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 0x2f8c3d4944eafe66369bd65b196eb4e08eb5b9268ba29022b307d445b9689bd8. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22979cb2-767f-43bd-a12a-6984ceefb03a.json and https://artists.proofprofile.net/proofs/artist/22979cb2-767f-43bd-a12a-6984ceefb03a.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 0x89256028eb65a27dcb6476d8fdbf6c163da7e924d319faf0b211d8132d1db37c. 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/DEA810501242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b138c363398b6f6a2984a4fcef66647009431bf2868f468d4e84b659af5b088. 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/DEA810501244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4118959675f4f673130fee28d117b61ba9a3294766436a16caed570ec8516804. 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/DEA810501246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77406d78b69cf0723de21a46fdf64609202303bafacd4f6501985ef6ad4aa5c6. 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/DEA810501250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecfd4da0be3b079d305c9ba4d863696b780a7ebab7247679cb4cfd9243d100c. 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/DEA810501252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf018e3afa065f585f798c23f8f293de80f6f307ef9b57df12537dbce4ffd2109. 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/DEA810501261.
Kaisermühlenblues - Die Musik aus der legendären TV-Serie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e02c1b647f902633e8567c0d2f35bf6b4987cbad95fa25c40445092b9d8818. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/ATP139841407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d44d1c0a4f9dc09c64e577913ae5813d12ae7c5da4293c235f9ebf357c6cdd8. 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/ATF069400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5524e1980fa84dfbc5662c3c7f88b70ea226ca0b4cce0e6b1910b5d202063cf8. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/ATF069400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4d5dc901ca89fb8ec83f146dbc5c15d317da412f1c0e6527a70419ddc8301c. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ATF069400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4408d82cac9afafb6e70baafcd4cfd38a8d8f8ecce77ac8071c6d5c9cabfcdf6. 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/ATF069400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583505be488cf837857662b4218e790ef530a6643ce8620bb9c51a2f9c3c394e. 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/ATF069400350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848f7175e0118c2d91083e040df9311e239ac2f835cdfe43fe18bd75d6bed8c2. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ATF069400360.
2. Gespräch der Knechte, Fortsetzung - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a82a1381dc0222babf2c4678f3e611b633866949cd8beda92639d53f60b5f6. 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/ATF069400370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a16a01c7de279fcd3eb296b2b0222f1fdb3bfbc0e629db66e25d0f8a4a2378. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/ATF069400380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52abb856c2826a47434fb277e4a003b27559daabc182f1af030f29219b85915. 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/ATF069400400.