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 0xd01e62ee007476e8606a93d8c3d784d1d6c2ebe7133ff44d88017700ad68e56f. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7d187a8-f1df-446a-a3fe-963ba319534c.json and https://artists.proofprofile.net/proofs/artist/d7d187a8-f1df-446a-a3fe-963ba319534c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
My Grandmotha [Mixed] - Farben´s Hidden Diskoharfen Mix
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 0xec16ba2caa5003b0968b0b19b46df3555016ad27f837942ec24b99efd22cc5fc. 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/DEU672200559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76578cb2f748fcdaac3660e40d736ef2f5455fac188c464afaf9fe3aa7ff6867. 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/DEU672200560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b13a25892481a6daaad9ef8c0d566b72ce35fce7e19a8ad5f96d0a134d9c57. 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/DEU672200563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6736e80b88a80e5cd653da846354f60dec7b5b0463392922affff8c41858ad4e. 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/DEU672200564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8232ccf9c14df6ac4c338818b874a58e472c3d1f61a3fb79be5b90f365b045c0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEU672200571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a5bb2110fec7f59d358ac24b80f651f365c8c69defc5f5690e8cfe4e95ee87. 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/DEU672200572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc10a253c3633087eef6b60376654469688980b18b77e1500ed71aaf4ee1c378. 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/DEU672200573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b3f756eccb2b846847ce9918a4b69ca8615ee174fcbd397e95d7f5e4918d35. 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/DEU672200577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15a1dd1cbd8375ca88e1da75bf8dfe738115b87a77451c86d356fcd59ea91e4. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/DEU672200561.
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 0xa7f7e8ebc0e96f9ba49480e2ac766be2b1e0f6fb910d41e80619ebc038f7197b. 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/DEU679900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93be875e9b64160902954be288cb1d16e2e0977aa2031cbb5f90164fb900053d. 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/DEU679900045.
Dial / Ladomat 2000 present - Hamburgeins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bb489f630769e5db231bee8a0ed0d9b45e512c58bda7a9f745ddcc92badd42. 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/DEE460600405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a38b58efc6fd89a66a404cd80a3760b375c631b835d95218743e0ffb763398c. 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/DEE460600412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e7a0c6eab275f3c8244ecb031f03a6d3e61f9fc37afca9500dff5ddaa7066a. 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/DEU679900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcfd1be60f45cf42b7497524962ee99f5f3db1f32b8319deec1a4a90cb3a18e. 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/DET720200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c0f5d81f84c32436f71ec5544d70e3909fdf9e9839c1613bf6d794021ab5a8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DET720200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6195d1761307bdc2849bbe74c9953b582f2c4361749d44cf8932ca68a829b8c7. 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/DEBT90800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb0d7526c026838ec551dae51bb95d754f8f736e788da15d1b28f84d8ef2894. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEBT90800056.
Poker Flat Volume Two (Live Turntable Mix by Martin Landsky)
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