Dark Thoughts may refer to: "Dark Thoughts" (Lil Tecca song), 2025 "Dark Thoughts" (The Funeral Portrait song), 2023 Dark Thoughts, an album by Skylar Grey, and the title track
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 0x6eaaef27513ec66c55b4de89a3e2254ab7fb9ae7641b80633d71a1e5250dc178. 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/f7ef3dd6-6164-4e1f-bea9-66967b66e0f6.json and https://artists.proofprofile.net/proofs/artist/f7ef3dd6-6164-4e1f-bea9-66967b66e0f6.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 0x5d421b0f255d285c4a3d8ecd6a103627fc154dc2449bfdba920fb5e59ede2670. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QM2PV1778604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c6f6e4c5df1d01b521dddf088789320b033b30e71d19b9f324374be990c26c. 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/QZNWQ2200719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf519b9cfeac79af5e3556e33088c02f7612f1c61fbc74d6de36e2f2ec30268b2. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWQ2200720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1446a6294c08d3d909270eec290d46b6feb255ddbdf1918771a4227430733145. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZNWQ2200721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e83b6bcfca728699d13f2e31542a77806aa87939808ee7af3d6d61852897de. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZNWQ2200722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed29721b2a7da3cc00895cf0059e3d388117e0259c85bb2c073471e68ba4bc6b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWQ2200723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c13d61f0e6eb10bf5d26d2fa59aaa47f920982ee19b0845bed3efda2c9662db. 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/QZNWQ2200724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48b216e08eae020e23e7f32ce299c3b379705509a57e8891804e7b1e17f61a9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWQ2200729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681ac89a5f531fd07ac6863f2b76c363da9a14d2186a7289be6a9b059c5714e9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWQ2203580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30878b678aa08abec95a85ca8a60a1c4a03b53e217859468c6e4c0e49249c8b1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNWQ2203581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe980423fd038670c282d9d96b1875b461277526d589c89dc73bfd68098fbc230. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWQ2203582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc196f6ed95475bef4c4b2d8552cc4a2a5a7ffacb116790238612fac65cd861. 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/QZNWQ2203583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad410cc43193a530c8713c602a7503a912d15619786479261815756014df5cd8. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZNWQ2203584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0910bb76f7f05477ce6b7db5bce2e5a2e4104512d02ca80bd767222b1439e1a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZNWQ2203586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218b83245e8cdd0185f4842bc660faba9cac3ead1be337ed871d911c09505cff. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZNWQ2203591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8417145b3c42f054b69939be12db5e4a042a7e603a2392a6dd55eb1753e6d36. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/USHM22031937.