Spermbirds are a German punk band from Kaiserslautern. Formed in 1983, by the members of the melodic punk rock band Die Walter Elf (including an American G.I. stationed in Germany as vocalist), they c
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 0x0027b8d28666d8f503b733d32048b02378a418e55a4ea4962934ee993cc69636. 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/62d25520-10d4-4aef-b1ea-a22115a5ed04.json and https://artists.proofprofile.net/proofs/artist/62d25520-10d4-4aef-b1ea-a22115a5ed04.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 0xbe44ea388e8e78371a6e7db7c4174666bae82b3f1f286c5b6a3f7daf83b30d2e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEFS41902034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9662ad249e1e05bd55d12df5c17c0fdb3bc3e80c2d3bb3bc0e89f48e87752b70. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:17:12Z), 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/DEZ650607065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dfd5d704f5f36b51a724496c6104f8cfd47318dc4e9a739caa1998003a7310. 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/DEZ650607068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8095eb80c19be9529c8e643d1959d9fe606fa20f91b9f6ee49f7caf367b3176. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/DEZ650607069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eac60eb3872e355776a7ee2de36ec4bf3384af0f6e25195687583035be8632. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEZ650607070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac2de7d866f013cafd198a09b13a22b012db88d30d413f03e02a1bfba0ee242. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/DEZ650607074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc17070b257d688400eb42a9a575c881c74190b5b9b743c59e01ee7bebbd7546. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:50:53Z), 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/DEZ650607075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bca9087444adb4969608323542831535b8468a89a9bfbbfd35d0c14016317a. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DEZ650607078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0574a1594d78e3d8dca2aa4bd29564877f461cbac8d92d8dfb3f9817a1c72da. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:05:14Z), 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/DEZ650607017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b46ecca49cbb788d8143d583dfd1e4b92d1944a6167e2d6bef2e5545ffd6df2. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DEZ650607020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6d89ec7471ccb1e5040578e24ebd5a98994029af62d1c8570d414f2395f1e5. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/DEFS41901988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6d89ec7471ccb1e5040578e24ebd5a98994029af62d1c8570d414f2395f1e5. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/DEFS41901988.