a659a639f6c393aaf17be8f. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USWD12320876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb421792bc5a7dcd99191910d777e8e105f807250d58bd3c6e11f7da4d9115513. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USWD12320877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95d573d3ea39c98067a10dd2fa6086af1b187411e81bd2913753f82f84ffce1. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USWD12320879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b0aff3f39729673505ce92e11855833af0cf5ff06d4ba86ef24719870f9c36. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USWD12320880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94b25fb1dc1578b0473187c12e9571e9de0cfd0168963a8be8ca94f8a19f8ea. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/USWD12320854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62ef5bbcf60698b26b2c3220791af6f49dc5581089e419234a80317a86c9266. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USWD12320858.