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 0x39a5ac5ecc32bc969ea5c7d4a660c4f0450d71c050ff1d567dc0a8892f68b6c2. 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/28467f14-d990-4c9b-8291-d29f33e17ee5.json and https://artists.proofprofile.net/proofs/artist/28467f14-d990-4c9b-8291-d29f33e17ee5.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 0x02394573521e923418973eacd1651c2303e0032b3aa61885ad993be043455b46. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/FR10S1671750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a164f2e55c77b734b34543a4e3cd2699f12282bc863bb4a2d6a832c7646dab. 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/FR2X41618606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d62a172dfc1de8134da0eebfd99d3f31cb03be9b85dfc8c37a108b5c3daf8b4. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-15T21:33:28Z), 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/FR96X2090462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb976511a9f80b49c03c13876ca8d83d876efed92ddd36f1d37ad4d614c4b71da. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FR10S1655544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec919b42b1031ebc3e8cbac93b9593ccb7e53e9ab39c61e65ae57f8ace5f623e. 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/FR10S1702247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d35ea4c3731651bf61e008e2b75f21cedf97c7781f51f931eebbfcda6c7fd9. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:23Z), 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/FRX201857890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd457ff7d0b038379deb81395ea5d581b529f7d064efb02db5b1e0489f9ec9d8. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FR10S1854433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c4fb50043d2cd187791f7ab78831ee1b03310f0f105fa5473586e2c6bbac24. 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/FR10S1835434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edb6793e1bed52b188e3e32a32d8f7ce0e927e9948c4a6ac48f58343cc6c57d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FRX201839451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65e0e9f62ffe62cbe3613871b8ab0ccd78b1e5d18d35da175bc7352c4785e8b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:08:20Z), 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/FRX201839454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2221e7bd18e6a6def7e0a05956949cfeec1ccd649d0edade8276bd93dc80ee2. Chain 2 (Bitcoin): anchored in block 957561 (2026-07-11T11:41:29Z), 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/FRX201839455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7706e41a2aa48417997b4060d478ede5e440b1a43e43b5c30815d193d0802871. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:11:14Z), 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/FRX201839457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5564a6b8d6beabd9364158268495da733222fe4e2d977706b6163f09c83d7e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:09Z), 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/FRX201839459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea7f9b35e83f6dbbfc950f4645c1090a2d124a909e7ea4718532cfd0017195f. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/FRX201839460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b83787b64df0508b454e60bf473df7e5e189cfc5b1a94f920fddc380cc53791. 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/FRX201839461.
Đâu Cần Một Bài Ca Tình Yêu (Dsmall Remix)
Đâu Cần Một Bài Ca Tình Yêu - Dsmall Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2378c00e28ea05bf0c2c1426c4020ac7402e38797a35e56e21f201075f4dffc. 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/FR2X41984902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebaf542b6d1988dac4e1b10884dc8588c65aa6ef8037aaf5a78d8c810686ae7. 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/FRX452027114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4973b44fb56fde2e6ef988831765a247eb0a2c506010c4ea02b7a75872455331. 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/FRX452027115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c1a011cfbf7a5207cc09bc67b788bf784899e95c7309f417471fde180e090f. 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/FR10S2170882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82652b40958dff4574e295e251a8a2d3506bc4c85f26e50ce0eec65df923dc96. 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/VNA1M2103568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7634d36fbf728481aa90833e60bc38866b1523b1d38e477d411e7d7e622fa041. 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/VNA1M2200989.