Dava may refer to: Dava, a division of Hindu Akhara Dava (comics), a fictional martial artist appearing in comics published by DC Comics Dava Bazaar, an area in South Mumbai noted for producing medic
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 0xef5b53b7c9e573d45b5914cb8b0416692a2daa6084575c3b93b810c2ace59130. 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/81bddeca-e08a-4d3a-a5c9-de55aac0d00c.json and https://artists.proofprofile.net/proofs/artist/81bddeca-e08a-4d3a-a5c9-de55aac0d00c.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 0x57ca0accee41cfe3a96a00ad499e8a877b760269eadf76c30a3af333364670e0. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/RUA582102394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf534d9fd935807a131122f834d37a3bc5dcc5dffde9ec63c52caa1197a142ea7. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/RUA582102758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d6f2a55853573737dc32ba733c7180d6a00fbff0c11b4ea5e2d0a65b133870. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUA582103074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3ed2a9b48acbd34fe5180ee6278a6ea608f02ab8deb22d4a45e7f4fe26c899. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/RUA582103372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1154ab892ba1215904e3c7b41be50c4d5eae502e0d03a7308e2325f3e56dbd3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/RUA582103499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0721b34e4ec5d6c9367dbda6e285a2bec0b421d22fa517a82f69efd1a3d85e25. 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/RUA582103616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4793623ab54d6780efc0141664c973c49786fbb4236b729d3d4025223091cc69. 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/RUA582103779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f23654db918c773b9358f817616c3b41bd180381ffc657b09fa3e6a207c155. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUA582105723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954fb513d66ce604f5759643a42446c1164b1d5de10677d8e11bdfc1509f439c. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/RUA582101451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cbb739584612090649aa1de9b163e597d0c9acf816a5843e292884f90248ac. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/RUA582104065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d1a914c3b07e0463657b50a977b9355689bbd4d5cc1d01ddbca81a4cc64ce1. 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/RUA582104746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2611663e5d72dfe713c9b5f684efe51e8a1322f0d328d7989a97e627a0075a29. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/RUA582105547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e3e647bcc5bdc822ac3d0440213ae170d8a66886971c2156f8401a83a4bab2. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/RUA582106361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a542d41860d6be999d10b5cdbbda5957f9fea324a52f7035b1fd6c87e89eeb3. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/RUA582107789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25fab9aa195f9e360b48971b30499be138787d2c2f1b4b36b01196a7146bb33. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/RUB422200849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b364195a83fa7baee2e1bef2be41c6d89a020fddaf61b16356201eee4e67bc. 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/RUAGV2301944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b017052b2618918ca1d41f01a315869f4d9dfec896b9d87b5673ee843630a65. 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/RUAGV2302287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbee7e7f876ecb8501c48f2fd1231813c0b42bcbf93912e6733f079b5b1ca9c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUAGV2302462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1803e563454903ff1298024266ba668446a40e4a300bf95896bb584f218dac3. 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/FRS182038700.