Uru or URU may refer to: Language Uru dialect of Central Kilimanjaro, a Bantu language of Tanzania Uru language, the extinct language of the Uros, an Amerindian people Urumi language, an extinct
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 0x351466fb1fcff954e2fc11de2168091ce0d83ffe130cd277b52b9eb2650c4610. 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/4e76b7a8-7747-42b0-a035-fd3650938012.json and https://artists.proofprofile.net/proofs/artist/4e76b7a8-7747-42b0-a035-fd3650938012.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 0x093fdd3778f30a511b29dd7a9fbdbe5e099fef8a512bc91691101539fb788e68. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPU901803358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43894a42240bf19bc9a3203926a8d7d49388a3d6ce5537ac51ecb9c47dfd2d54. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPU902000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093fdd3778f30a511b29dd7a9fbdbe5e099fef8a512bc91691101539fb788e68. 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/JPU901803358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43894a42240bf19bc9a3203926a8d7d49388a3d6ce5537ac51ecb9c47dfd2d54. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPU902000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d20f3f0e6a8f1c8c23ed2a1452464412ddb870d469ec38f1f04728e099878ed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPU902000247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd8e7689cef0168cd5b062b3db3852d717eda90d7518eb70c9844f6facfd4d2. Chain 2 (Bitcoin): anchored in block 957684 (2026-07-12T09:22:41Z), 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/JPU902003616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc86ab23078203f82773be0c898714a93903d251241f2c7213e6e29e7db1a3bd. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:04:23Z), 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/JPU902205213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c263744f24bc473f193fc205c88f1200d6696f5b90f84da73d3dbad6e5cdca0. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPU902205214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a1bfec379099b70a5ff9687adb88a875b839a3109928565a0068ebe4f02067. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/JPU902003613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271ac091663f05bcd1e06161a32703ab19bed4cfdf57e5d37c4626d007cb037d. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/JPU902002250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438fd538af16b2b24c7a9910c6b5b80c864969011d101d3835b38cf2b9fd492d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/JPU902300460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329ae48f4054632727a88ea867427df51a9db7f40de4d5a611dd91150f92bd7a. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:07:12Z), 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/JPU902304443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59169eb76456564b40301b1bb4385b5728118596a93d456d312e9024efaef466. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPU901902043.
BEST OF VOCAL WORKS [nZk] 2 -Side SawanoHiroyuki[nZk]-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e93380e46a8db9aba1648d8680727533244b737a12ca93e8c3ad4a36bbcbdfe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPU902000966.