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 0xf4ee0d84c0de5e9daa1fab1dcc695349117a3951709fff2edd5e2ab55895564d. 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/5044a2c3-0022-4e74-9db9-74b9d33439ad.json and https://artists.proofprofile.net/proofs/artist/5044a2c3-0022-4e74-9db9-74b9d33439ad.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 0x253b03ae4448c0a9360f28427cdf7f12e1f14f8029c3603165815f637f32946f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ATEW52000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796c1e907f198c710ad5ed46dbc0e23b9f971ab6ba5ec49fcd5a115ff26f5cb0. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ATEW52000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864f5826514a74a0eb0bc7456d85bf3c4db64a02b29442594f3f8dade02d13a6. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/ATEW52000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef5f133c52b667cb705943c59c0d206c4a7cb0e65046eff2acc123ba03eb0c1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ATEW52000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1dbb71852ca0b968553e5de3c6cac656eb910de2fc1dea9a8eb66bbd488ede. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ATEW52000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73371083fdfb6a0d0448a5c667a8af227ae9f95b8d36680ecc11d4c444b6854e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ATEW52000112.
In der Schleifmühlgasse (Funkhaus Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0276d744aa8ffb58abc5e25965b7c69ba51b1b3535759877c9868b6440383fb. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/ATEW52402106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cf082f4486566ca0de3ce9c37a03a76767b005ebd011a9430977c56e9b77ab. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ATEW52402108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001020afe5666cbe6fd21fdf9eab5983ed4c1637a91186dbe35f6ff8ed22a28c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ATEW52402102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cc5e363c1cc2e9df10ba9919454eccd0751c59de7a19ded0aaa27092521b53. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/ATEW52402103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd4d4c74f08cb762a3367e95368180278989be419373142b3de208cba71a243. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ATEW52402107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf3e86c29013ea284df0c14e38e99a937a1b535e2dfe4c346bd7c21dcc8d5d1. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ATEW52402110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36a796fab1b90cbbb1251e55423c5c6ec37a515853f04814a96d5d9fe09a47e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ATEW52402112.
Egerländer Trompetensterne (Live vom Blechlawine Festival)
Die Fidelen 60er (Live aus Deutschkreutz)
Amselpolka - Live vom Blechlawine Festival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b412b6461a5779513b33879185c6765d34abca63de8394d807d44ed3948f10c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ATEW52502907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a50a39ebb5d889e46687459ef42c9f9d9c3a05af35a95661f7df2318d05b555. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ATEW52502911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7168ea3ae16d72819498a480a4834f5394430797d8de241c5312bd3452219059. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATEW52402313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61158f6dc133e41a112b4af164a906becd9a000929d813924fd155e1a0357e3. 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/ATEW52301606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81acd2621473f9daeac991418098598360d3df02f92081dbcd2564b460d8401d. 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/ATEW52301607.