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 0xf4450d3bf1e3d5c1fcb5a74c40ec91b05c11b82df34bedd1945e2b84bb1999be. 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/12b62c86-3c61-4659-8ed6-95d77cb21197.json and https://artists.proofprofile.net/proofs/artist/12b62c86-3c61-4659-8ed6-95d77cb21197.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blaue Nächte von Hawaii / Ich komme wieder
Ben Je Vergeten? / Je Hebt Me Vandaag Nog Niet Gekust
De Purperen Hei / Het Havenlied Van Barcelona
Oh Darling - Kiss You Te Pletter (Remastered)
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 0x6b1961a71af8f0ea3916edc91db7e0c3d8ca2cc2a029c42d3f52cc5d409de3d4. 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/NLAX70928057.
De Regenboog Serie: De Grootste Hits - Theo Diepenbrock, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86bb432bac3fc277314264a98ad982cc94bc8a6d867d5bb77d6cc1d4bdb8609. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/NLA340601176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f9f8bd929f894c2669ff7fa653e4eb00d839c2d1fb8b592a1d89d5feb715b1. 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/NLA349700526.
De Gouden Jaren van Telstar: Theo Diepenbrock, Deel 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef33c68a7440c7b197eb78d47b44a1b1e91b5fd2da300e6d61dd756e338c60a8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLA340500456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9238d28dc82f88a38206ecb5d220ed1ca32f6633902fff2abd45c884c75c35e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLA349600008.
16 Telstar Favorieten uit de Tijd van Toen, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc508f16aae89010b9e848bc9168440eb861608e2bdf7a58787d2ca43cb92ee4. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/NLA340601159.
De Regenboog Serie: De Grootste Hits - De Vergeten Piraten Hits, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9238d28dc82f88a38206ecb5d220ed1ca32f6633902fff2abd45c884c75c35e. 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/NLA349600008.
16 Telstar Favorieten uit de Tijd van Toen, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227c484b49b2713aceeb69d30192bd0e6de0484eed2ac911b3f7b225826771bf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLA349500147.
16 Telstar Favorieten uit de Tijd van Toen, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367637113383412e0fa4d89ece42ffdc3b19b84c68973555fba953e0b2744ee5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLA349500029.
16 Telstar Favorieten uit de Tijd van Toen, Vol. 14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4933b510711ef5966dc3df859a276d434b7eb843e4b2497b2f7e0f0f713863b2. 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/NLA349700102.
16 Telstar Favorieten uit de Tijd van Toen, Vol. 8
16 Telstar Favorieten uit de Tijd van Toen, Vol. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19fc8438bab5dcdd50a91aa32ef246fc75a929c39623b7eac19b00ea488405b. 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/NLA349600244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c526b6a35eccd4ec0132b8f28055220b1e86cb7b92b5278e2d32e1aaf61d74e. 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/NLA241800394.