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 0x04aea79b956a4723cf99c37a3de14017071908e3ba534b2858439178c11f5233. 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/cc87101b-0fca-4d87-977e-ca5a5ea108f8.json and https://artists.proofprofile.net/proofs/artist/cc87101b-0fca-4d87-977e-ca5a5ea108f8.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 0x634cf5cae08854f6742a99ecb6cb300e1ff0a9d9ebd38f1edbaf220b36ba8b1c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NOAGJ2500004.
Drink About - Wolfgang Wee & Markus Neby Remix
Drink About (Wolfgang Wee & Markus Neby Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44075cb042ff550ff082e59eaa9679553b7c2d0673b79a1909de42ce2d612649. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB2DY2200555.
Cruel World - Wolfgang Wee & Markus Neby Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f0d44cfed1de17ebf3aaf56605a5f014a97d178ff04830a16d79da8c7b1541. 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/NOUM71800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63c10ef89f05ab54b84f4ba2389d6acf89bb26972eeb46f2d1efd5f80aa2485. 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/NOHLX2445010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771a135df46314bd5fa710f234f9e66259fecd4cd755a7cd717af2043ad50d57. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZK6Q1919607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44062e6fb576fceb4a65f4f95e4d9117b7613efd7078ec95d9268cde5138c6a5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR7JQ1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29b0e8aa4ec6cad39d2bb6d5c7644560927889910851e73424b2f49c7982b0a. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FR7JQ1900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65c6cac96e88e53f0fb2923ce33796ab2e7845dc88a7c02244d19f0d494c322. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR7JQ1900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf925f0da201a1a319217ff9c71165117b45cae52b4e352f33aed17a8e4d12e6. 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/TCAEA1841756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0de9e9cc3e16b1128b15bc6c584597b40ed8afeb09f3a4922e4f615b9178300. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAEA1841762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463cd1eb0d37dfe17a2d00186a96825e1dd9ee9013001a13987043930f33fc9f. 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/TCAEA1841836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb3217bfe343bdee84b4a4ca2032ace6c554d9a192ca29a04a1228f6a987df1. 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/NORD01701010.
From Californebu to Nordnes (Instrumental) [feat. Markus Neby]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91bb845320664099d53215f5db7076fe0f5ff97eb84bfc31b37103ad62c71df. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCACO1687521.
Cruel World (Wolfgang Wee & Markus Neby Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f0d44cfed1de17ebf3aaf56605a5f014a97d178ff04830a16d79da8c7b1541. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOUM71800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63c10ef89f05ab54b84f4ba2389d6acf89bb26972eeb46f2d1efd5f80aa2485. 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/NOHLX2445010.