Ultar (also Ultar Sar , Ultar II, Bojohagur Duanasir II) is the southeasternmost major peak of the Batura Muztagh, a subrange of the Karakoram range. It lies about northeast of Karimabad, a town on t
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 0x61d4795878722389ae104ed2563aeae91f9bbca5ce6131ae771ca215c06678d0. 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/b59b8ff1-f14d-4738-82c1-d63d99abfd8b.json and https://artists.proofprofile.net/proofs/artist/b59b8ff1-f14d-4738-82c1-d63d99abfd8b.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 0x9fb6865ffc78ed63fcac9ee500495a9e0bd02e79445be2fc29175806840e61c7. 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/DEVF41600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156fdb05c4e150ef115ff3f0418a9ca127588b4a08f4ccd904ed811d1e93104d. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/DEVF41600088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d05ebbb977a7e66a4a9c7c551c0c50c042397308a8c0c472fa0a658c69d0f4. 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/DEVF41600091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8865cbd11a043fd6df819db0f14cc42ad7b2426bfbda0181e32e3d28b5fce089. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR10S1955953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f990bf4116542d1df8700779c441ce2e58642cedc19856f2c96d85067dae6ff. 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/FR10S1955954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91197053b3a0846e4a2a81a33611c5e519457835cefb6a37d7b70b591fbcc21. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR10S1955955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb3e17b671374baafa6120e2d7608f1383b444f7a9748e93ce40d76c7a178b3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR10S1955957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91197053b3a0846e4a2a81a33611c5e519457835cefb6a37d7b70b591fbcc21. 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/FR10S1955955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e067c3a8db8f130394c6286a954d333287c97ef2ad15c8d69d810229c67bd31. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/FR10S1955958.
Midnight Walk and Reminiscences of Necromancy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec90ca513ed33ea42e5eeb113658d08fb842de52725df4c1c9fc64875cb16c1. 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/QZW9L2265224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b2f033e994e2bfc7d08e72f9e320d7d5ead3b21e1686effe09b6ab2752cd6b. 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/QZW9L2265225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9834c8f65c2c8d55b13fefd2bbc7514990b0c5407bf2aa50e0f2cffdaaba5d. 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/QZTVM2221798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cbe5c519780881004b7ac448eb434af05803c0f0c5e6293d19dbee8d53eea3. 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/QZW9L2265226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ca9c299181eab36386e396f6ad82d5e59e66257364d61c484c5f61398fbf45. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZW9L2265227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1aa4e6f976113dd346ce104f02800f73165b194a807a90156cf54a1cb28a6d. 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/QZW9K2275567.