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 0x7596cac60b78d083011f9d9a1d11cc3532d8b3d704ac41179b428745a6ad298d. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50145ea6-5b05-49da-9bd6-6dc8e6453789.json and https://artists.proofprofile.net/proofs/artist/50145ea6-5b05-49da-9bd6-6dc8e6453789.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aus alten und neuen Stimmbüchern - Folge 1
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 0x552085a1883a5d49d7d6a18217e4f42d28c062882acf7ad1df60a410532747b5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEA660300440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5e4458b05c377d64966db6d8d86cd4226eb9a382eacf4910d77e8ac9989197. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/DEA660300441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d984000fc780fbf505387deea0657c9bf783e4e51a4695d0ee22a11077f4a42. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEA660300442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6beefaff9ccd033c78ce55648357d09929283547fdac91378367e35908a6a29d. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/DEA660300443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebef15263a46c54807e1b0ee28337b91279bd267267de09857fdcaf7340bc1d2. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEA660300444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b1b4d943813716bb9d4d9c7804a0b70566dd9947db9ec32e3cf80aeba6a4f5. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEA660300445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c11998aaa5223a563a1ae6da20dff526ec7c41cc7ad83b0faf4b12ef71ae27. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEA660300446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121eab29f1300721ffb1fbc2dbd52d83dff2486a07e677854530563c6c17daa9. 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/DEA660300447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20608617cbc057c890c04c0dc28e5891a4fe228ea29a61d2da1a01b9a2038d2. 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/DEA660300575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde990d81c1745a8d5e12262421df121244f238663d929e24556b06fa9c6002cc. 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/DEA660300448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593964ae2ec658513220d5c7e8e61eb74e85deb86c0ae1bad9aeddddbdd143a5. 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/DEA660300449.
Goldene Klänge Der Heimat - Virtuose Akkordeon Musik - Accordeon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a4d0bdfa2c89cf0f1fd4a75c52137ff46ab57e474d3c37743baac88e8fc75e. 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/DEKD60801300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a68579b7bd1f3f0eb492b1bfa7ed6451fda5faf7071da15ef77c15b59d521a. 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/DEKD60801410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087602aec505ec6ded1db401b4719fe437487aea281a89942fdf925880bd1fe3. 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/DEA661100394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df0fdc2746697dce5f67a768a61bc9769443071ec5c853d1a2ad19a41826ff6. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/DEA661200226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6fe523d7882204f2867cf16133fe367a40be552a78d0812a4869554b277c99. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEA661200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd752361ae8e797ba6dbf0817ae7fdfc139fa8f27aab9f145bd26cd1d62e0ff0. 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/DEA661200229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767d455aa60c69e8ed869d70a4aef7400b8f55b5c0fc97de0c1d1b270c62edf1. 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/DEA661200228.