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 0xbafc63b644ee1a1813028e3776bbdeaf0279bb6045e7565188dada816be129ff. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adc02485-6c89-4588-9d56-b4a92966795f.json and https://artists.proofprofile.net/proofs/artist/adc02485-6c89-4588-9d56-b4a92966795f.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 0x5f6a3fae4c971c5f28e9a2700197adb146784885a37c2bcadedb7f9c86103a92. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HKG732144166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c161c74aca5b476d062341a8b0a19ac503fa3c98f6f5915521d057cc5ed145. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKG732144172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4812f4ae90c684adfc1a55b2e0482a2fe1b4140767fc4f061252da451186ddb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG732144173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97d6ac811aae9b95146c03245f8330cedfe13823406196de8834ecf851f293b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG732144174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59e71d91fae7cad7acb8f2d42ce2de83c001440f81529d5d7077fffbea7a9ba. 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/HKG732144175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75866a9d61430ecb3f0c4c56cee0585c657490b78b5518d02ef05bf041fada8a. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/HKG732144167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9a49e9dd6e917051a76f4edfd22e21f2e3bbea4c0273760e2b53b981a84bcd. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/HKG732144169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01d709473e2cc4d6d2ddfa17ae9239fa89ed777dc3830991bfa303f6d82322a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/HKG732144170.
7654321我的朋友在这里 (电视剧《1234567我的朋友在这里 S2》主题曲2)
7654321我的朋友在这里 - 电视剧《1234567我的朋友在这里 S2》主题曲2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066e6056c9d5c56b10ad97dc4e182d37e0dcf103535e2e5d3dad1d6c962d9aa2. 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/DGA072321642.
1234567我的朋友在哪里 (电视剧《1234567我的朋友在哪里 S1》主题曲, 民谣版)
1234567我的朋友在哪里 (电视剧《1234567我的朋友在哪里 S1》主题曲, 抒情版)
1234567我的朋友在哪里 - 电视剧《1234567我的朋友在哪里 S1》主题曲, 抒情版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed5a87265d047fed79005fa0f6f8905c5e2f2697e6326eb5de12ffba8fdbb41. 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/DGA072364323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91eea034f4a8cc32a510a6b429097ca4948073d300a9f744c5a32f031ec4e2fb. 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/FR26V2072567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d4188f8cf80e249316746b6822dfc71d0d84f35d38d84e4069e5e9a9805426. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FR96X2028367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aad19c873e7d8536ca7fc7755a913a78b19b362eb812c97ac7eba13a3f9e20e. 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/TWCT52330403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f67be1aa3e2062015cf278139bb85b30f6ac121a522bbbadc7a6c48cbf90e8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWCT52106066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330b903e6e895b960b45a928b367cde3eba2cee7ada2a9d5dc227ea9d6c51972. 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/TWCT52208291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ff2925a728531bca9877d87ab5836445245d717349edfbb943bb55dc8d9a92. 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/TWCT52330404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5999bed74c059cfe920c3f5389d92eaab147dae6a5218ca0ae3757bd3bc6a43a. 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/TWCT52328042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb2a403e27d4a03747b5559ff9b25773057cfc3e13e6b979e44d01f4a961b3a. 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/FR26V2045630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5535dc6df784a01de3d3daa2073c734dc035c4b28b1c45492b5a2b5a9ea1b8. 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/FR26V2045632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc54ec880ac92c772d4be4eafdb81bf0b744fa11593f942e4543dd031efd388. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FRX872110268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa801a8fb12362b046fee29e42385cd8f78e308a69fa9259dd4e406c404057626. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKG732145284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535641536f6e9aabf422529f8de77a736b74af5eae3d03d0daa1825022643b66. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG732145286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703f6f6c249b6f62cd526032efbafa4ba12a2a416dd3ce9b5df92cd472bdb7cd. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/HKG732145283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806cc1217553ad5527932b902015ef643c8b6d3e2a304b98538ac7483b12a469. 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/QMEU31808728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6006326d2c3546e74cf1e327a1de8da16c6d05eef1353e084a7c10759b4943. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QMEU31808732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c1eabc4fada58290d9a8f00bc4f01d3a5df7dc3d941d71119b9c559f84478e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWO131905403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583b4fba4e29ff8b3ecb807fd670e0a896162c2f31c0f341e96991fe5ec461f9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/TWO131905404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79020baa2b177ada2f16ceba588710f43640de81339f1f1c890ad73d64bb916. 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/FR10S2119086.