Daniel Raphael Rossen (born August 5, 1982) is an American singer, songwriter and multi-instrumentalist. He is best known as the guitarist and co-lead vocalist of the indie rock band Grizzly Bear, wit
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7334e7a546b34cfcf7e4343859cbf3d6c94dee8975b3a98738e571731ada35. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a34e09b1-06e1-4e4e-9657-8da30e2b5732.json and https://artists.proofprofile.net/proofs/artist/a34e09b1-06e1-4e4e-9657-8da30e2b5732.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a70c2cb5345800f85182827a6cfd77dd1d43084bbf7026812ed909288392e53. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/GBBPW1100280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d940e0012d38ac25423ac6c90ae6366001234313c45eb4954e912230f6520d. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:01:16Z), 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/GBBPW1100282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2619652c96d6b0a5a1d03ef08fbcf81704604dce9afd625144ff49ab9899b9df. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBBPW1100283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166eab422229f9a43c9aa7275effa3261cb71583d1421801d41829ac97c0b7d2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:35:56Z), 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/GBBPW1800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4635867b1c9483f7bbc0f152d89c23a9d3fc064e9e3bfc3e3f9fd45846d6eb10. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/GBBPW2100186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a187a69e8fb4a1e27ee1824b0e60f2472448b7850e598801cf973308324a03. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBBPW2100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6032d22e5d8e23c63501e882986357a36f0b7984ced68ee3e6ebc8a22b54f6e6. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/GBBPW2100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5646712aed78051e54e33887283dc8c402afb73ad4870bcd5bc263141803d11. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBBPW2100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5b3d3455ad4543f26b35b3dc9e6962e5494a66f26bd46aa2a2132f328d431b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:53:54Z), 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/GBBPW2100191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf317ec624809643b0acc4480c4173fcb17ed479297f3a4cc56efae02fb47f981. 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/GBAFL1600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52904980dd798451037550954c51c3e032c2e5b0e64aea91c13961457feaf93a. 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/GBAFL1600057.