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 0x747f22f7350fb2e48d65227a729b721b007a1168660dcfcf5ef16463f28c0d79. 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/2474490b-cd98-471f-89d0-9f6a915b047d.json and https://artists.proofprofile.net/proofs/artist/2474490b-cd98-471f-89d0-9f6a915b047d.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 0x8ffb43ddee57dd550b2aabd996616d3edeb1e3da49bc78e273c3656ab1563766. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE3D71602013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa7ad3286c6dfe4aef8ce8dac85c976cca3ff2f0fa19416088e64c53bc3aeda. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/SE3D71602012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8c4814a1d97f28f5b0f82e5ef7179cd3307933c74d20fcae132df8ac31c8b4. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SEYOK1400557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0826b6501a8de50767e2cc1b17312ba79f120f37e47aa636af300de40f23d5f7. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SEYOK1400558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0766676552b2e9d06064b0b7d27e1c989a7fbbaa8f42cf52f475ee5e2879f7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:09Z), 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/SE3D71700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf379c296e2f4b61b4e359d48557339e589cbd2c0f19d6e2000a535db4237beaf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE3D71700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e655984445cee877dede488c87b6558b2cbf0552915280e7e9ff5320fa41f8. 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/SEXCH2200309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2f41984f4ee5f76ffda04ad0a90c014a2bfd2e456d60d78f1d49446c5c7acd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SEXCH2200311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bca70f894c8def4e431fb1c3e72173d7730a079215244ca1af417a4ee287eba. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/SEXCH2200312.
Digital Greetings From Nielsen Søund (Live)
That It Is Already Too Late To Leave - Live At Nielsen Søund 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c62effc8a0679515ec71450505a9df48d44c66cdeffb56cf3ac644547835612. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SEXCH2200314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10d0db4bcbf9d0bc5e63d8ef1c8a4a36dd09271c4a435d5e4e2fe2ac81a1ddd. 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/SEXCH2200315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d9839f459eafada337af7897e2a3a6ae1eb5fcbfad43d40b20e2fa2ea2f4a2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:27:28Z), 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/SEXCH2200317.
Valiant Visions Dawn - Live At Nielsen Søund 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e18e59f15bbaed6612b8cc64a05a201bb2221e07bf9f50fd9e3c761dc18440. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SEXCH2200318.
Metropolis Flow - Live At Nielsen Søund 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f80cb5342e15a0516139ad23c7d8646ce4f00b363cde0d6b63535d431cb104a. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/SEXCH2200319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca5d585ea26388b5f90264c556613db81a20709f56185f457fb6b2442ea569a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEXCH2200320.
Sleepy Eye June - Live At Nielsen Søund 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab78cc6b1dbfcae2570a5aae9346d40470fb4f8f761c0915f45070167eb1c82. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEXCH2200323.