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 0xb4078d47e7007db79f9809aff3f8bfa2aae3c7b9b847abd384e110fc8afb46f4. 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/812b0392-fe56-45be-b33a-4b1a2523527b.json and https://artists.proofprofile.net/proofs/artist/812b0392-fe56-45be-b33a-4b1a2523527b.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 0x3a86d4590a110246b178f3c8027e867bc0e9111d27a7464dac610699c73e6466. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/CACWV1985055.
Man Man Man, Dit Album Is Nog Smeriger Dan Man Man Man, Wanne Smerig Album
Man Man Man, Dit Album Is Nog Veel Smeriger Dan Man Man Man, Dit Album Is Nog Smeriger Dan Man Man Man, Wanne Smerig Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83dc3567a19029a390deaa6c013451b57b81fa56b98f4a149a2626a90e8949f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZDA62031569.
Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Jaaaaaa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a989e61ae4952ccc3e8465424ead86beadd4af91a145d1445b784ea20983ec. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZDA42158758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5892d68699513160b20fd4cde84854fd4bdedafed1183626c43741933accc185. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZMEM2168986.
Mooie Schone Muziek Voor Bij Je Schoonouders
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf134b089a215c8f909ee58d1758c376a670df916a07f7f862c03292fd6131c65. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZES82281556.
Op Bezoek Bij M'n Schoonouders, Neuk Ze In de Bek
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca7eb15f4e9f193ce915db641ec58d3a314f20b447c81d32961ee65e515187c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZRP52217469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53f69305d67bba585c70590d04b9e169fc097e9a6e71ef2f09a1c1828eab89e. 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/QZK6G2275021.
Naar de Dokter Voor een Onderzoek, Daar Gaat M'n Onderbroek
Naar de Dokter Voor een Onderzoek, Daar Gaat M'n Onderbroek (Sped Up)
Naar de Dokter Voor een Onderzoek, Daar Gaat M'n Onderbroek (Beuk Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55ad086d4a1a529016edb62d417d3345c7cb0d5383d016c7fefe3b269d26f00. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QZMEQ2380125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b78f26e5821816814e195b1ed908592e0bf0793bb2671023c4cc82f80c09844. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZFZ62433001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b78f26e5821816814e195b1ed908592e0bf0793bb2671023c4cc82f80c09844. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZFZ62433001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85052237df78376499a9d4d121014944c1b618ba2b264885f4d14aa8c0a08d8f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB22362847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbdfc22821e54855720b1c91ed2ac20de74fabef9b2b0f39711857a4fa45fea. 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/NL9ZN2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc571e50097881d78a72124c72438450a65fc4439271a6260b8ea67a2dc84536. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NL9ZN2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d7889a89d79c59f3f6362ac46b54faa611d991a4e46edd781d87f1bd4da375. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/NL9ZN2500001.
Ik Ben Stamhoofd Dus Ze Geeft Mijn Stam Hoofd
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc10c853d64175c5e1a5d122a35f7ade1d88a977e9b12f427ef6cea0c4d2259. 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/NL9ZN2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca360f66d483633be6a4d846bea3b93e5839e24ebc84eefa417e4b896b866e0e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/NL9ZN2500007.