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 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 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 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 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/US83Z2111190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daeb895d4cd443686797f9648f46d660d3eaa76d66de6127c23bf6d52a538d0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 0xb37110868138bf82c377dcb15e3353fb21b099c7a5ea0abe5c8b4a5e70e4afd9. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US83Z2111193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d3a00d0962f2c6f63b1f49fe6df9ebd42e93e09cdf073e9f14136252c1b544. 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/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 0xa97a047c09c8c60c3271bae9647ca9e6d24ac11330526f58a3d4f2527b10cab7. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US83Z2111196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f741553126bac77438bc7ff0b44e730d713adff08b185d926f6da748d3cad98. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US83Z2111197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccddab957a1f07a0194e74506d16e4e2c18798a67632c7f3f47c92238618b955. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/US83Z2111198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe145949cead7bebcc465f30ad6f1dd94a3734a9a8369e86ae7ca17e9299345ea. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/US83Z2111199.
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 0xd3f3864a4ed942fee4d8efc060c1de2b0da4f22f75bbe438488614c299132bb3. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US83Z2111201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf79d01f99732bc9c6138d6ba634cfa6a2966213f4e2630b95a89a0711536d0. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/US83Z2111202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf860f85eda6e280e9ee29c46cf8a3746e9c22b3ee55ef492fb59a177ad12c06d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US83Z2111203.
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 0x673c409217db0986a219ee7339d72354d2db674632f12bda9a1f84ff1af5a00e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/LTE232400003.
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 0x4fb61117520e67c1822de0ccb8f1cd087045496722edcf830caf1132189113a5. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBKQU2305125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c6d3a23adf81bb1131ed268341769a842c8fe5934c63c5634208fb84e3b6d3. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBKQU2305126.
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 0x7b01706030235e6516835131878aad581d6b8435ea4df9cea362304802203c28. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CH6541682958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf996b62c7dbd2f134b755b8e83142155da8a55c173adb57dd0ccf5c3175e0433. 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/CH6541682959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b31dfd777e5b5d5c6b94346a7ad9f429ed66aebfeae5c4e6d3913a60ddc041. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CH6541682961.
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 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/DEH741801450.
Cubek - Amsterdam Dance Event 2014 (Part 2)