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 0x66ef1139d7932d98da222283d5866ce627888396ad4d254d751e38171346c929. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b15248ea-20e3-422a-b414-a6b1fe5513ac.json and https://artists.proofprofile.net/proofs/artist/b15248ea-20e3-422a-b414-a6b1fe5513ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
共和国的歌声 (纪念红军长征胜利70周年)
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 0xd605c2aa5b7904dd2ae925e5b597ce0d3dbbcb8e5b0adc86418831f2cf9c9758. 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/FRX282230400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18db9341d130950d2ebb88ee4d61f0a3a51a7d0399ad227d36da1805f559b9c9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR59R2294711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de409880b945c064bda218b28c28c53bdcc98a7bab504be828f8dfe2688d972. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX202278452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080ddc6886e727338169565ca9fba692dba4a596eb5ee4bcf9d57842841a3467. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX202278453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e848d9a466ae55faf36065a2259d108b97e207f62e9d63156099f60a523325. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA072308666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb59581a30c980ca86910d5ff88374a9c4af801e7493c0ee1092a3411cbc28d2. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DGA072308667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ac3741721d8e2261abbb7e59ae5fc6e8b4365c3b4a15739c29f61a4f1f55f6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA072308668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecd4dd6b39fffe2a103225f4917d31e3a85588fe85a3c8087b2e59c66915e4a. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DGA072308669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e28b150aa5123a065a14be6c0119bb2c20e28837d16461c255e0547e911c454. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA072308670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9db7ef8545e953b404afb905612746c1a26319015448ff5234e3e22240221a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA072308672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883bfdd1ae828542c3ee91fe35d1db886053c856304baeba1495f1bd11f7f947. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA072308674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d2ff524469f53d15f40610b35bef55bfb4a0be9b16a2e0f46b8b926307b738. 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/DGA072308675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8842361651fe5f020373fc8da6994994bc2a0344df431194f2dad0631451db47. 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/DGA072308677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22ef36a46c976e8e40de873d94ef2e656aaed72b0c252f8e500f66efd99d0fa. 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/DGA072308678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab42f555841e34f7239b851858219d92a7c4d8498c07fce733257852d5e31d4. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DGA072308671.
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 0x101e27a80a0237d2bba59d7f574a647e01e2a2dbc43956755cd89289846b72da. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA0L2346092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752c595714573a365248a959533e7b68171f1e71ff790df8d9e4e4785e6253ac. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA0L2346094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a9e21c02fb0066f7711049c737a9e2ede6acd0f407334934f7d7e49cbb6c36. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DGA0L2346096.
长城长 战斗精神篇 (孟庆云作品音乐会)