Double Trouble may refer to: Geography Double Trouble State Park, New Jersey Film and TV Film Double Trouble (1915 film), a silent film starring Douglas Fairbanks, Sr Double Trouble (1927 film
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 0x9a0b10cef035f5260fc7c24faeec46847b4b3bc7578ae12ca05a16098c1303e6. 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/e1f18e33-07c6-449e-8ad5-cecd4d2dafde.json and https://artists.proofprofile.net/proofs/artist/e1f18e33-07c6-449e-8ad5-cecd4d2dafde.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 0xce82d8dc83f94c20b9490a68ab426f3017820d2476e2ca6f35ac3b3abf35e955. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLML68000311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a51f2caa3077ed3ff1e762cf794993c19af914ccbe908c8cc1f4660fb015556. 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/GBDLM2000285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb8d246aa707ee44bf7b40302a051bdb389643245a515f7d8aa3089d5214d9f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBDLM2000286.
Just Keep Rockin' - Sk'ouse Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe61e8349fbc0a0be0173252e3f0b500cbb12299006e7ee5687feb5a532c30a. 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/NLML68000281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82c89c4b5fe934ba9851bb53e5328741f2eb94bfc3319d7ddccad9f8fb77a09. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/NLML68000279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd34ec7dbe43c17b8f6f24bb22f6b26ae640e3993d6e727ae7f80a80db657543. 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/NLML68000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce3f88c7dcb3ba9b9c019f231f6855f384187417dba0b56dae20dade95b47dd. 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/GBDLM2000291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56d19ef75da0623e1a5bd381ba8ff5984b60a55898706d704d6fb43141d862e. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLML68000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faf479f6dbf16ecda36a3f6f039187d7658f4600c978951378c25f2b2714ea8. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLML68000308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e841b0f1b02cc2223e679eb6b189060696a2d019b661e985bb7385b30d352e. 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/NLML68000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce82d8dc83f94c20b9490a68ab426f3017820d2476e2ca6f35ac3b3abf35e955. 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/NLML68000311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c35b01a76bf7491dbd75eccb7b97ad02e43f5a6b073a292f1977f34ce7f570. 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/NLML68000312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f8be769be59a555edac8cd23d2fd031abc4ae933f735f752760ba9e4dd6645. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLML68000313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2af0073a34936212d6199c7cf96759785b03bddd88f36f5605618b84eada9e2. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NLML68000315.
House Classics III (Presented by Harley&muscle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9acff6901796ec11223dd6cbe7c962023cba905366a1919f14e89c73698adb4. 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/DEU231202171.