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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371cce1c6ec20939f07342eb1c4dd4af14deac3132eddfa299c681438d6e250d. 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/fb507796-c09f-4935-ada6-07fda2e24a13.json and https://artists.proofprofile.net/proofs/artist/fb507796-c09f-4935-ada6-07fda2e24a13.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a2390961e9026202c344b55786b42c65e4228fedeef0e53d2d61efafb18ba8. 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/DKJG52301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d06da41104e7889c214913fd4c5397288581f8a8d2984e0bdd468a9d007efb. 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/DKJG52301004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95fbe347987bd451536fbe7eac008d28d88814ad4ee795b15671f767bdb7272. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DKJG52301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ea21e14cca3ec604773aee696e0653dbe327d2f600faf64f251cc743a5d8c6. 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/DKJG51600901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d07636433fe732d734353fc2f87c8f5f591f64b27bb717a47bc3501c280708. 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/DKJG51600902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac652ad729c0b3ccce027dad1fe3e4aa18deb6ab7c786df3f18aeca4cb97dd7. 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/DKJG51600908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb273aa1d59b6f011c6702ecc3c8de912169242cac675540f0eefcda1beea43f. 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/QMFMG2343272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766a91be8587f45cad31803bd146b127652bc2672645428325aff43d197c30a9. 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/QM6MZ2207992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dff6c402719bf0d505454aa25cd8336cdf4b3e706655f52762e573f22e7c15d. 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/QMFME2180866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4252433b1dda08c4f4e7fcf5bd08d8d018745da0fde64ed4b280b837513ee82. 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/DKSF11500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4023e67d09815643d2504deb818f53f5e402b431ad3c94ab8853f51eb28f1435. 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/DKSF11500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40dcba02f3b92253cd5b945e024ffc7716416146bf74932246f0831a7bb4968. 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/DKSF11400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb549186fa953b52c080677d7a30711f924185f22e92ec840260a778d67c252c2. 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/DKSF11600104.
Falder Ikk' for Dig/Alt Før Men Er Ligegyldigt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02aefad483ec7540d970ddd39c2c784f74edb10bff063df1cedf45605bf910c. 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/DK92A1402403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2543023c62ccab9c2753feef3be111abf730b2ae4d5ac6409a9b314e9a466a. 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/DK92A1402404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2dfdf2c233b9ed0c25adbbb8ed8b823e4835b24cadeece32c20683758e1b26. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DK92A1402405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c2436c0aa882b7bcdbdc62ac3522e13eb9d76e3c8b26a2a67e248dd7997ce4. 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/DK92A1402417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f16b3804a4b392e117cc0e9eb96bb33edab31526fb867cb4be48d67c8d5966. 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/DK5U42402301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45d71b47c18ced6a73791d7b27c16a90d5d0c30cb2c29e12a8b17e0c632a742. 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/DKP162500401.