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 0x8547fd1bd47f6b757917fa5e19dc76ce5cc11df6d71c651d5dbf77eb6bdc0c42. 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/7b164ff2-3c39-47a7-98ff-23a3cac63c1b.json and https://artists.proofprofile.net/proofs/artist/7b164ff2-3c39-47a7-98ff-23a3cac63c1b.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 0x63e7512589f861deaa65254997806c8eca925eafdc2d36f29b4dbd5996af3236. 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/CAIXG2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41a547daf899e7838412a23fdf09c542c7f24e6d8b10a2271b7e33106fd7b0b. 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/CAIXG2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1e401d0652a515c3a578c5aba503a8b9f6597a1416979319af64f1d44f878c. 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/CAIXG2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bb4c4aa2173af561c4c4ba0de5c6d0cc384e1a97092475f943c290a83efe25. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/CAIXG2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464596c69330fdc7173165077bfa43f754a674830ce7660e3961e22e61e24bbb. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/CAIXG2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb73e3d02ce722a3c667d3cca52d6aa5d702591c7b3485395a93b3f7cafd89f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/CAIXG2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1a22e3130cb179f13fb340c02c2de7493db651ce6b3b9b34def4b51b9d63a7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/CAIXG2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f70f91b7f9948b51ed8855bdc50036b477ad0c1bd4c65d21acc5fe6738ef233. 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/CAIXG2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55ba9dd2b3a31954899110ab25b7a81f181f41725d685861113d2efaf0f734e. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CAIXG2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c31b6f8fd0e3c422e773d06b6781143be77a6e30f21f548aaafa9e3bbcc69d. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/CAIXG2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4aeded99f45b03876b51505495c750a60dafbcd397b6d0da67b2de2bfe09d9. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/CAIXG2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edc5bf7e705b8d81cfe979de85bd5f5ad466752315ba1089c99077ef3dc975a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CAIXG2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae55c1e523f07354b7c9d0372fda31c57c8a67508329416042757590486a247. 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/DEPQ62000976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4a5944c1395bf44282d1c9e6b72c6d6f7d6a6e2cfe4b0b492db0c3c3d0444f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEPQ62001025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47147cb27bb0244625394a56aac0aff924c63ca18192a9eb1e0cd908cc35f335. 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/DEPQ62001026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3ef82df87fd1fcfbbdad9b379814799058b2efb83476b4dd4dcdc082695b35. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEPQ62101198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a810e73152fb283024c4bb97506f8adeb76dd860c91cf049ef3258f54095e04. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEPQ62001027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4a5944c1395bf44282d1c9e6b72c6d6f7d6a6e2cfe4b0b492db0c3c3d0444f. 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/DEPQ62001025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae55c1e523f07354b7c9d0372fda31c57c8a67508329416042757590486a247. 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/DEPQ62000976.
Alpine Grooves 14 Coolnest (Kristallhütte) (Dj Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cc78eff184ad2b3f8068eb41d511b889a0339a34afe4e918a890b10fccfafe. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEH742227364.