Dana may refer to: Businesses and organisations Dana (company), a Slovenian beverage company DANA (payment service), in Indonesia Dana Air, a Nigerian airline Dana College, formerly in Nebraska
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 0xd9909169163eee51f86a4740a2bcdfd492f710b07094b9438e531388d302e5ae. 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/5dbb890a-6ca6-49e9-baaf-40e3b6cfabac.json and https://artists.proofprofile.net/proofs/artist/5dbb890a-6ca6-49e9-baaf-40e3b6cfabac.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 0xcff5160646291f1f99551b37f775e6415b2f24cc1dd16efe841219d3bb08c41c. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/CH4102006902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2dd4e4954432887dc397d2b9bc8721f14446abb554c224eefcff33d3d5b876. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CH4102006905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124ff76c0e0b2ab869c72a8bef0668c55fb401a64c356613c9bab926dc5d47fd. 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/CH4102006901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b57adce772ef522bb3b7a5d16629c7c47f0ee374785f27a4da537310ee91831. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/CH4102006910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf732225577fd92702e7a914b3ba709f5ecee5c74a2c91d7542bfd3b6e37573a5. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/CH4102006911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e72c70538817be6336871242eda15bbd529b281e9fc8adae70d5694dae0619. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/CH4102006914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cb1cec0b47077ce6a553a0adb5b9b4f232f0aae6480c1025cc6e55e6611dfa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH4102006917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d516d5c8224445e0b229bab7ff9de77426cde49b35dbed67b5dbd730a7ded61. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CH4102006918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b57adce772ef522bb3b7a5d16629c7c47f0ee374785f27a4da537310ee91831. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CH4102006910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460302f42fd96b3c607f9e9f2b3632624d36b1748201d8b1625c638b102f183c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CH4102006919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4616797210a7f8345b79a741b972fa757d25fefb7140974f63aaea3ee97fe97a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/CH4102006921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73cb8f38efb541243a95ad0163711e04f5b0a68a29845e1e74049ff3a68bab8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH4062401738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73cb8f38efb541243a95ad0163711e04f5b0a68a29845e1e74049ff3a68bab8. 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/CH4062401738.