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 0x5f3736a0cf45aec2565ae07941f63e4916eb3706481e3d741c0e96496b1e819f. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85e4eb5b-b14d-45f5-83ae-8a828aaca851.json and https://artists.proofprofile.net/proofs/artist/85e4eb5b-b14d-45f5-83ae-8a828aaca851.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 0x87292432459420a5a8a6c93445f4680ea56d9eec846161be941a8708b6d32586. 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/TWCC32201220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956ee3b350f7dbd64c36d527079777e0ea9daf1e4e98542f252bcb6e19c231ba. 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/TWCC32201221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2acdf9653f3405cc2e7b21edb050969a000f736830eb70488185e31c8e2ac01. 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/TWCC32201222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc22a5979b522f765053b0ed37fafad1095d3a1e4e71a033f66e39329b2754e4. 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/TWCC32201223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657e4e0f76ff88c9645cbcc8dc98d9985573f62bb3ebd0e4cc0a9a381969c6f8. 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/TWCC32201224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0de650a4aeb43d54395a55e44ea32f9a80b73bbc9ddfeb4d188ca5ebdf48d4. 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/TWCC32201226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e53708aabcdbe14ae529898df1e7294e91f1479a4ae27ce14693e60f37d046. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TWCC32201228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a93ba45f52bafb2af9a2d9f1385f12d3bf4a00bd55185e275635b6caf8fb0ae. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TWCC32201229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5de51c64a6e01c32b8b03ce6c1eb2d5be06b141201ebd785b3ed818e1b2d64. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TWCC32201230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aa2b45ae7c16c5a9427d1eb3ee9d1bb67a75b035b5293c37c9fee18bc10b68. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TWCC32201231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2784a179244633d2f9f57734d313102e6bb0baafd03e4fd7a23f6163aa18361d. 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/TWCC32201232.
金色黎明 (網易《陰陽師》手遊SSR階式神 瀧 角色主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558a4cea417341ce1c6df14de056fb2d8c66db5d4c09cac41730fc77ccd816a6. 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/TWCG52499992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629416c7bc36844ea937cb5dede3f66047cf4f128e379252da076e68ad84602d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWCG52499991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86a6f4c4aae26dce384e1ace4c683869584bdcfc32d1618fc84d6b8e5b97bff. 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/TWCG52499990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac58b0580d3172a1a3c9b009d80c5588bf3940c7891eaf5c5c67c5f89ecc6a9. 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/TWBW52220114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65fc36292f3db6385218986e464b52aeb53c365aad1adb49a4f00af492d9621. 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/TWU712101867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a59430caa0581cae6031847608bdc64af13511a68ff5dbf8d97a9fcf8f1dcf. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/TWCG52493114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda7601671f35d7d8625fc813f00ea351e1b8852b1a2a861ab17230839963ff7. 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/TWCG52493115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4259ff64e266426e5c8180a6a31a568cfaae62f389f072a9bcae101dc3141b70. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/TWCG52493116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9679a100c8a759155d0ae2b78d0b18a720227901922c2650bf7040de6f9350. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TWCG52493117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bc1e964f0f0b38670a1ae1aaf8019f157912ddf1f2382079d0f09bc01f6797. 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/TWCG52493118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5afaffc327442d252cf5243f6c406eaab71509196f5aaf38ddceaf32e7d7d1. 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/TWCG52493119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4999f4e9b0d64fa61d33623b26511b7e6ddd150de8a144a04fad610f7841de74. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TWCG52493120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60a0dbd894bf96d63b65f6dbd9853d9cfe150482754517cea7ad469fcae2285. 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/TWCG52493121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26e1d10272cc095d60955cb78dd15db028fbec0147fb81d23e34f8fb27335f5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TWCG52493122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1d5b9418947db7e073b8eeff71d40ca838c595081484adc187294bfb1eaf57. 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/TWCG52493123.