1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb1848f617a0a37176eb1812b901c0d42b35176940b950429345dc810e9bd348f. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67de7c6b-7dcb-41fd-95de-ae191fb19e28.json and https://artists.proofprofile.net/proofs/artist/67de7c6b-7dcb-41fd-95de-ae191fb19e28.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 → block OTSBitcoinBlock must exist at that height 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 0xc91fa6c1ac69a1670a34491c6a3968dd1c2701649368b93d8d82bc69d30f26a0. 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/DEAT71106285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616e6419a16ea6d2f04daf53b05864103206f3bc870cf60b497e4c2d5624fd80. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEAT71106288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f45e251947a78d99e18d8de8a59fe0f08a4d8f259f21fcf388d554c5b72ec2. 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/DEAT71106290.
Das Heeresmusikkorps 9 der 1. Luftlandedivision
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ce27d0302f3bb550f3121b0f565502e93b690e5d058c358cf522e1f3761fbc. 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/DEAT71106049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65f5ee169bf33c89c4788bcd23a8543e1b4548dafbe615e01b05ac511bf765b. 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/DEAT71106050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59491df61578e9aa68aceb6a627602eaf46c3e50df1b58dadb239bd8e479a34c. 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/DEAT71106051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b1d536d1ed70bb7a236a383a293c2602fd4f53927cf44ea2072da34d2b9891. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEAT71106052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf4f198c7efbf9adb826f7ef0bab623973077db84fd304041f737f32668af9d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEAT71106053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c3378c4f16b4962a049dd1cc2b8f22f5958eab55ad5a596a252c1edd926049. 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/DEAT71106054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171a28a781c2bce562f9d79052872bad205e094d3e8c76e27338ffb65c3c43b5. 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/DEAT71106055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98d4cafcb58469e697700c9c4057fc9f291270a924e0e9b53981a3321c31a16. 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/DEAT71106056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79db9182642d298357a85bd06b7c3d11486059ac02bcfd68e0200229893bee19. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEAT71106057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2fc52f2edb79058fe23f530228fc5a10508d3b34b48a8960cb6424f39e4d94. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEAT71106294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafd709c530368237f39df15bea6ab50fa46d10587b26813fb2cf3dc8780dfe0. 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/DEAT71106295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0442a61eb7debb961bd867ea81aae0afa49ed055a486b0aef2a9e07a2e3f78b8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEAT71106299.
Behüt' dich Gott - Der Trompeter von Säckingen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7dc19ea6bf9eb8a88cccefd4987ca726f92ae75ce9369736eb50cb7e8f9309. 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/DEAT71106296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b62bd9b6eb37a3c325cf89d839f1f06e725d8597f8be97c5f16aeff8660ee54. 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/DEAT71106297.