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 0xdd8377d56611f59c8443a07288e67c2346fec3888bfc1cbaa96435700d5abcbe. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51229a0b-9286-4d25-b14b-66a6a24779fc.json and https://artists.proofprofile.net/proofs/artist/51229a0b-9286-4d25-b14b-66a6a24779fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Toe Laat Je Lichaam Tegen De Mijne Glijden
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 0x01abbc5b40b901e77127a4ce283878519d6de8344165d553a3865d7fe649da85. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/NLE871411201.
Pure Verleiding - Dj Willem De Wijs Annulate Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5228784b5583aab8cf8c3c59205e87cb24e04f514c8390f9c536d835d29e27. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLE871424805.
Eén Lange Nacht Met Jou (DJ Willem de Wijs & DJ Ruud Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739bf37568c773314e82c56dde49faa0b6a0f673be801eb1a60446ed78d5182b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:44:08Z), 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/NLE871744901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2f4c91414725b73ac491469b689a5d26d2209441829eb0f0d9da5383920c9c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/NLE871735701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a665359dc7d53430f0af305ffc14c29d4b843d7456828d578988c8d8973d12. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:46:32Z), 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/NLE871529201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a60d54c3ae8d5d18a754590e432e8aedb8a32819a630d2cb04cac6a888a08ad. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:18:27Z), 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/NLE871932000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ba0b101da33fc34afc90406e6eb7a4209877aadb2e13b35bd1b1c11e2af545. 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/NLE872135101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61567a33c78692bbc2d137a8c675447b91e9d0e86e8b9bf318e61d8d10d49720. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:02:54Z), 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/NLE872140101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20693cd0c5aad68459c84a927939edc40a6c396e439a3ebd739d08001556159f. 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/NLE872206101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d5d8ad454dab41601e35942245f4eb2512a2d42c1abf8e52506ba00abff6bc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLE872213201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161cd5ad982043653042b91fd47c64cebf92654891d1c30a3db2f382e109bafd. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/NLE872216201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b1780e17a01cb59cd7ddea883bc4ae5018f85c159f34e3e7766956c5bfe241. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NLE872307701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbb8dab35aa601fe9bf94825e03bab826364e50dc8d279a39676ce185abf388. 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/NLE871938000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ba0b101da33fc34afc90406e6eb7a4209877aadb2e13b35bd1b1c11e2af545. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLE872135101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06e9634a849f0eaa91134eee0beb3335dd07b9b64cfae1b130e37109ccb8f4e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLE872203901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6f566e06aec0404fd2135eb77e32a6c1a825efa9ce0b195330507f95a69d29. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLE872179101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab4d99c028358ea3d8e81cd5d50f3df4bed33e6a28103d995e271e7a2ad5e9f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLE871935700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6396842c8634c4fa49948248ca43aa14ad79ddd3fcf418d9977086144926773d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLE872411106.