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 0x8ff053c2a5c6d085cd7e617e01edc0d02ee0a5f00799758726c5636cc5c84917. 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/198cb9f4-9872-43fe-b78e-8a52b1fd0701.json and https://artists.proofprofile.net/proofs/artist/198cb9f4-9872-43fe-b78e-8a52b1fd0701.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 0x9f65e8f161c781656677d8668611ffb6d5e0c3073dc2a6780f8c96e92c6f876a. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/GBENT1435502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0541f2948b91e32a06c3b7731e8aec69e5545448b803d959b761b2ce3c4d76a0. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/UK7JF1400033.
Experiments For An Unknown Science Fiction
Experiments for an Unknown Science Fiction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b1a3643aa6df6db7126b9503557ca1387922ebf0404edc7a3d649599eb9ef4. 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/UK7JF1400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfec9c9b27d40162c0b455007b2a12456ffcc1d2f4617205ca743e5211745839. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/UK7JF1400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d6bed1f24ddba685b5e642fe2e26e6a355abcba55d5691b4134449cd6a1826. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/UK7JF1400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9170852ce4a8cd62d9247c4fc9e5c826c601b86d1b2042b62043576c9b2e4a37. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UK7JF1400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb780ca550d9a70a034562c103fb3e7e4f8a7b86929fd8aa80d329c7b9e12939. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/UK7JF1400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6c53d0fd0774f71b3688ae3f8246e13713b99ca6496cac175c76c124634525. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UK7JF1400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a593275ded0fbfcedbad1465de3e9aa72bd14f7b87c94790d002f815835a132. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBEWA2103348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc124f39063a4b7b21e72dd76908d4acd261c911220ed54baff202f4bc3373493. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBEWA2403391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4426261e009f92edf460053a9dccc9520bfa4f3ae55c7154c34d1706cf8ec8ed. 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/GBSCL2195025.
Espectrum: The Avantroots Dub Techno Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f65601b625a1c112e2600b14061ed9f60326241225897a54728073ce15a9cb. 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/US83Z1656113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44377d0d53c16400b7dce8b007f8042dc9416c99d4b19ede623abad6eb2779ba. 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/PLE352300010.
Espectrum II: The Avantroots Dub Techno Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6267df25444a84b80ef45a45fbf820e02884e6ae3d8bbde43eea85b9ff21aa. 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/US83Z2111200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10520efebb2ba650e9f872e00a862dda37b8d706c8bc3fec5cdc29d6c6555e8c. 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/GBCJY1800042.
Neu Kobenhavn (Hernan Cattaneo & Audio Junkies Remix) [Mixed]
Balance presents The Soundgarden (Mixed Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7641e832eb072ecd354d150c152d7f2a2b8235e9785ff92ae21087b49a2cb04d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AUXN21934290.