84 may refer to: 84 (number), the natural number following 83 and preceding 85 one of the years 84 BC, AD 84, 1984, 2084, 2184 The international calling code for Vietnam 84 Lumber, a building mat
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 0xc9d40ef4f43c8d787f2c5dde1922f0a507c719e73e4bda28daf77c1cdbc3e3ed. 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/fc8d7471-413b-44a8-aa6b-9d1c2fcbbee1.json and https://artists.proofprofile.net/proofs/artist/fc8d7471-413b-44a8-aa6b-9d1c2fcbbee1.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 0xded10e4c20326361f21dc7c0174ff8100a8206760946887037f2fd1df182e4af. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/RUAGT2468749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c96727dcd11242ff92dcfe482b03dd32fb83a010c04e7f92b8564e663c0124f. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/RUAGT2468750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405779a032e624903a8a3b9ed30a209c56ba3fffdf3e96f3fc81fc69a8792976. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/RUAGT2468751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798d115542f99e95d5344b8775f65215a3e32095f475912d14a4f61d8087bffb. 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/RUAGT2468754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98b0e7da684d1f3f08e594f359bb85b157121f3ddb78a02298b70795501078a. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/RUAGT2468755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf957fb58dfd6f950e96abeab5c0172e92dbd28544456302c0dc2f9ddef3c61b8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/RUAGT2468756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388798fa5e1079bbd36b834d279083f172ac76d4f59118794c1cdffd09932327. 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/RUAGT2468757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04b5ffbc21618ffbcca3967a59bf9fc452a7b566131f9d6e4fe064473192731. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUAGT2468758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea8d1087f8a6736973e2cf881cc6f795498ec668e888b283321c6d20534183b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SMRUS0072675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8959d6be8759c14cdc686bce272fd7e09903efaa9259f468c315018c5414c769. 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/SMRUS0073137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfa497a750667b50ace5bc541235b1a215ad422f993be03d82a7973b616b585. Chain 2 (Bitcoin): anchored in block 957895 (2026-07-13T18:41:29Z), 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/SMRUS0074906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf65395f4cbac88210653abc63216d682f6362a76a186a4daf27e78216cc4cb. 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/SMRUS0075126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493ad99f16a0b4d648d571327c1400e5de3762a5a16183b0bde92611616f847b. 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/SMRUS0076373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee76c5d7d4569e8fd2a3aa36547ae57630e8c3ee9707782b06570d999b69a083. 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/RUAGT2359686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f6182b57cae9929c14227ee57d80bc79d8b55e075a39fdea67813aa9380e05. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/RUAGT2359688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xface54584370be75d05a306b5e1b2d053e0040a5150336fa23b95600a872e148. 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/RUAGT2359689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e25846b25221105fcc5b53a9e2911c8006e2ff9454046a3aeb3314395e8dd82. 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/RUAGT2359692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc44a7727ae1dc7dc177011e3fcb6f8db5419c6771606a325c6f5b50566ccf2. 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/RUA1D2455255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad457a5f3e8c5ded462189bd32eac9cd062994ee1a65fe604f26d78b95f1251. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/RUA1D2455256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fcc27fe318975531c93dad9c4a7abf38a65cf0c7afc2d1246a9dc75421d42b. 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/RUA1D2455257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da38a2c58eaac07e05ebe52090b2cd86531c03a4eccf6564c3790fbb5a671fa. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/RUA1D2455258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbabd77e3f80b214330244c085d03acd1d993716fc535f075c99be98eb919189. 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/SMRUS0077346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df2b203f0310fd55d11c182caab84d39afe822c75df44698fbac29a390a1764. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SMRUS0078272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7643749c78572f2397a2b4c178f96cb276f754408e0b381887bd3470fc727de0. 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/RUAH62400945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8298f46c2d873dfc6261437d0b3698f4cf6c96efbf772628fa8459b3c20306a. 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/RUAH62424396.