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 0xcb70bb465ede5cea7536aaca6e23507831a3a836318dc2a9c14f82bb53cc19fd. 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/670ffdba-5b90-42ae-b88f-3fbc8f087c40.json and https://artists.proofprofile.net/proofs/artist/670ffdba-5b90-42ae-b88f-3fbc8f087c40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pets - Das Original-Hörspiel zum Kinofilm
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 0x5f69ed7117029e9d71e32d92588ae13e4b579382212140af1a281a2760c74101. 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/DEUM71711767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4aa9bb8add7611e1c7b50a6839d0d61a02ba03a44488d44db155fb09063fe7. 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/DEUM72109127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d734f4d31903d9698e660ff9e6263d54f070e49d77b455919e4c94c03f06e7e. 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/DEUM72109128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8053407d0202c2f1461d568afc55bff960fece2f727024847a63738ce1ff6f. 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/DEUM72109129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa764cfc755a3a1fcec9fae4d493db5f13156f2f43337c4d2a42c2d93310839e1. 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/DEUM72109130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87646d2e187db117a87004a3de790982b20e5b268a85d9dc0b52f920bde94a6. 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/DEUM72109131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba852b928f9b10c828b4b24da698a7a014a91a82ddaae6cfd7b2cb4788d5fda. 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/DEUM72109132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7764dd47123f3e83a4b0da3c2476c73878043cac2465607a384214ad5e70cb68. 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/DEUM72109133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec06f52869ba125bf58286d35dcf1bd65fb6833352a255090dd765b451a9e8f. 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/DEUM72109134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e7fb5a44ee51d31e9ddf91ad09f0161469b5a98a9f56c441a3d3dbeeb493df. 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/DEUM72109135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba52ac85739ccbc7dda0ae5da5bfd1f2c7ede0782c8c15484dfd40c74b3c6fb. 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/DEUM72109136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6f34840dec34c94d05f2eee9de550726bb79638f967501c080eba11de998f9. 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/DEUM72109137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ec010bd12401d7e9085cc6ca309aaee1f493eceb20b90cb9ae5506dba8dcf3. 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/DEUM72109138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd091d3cf5ace22e1c6bf0de884fde182efd0e8aaf3890a9202e78cd0b6e75f8b. 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/DEUM72109139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7088b47002f0f1523c666ba41ae306054f8324aaecad8e2fce4d92f3393aae43. 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/DEUM72109140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa539c350c8e454e4acb71055f764cc5c9d24f359820f41b0b4beb3585f69df9. 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/DEUM72109141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fce509207a317888455ca6d4e9aaec629af61eac5d4912a8b725c70592a89c. 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/DEUM72109142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8460cbb2416448fd63adb48db49d129af7183c26ee36723c7fa37536bd3d82. 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/DEUM72109143.
Pets 2 - Das Original-Hörspiel zum Kinofilm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c718b3f6697e95a379a7a7d2886e1fe9b149bdad90190bd2e825092bd0be4d4. 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/DEUM71903010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6787650181d537d55a616e29908b6abaf03bd2dd8b04cb6b3d4527fd2f85220d. 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/DEUM72109178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1643b17667ffa5100a689e82bef49360ae31fd5e28eff12b21c4c3b47ee86d03. 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/DEUM72109179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4105ee398037d06082a5ebd7c122540a119afeafd4f3e92205ee71d4d0461b. 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/DEUM72109180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9798a123ae6fd0b289ba74d54e6eba507b8a98d5bc1c61aa7b0be2cb6586689f. 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/DEUM72109181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40d815c8458fb166115b0e7b1ad6983387a6c7348e08d9df75dff2d269acdbb. 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/DEUM72109182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba2cf4f1b703ed30dd541b5e0a412dbb9fdf53392263b03946078100a4af835. 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/DEUM72109183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a11645ccad9e7e61db04a4016a3926a66a3d7b477d78790eb57c0072261232. 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/DEUM72109184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc082aae914421991866b3a735d0ba5388a91151c96364a07883c1ecf7ace4b94. 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/DEUM72109185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ca74ea4f1ef5b40e46201359d138ac25d4a1490bc9e49e62d87708773aebee. 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/DEUM72109186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7f33c248710dd1fab1b29b89f7ce4cc6037c6a772b4409f4861770e6905df5. 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/DEUM72109187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5032fd26839636e023ee1f6bdde59e3962f832d4f578f6e46fff8005eb37f149. 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/DEUM72109188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434a8e6580192a63935db1b8ddb8acd17b9ddec95c7680e5d63a58336236c0cd. 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/DEUM72109189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d63185a375b587dfd9e9cd2abc030431ca776b33b1d369408c8830e8b64455. 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/DEUM72109190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a52faba45a6d4cde4eb78b1f79300871006321c787490ee6b1556381e2ba9c. 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/DEUM72109191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fba866228179ca56b483f7733a168e7a65d6cca91c5e2a660225f737e8c657. 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/DEUM72109192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe102c7d129b8043b3c816e37747da5ef6059448557e0894f84fe94761bc61c98. 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/DEUM72109193.