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 0x6b6654b277590abf25baed9e8e1750e1d3e8909692d77a0e193745e25a5ba36b. 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/c16ef078-54a1-48d7-82cd-b82c67af911f.json and https://artists.proofprofile.net/proofs/artist/c16ef078-54a1-48d7-82cd-b82c67af911f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Laat Het Licht Maar Uit (We Doen Het In 'T Donker)
Zou Ik Van Iedereen Een Drankje Moeten Nemen
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 0x1701c93afd4e908f67fa0090ad15bca74005fa435bd4de1ea5aacc84b4b5ff1d. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:01:38Z), 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/NLE871315201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69520fd51ca9244edf0239762aa390e34501a8aa9a61e4b5a38d6a27c607d4f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:20Z), 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/NLHR52180875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a13a022091add892d83af0bb8cd8c0cf97eeaa1d72374747198a6eb0e4d1c27. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/NLHR52180869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd6b88844cdd7ee1396d66c2e87f6582bb253f7a854b218a80433e77edefe52. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/NLHR52180866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0687492b32926563b6651b47027599b74674805e8861d5fdce4152a13126cf26. 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/NLHR52180877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e6ae613ad80877ee3a82c0f4cae989a01705c11cb78df151f927855a8f3e63. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:42Z), 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/NLHR52180876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9c25d31cca5cbd8bc5ae207ba094fb90244605f3c293622abe6c3c6940abe6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLHR52180865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb71aedf7b5a59a95e6a6250ae4bc74087212b8494ab2e01ac4d7672159fc95. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLHR52180868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1239c3aba887137e9ae910d06aa296f228cc42ef7fc27af20a145ba156d5ab13. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:02Z), 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/NLHR52180873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe574f0505b9519a7a08ca523d65bc03a5de7e3a619ebc732a04d1ad0ec75bea6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NLHR52180867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0676d385c8d28c5efa150d8267ec6d36f307563a7ec17aebab504b3f0e9ae63. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLHR52180872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513f2ca1a94a401f53250bc5ec7fd03ed52025e8338bbe4c290ad24aa86c6fdc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/NLHR52180874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce55107e1a2f7a20c774e8e4d4c122c51e77ffff0415e3dc6f7b93ab5b285ee0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLHR52180871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1beeeb581ff6a2c36a88916ad6f4ddb4d04fa3106faf450419e0d73e0695de. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NLHR52180863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d34894c785544e4d3e66e87dc682343f7822698b2913b804005ae6771e95af1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLHR52180870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9237237a6c017e16117fad0d72c197394d0a24ace9b75c61f942a75568d78c6b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLA6A2500033.