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 0xae6942be53dd3043d1e9fee7cec2a31f156f4c1640a1f9f7c01722744831db1a. 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/c7fffa12-071c-45b7-a35b-ab74f9e87f17.json and https://artists.proofprofile.net/proofs/artist/c7fffa12-071c-45b7-a35b-ab74f9e87f17.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 0x91e6c154f574b5e59fb5d90e66e3954b16d7a13936ced79798fc4579c9107ef0. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:16:59Z), 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/NLF290400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f5ece3bcd23887af1def1a2b04971fe1f1fdf410d0101b4f6fedc6769dabac. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLS241000361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafee9df663779b41394504a72e5b4a3443f851a1559fbd3843097c3372253be. 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/NLE871412001.
Tomatenplukkers (feat. DJ Jan) [party stamper version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee55100e87051fe5931658c53df7dc93a02e7881dcbbc9b80cdd6c13acb1bf46. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NLE879010008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085b61d0ab2004e8955d5474ec187314d91d2b6a7349f89539ebda53acb6d111. 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/NLE871440801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19d0651165bb0017ecfa0e58fb51c179818ab94a14b718abc57f2076af0939d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/NLE871540001.
Lam & Gelukkig (Paniek In De Tent Remix)
Follow The Leader (Summer Love Spanish Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa52b77a96740c39251a0357b387e5038a1735877977fd2c53dfc98a82f75319. 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/NL2QQ2000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddddac605c0c23c35343fc8d82989431c4c0478acc6f082510b96f9b719ebc70. 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/NLE871543601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd1ff09841c62acd295506c95c902994137bd6ce88db8b6524fdfdffeffc798. 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/NL7HA2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085b61d0ab2004e8955d5474ec187314d91d2b6a7349f89539ebda53acb6d111. 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/NLE871440801.
Feestknallers Top 50 (Grootste Party & Feesthits Aller Tijden)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f3de09764be4ffe7ee3e92768780cd7a6995814bfba80296faed78cf81f87b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLF290800451.
Good to Go 2005 (DJ Maurice vs. Flamman & Abraxas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe391cad7c11c225878c448ce65694556043e4af65a40884e709b02c0f09084b3. 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/NLC340502006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4266120a79c7792c8fd51200618c8364a36818c18d9a44d0a8bac6e5c428840c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLC340502007.