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 0x84985f4b4f0eeed431d19721eb2e860fd736f96b083577d4ed6c16f9b1245929. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed8e7249-dc8b-462b-a0c6-8e8781358668.json and https://artists.proofprofile.net/proofs/artist/ed8e7249-dc8b-462b-a0c6-8e8781358668.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 0xa1d4c4df5ddc90c636eb3e5fa827208bfea436f5b420b9ac7ea40744f494ed29. 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/DEH742156798.
Espectrum II: The Avantroots Dub Techno Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7353e4d0d827463066d844a8b494fafece4347c7746e1ade831ba91ff04b21b1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US83Z2111189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ef999ae6e62ae038e5254b92359f312a9545b57b32208d6c514b7afd16fc25. 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/US83Z2111190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daeb895d4cd443686797f9648f46d660d3eaa76d66de6127c23bf6d52a538d0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US83Z2111191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece0c3c0a5a2b74d78e49e461c0a058af4e1ceff2ab747f36c9e5caf47dc0372. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/US83Z2111192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d3a00d0962f2c6f63b1f49fe6df9ebd42e93e09cdf073e9f14136252c1b544. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z2111194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587c6092055bc7cb93065354857c3f8fad0fd8601063b470065930ad412dc4a0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2111195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6267df25444a84b80ef45a45fbf820e02884e6ae3d8bbde43eea85b9ff21aa. 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/US83Z2111200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8126475cda63d90148d0ebf45a5377d3e722db53957a2adb77169e3446f2245. 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/US83Z2111204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250bc941118eedb11282f4e21c8bb3ff2e5ac3750a76f73b0a2789b10b2302ca. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2229238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1db31de45e7ec31196d7e5fdb13cabdd5f775160e6506ec23408cf424af9564. 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/LTE232300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e4d2eaa103a097ab27016f5373172fce0ee2e3f70b8ad609f75c4e47ff990e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LTE232300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45770b9f4c417dbd078dc5fe0efc0a9c0ec22a05eb470f264b820c2571b0f73. 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/LTE232300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fb6d290397217e416d837092f35770bb0b51e7e6494d885236fdd4a231388a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/LTE232200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81571311610d128e3db001a942729272a7a3983d17c7cfaaaec3140fb4d2c726. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/LTE232100057.
Marihuana Vs. Alcohol - Riko Forinson , 4QM Tech Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a15d7cd1bf0406d7e252cf838c9d5ef7bfcb437db21c9f7d5a5b1c9fe212dd4. 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/DEH741801450.
Cubek - Amsterdam Dance Event 2014 (Part 2)