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 0xa9cad3d3230ec034cfb808f451a3378cc7ef3fcab3ae40a7710a8240c8abf463. 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/fef743e7-424a-4e89-ad1b-cc9867594e83.json and https://artists.proofprofile.net/proofs/artist/fef743e7-424a-4e89-ad1b-cc9867594e83.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 0xf281cb140c0ec469fc3b7e613880bd988b29ef157b619356d941119d319d3a15. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLC289300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f7ae61a620d06f69179a88d1cad44860c0072c1f7c80934688591bad8865ef. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NLC289300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88090c6d5fe65510ee03f0a8b66013a0c75f19ca53255c03d00d81416e57f59c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/NLC289300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06527f1d803e80670963a18e65bc82aa1535c55047ded7cdf226c80b5917b98c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:09:48Z), 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/NLC289300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457993242c010374f9f14f89d9f59df4fdc9c81bf017d4182a8884650f2eae40. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLC289600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457993242c010374f9f14f89d9f59df4fdc9c81bf017d4182a8884650f2eae40. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLC289600083.
Ik Wil Ook Zo'n Broek Met Van Die Zakken Aan De Zijkant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecef595e9afd8dcc231a3f96b67f89aed9016054a477dbb26c2cc591ed910502. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:26:00Z), 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/NLC280000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecef595e9afd8dcc231a3f96b67f89aed9016054a477dbb26c2cc591ed910502. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NLC280000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8837aa2dc6a2c0a806cd2b0040f0475fef8736c6d05570212a7e33bdf5fc52bf. 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/NLC280200027.
Hebben We Nou Verkering Of Hoe Zit Dat Nou ?
Ik Wil Ook Zo'n Broek Met Van Die Zakken Aan De Zijkant - DJ Maurice Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c92711b89f6ddb9ab914a506a55d43f219aab793b415ad1e4c89ea3392d8769. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLE871324502.
Stokpaardje (In Galop) (DJ Maurice Remix)
(Ik Wil Met Jou Een) Selfie - Radio Versie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46d2da8f5220653fd73bc3212504303b8b8a02a245e08de36e4c1735503ea4e. 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/NLE871538301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc6204af539b2acb03525ca6f8c52c74e3a28333c354be3acd6dffa2972e2d2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:19Z), 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/NLE871723601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a8404671cf82c46ec172adab76978ad54dccd7acb8d503ba9b867ffde2e2d2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLE871729301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdda3c660d73e40c8aa423075cd815f3bf971352e6b6551a7f80ed0f7a6027fa. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/NLE871911100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821a257f5bb0e61fb653a0e535abf71b232465eb0f17465b86df18f46ec2188c. 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/NLE872202401.
Het Vrachtwagenchauffeurslied (Max Hardstyle Remix)
Het Vrachtwagenchauffeurslied - Max Hardstyle Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580ecd4e2eda5de4eaa1a28eaa144bffb086d36a56507881c2d8290870990e1a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLE872209201.
Waar Is M'n Tosti-Apparaat? (Zany Remix)
Waar Is M'n Tosti-Apparaat - Zany Remix DJ Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25320bbcf8045eda8551be2005d2da96b62144e49a85cc6abda60730dc40ea6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:49:59Z), 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/NLE872226602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd63796b64cb151e1f8a062292da2c1532be1908bbdb6cd98dc230ce8aac45e5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NLE872418301.