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 0x9ce8ea8569232207667d1486cb7660d2b206c952183bfd21390d614e104861df. 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/b4b6e28c-3aa4-46b9-be86-310335a4a606.json and https://artists.proofprofile.net/proofs/artist/b4b6e28c-3aa4-46b9-be86-310335a4a606.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 0x9db426037d54d493d0eedcc7d466b6191dd684849080330316d37f38c02a248e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/HKG732292062.
聽說有間店 (電視劇「用九柑仔店」片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e1455b84a40300a8a0e747b7cc238ce2035987aac29cfb8cdcc7fd4f33b415. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TWL251908101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268c0ad22671528ab26a3ddebec459ec7bc2bcf401a1856af41de616d95563ef. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TWL252008201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b20ea0755b77b9472ada7bcae4ffbb4ceb1f408495a7e691d54a9a0460bd69. 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/TWL252008401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b20ea0755b77b9472ada7bcae4ffbb4ceb1f408495a7e691d54a9a0460bd69. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:14:44Z), 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/TWL252008401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d160a19a9e8f82c67fa3396148b00d647e01c40a9cd087a483d27f098812585. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T07:55:02Z), 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/TWL252008301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42966dcbcb8569e31ffe43641d1876e096a86ecffefe06100a0b8a41f42c6be5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TWL252008501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa483df6ba20af0122c05876c55fd3e01698eb3edd7a59fc0c427d5b25293c522. 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/HKG732124364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188b630fa028ae6e7c9c47c2e284d87ad275e11b278c61e101919eb2e2e61040. 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/HKG732124365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f988aecc88eac9b66ae31baf4c8c17f4285866264de0d0713cae8f495bc8fd. 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/HKG732124366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560aad96f313c21c7435cea2aede5a46eaa889b465c3be11012d3e6d025b8a3a. 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/HKG732124368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e86d3470d0e49013bd291488cca4b4d622fbb754b0d27b20dfd15f8f229613a. 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/HKG732124369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2c54a8804b2a93898d3a4d048428e885980507e90076f4fed03b66da506caa. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TWL252008702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b84066bba78bf9f244e204dc4438d43e2eac189d5743ce76d136a822039046. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TWL252008703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8508091269774d22074abaeb5364699f0059b9892ebce0b890a5b9a94263549. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TWL252008704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268c0ad22671528ab26a3ddebec459ec7bc2bcf401a1856af41de616d95563ef. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TWL252008201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73e51a7774c55d2560c896806d19f63e2a0a018983f9178425f34279d6932e7. 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/TWL252008707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2c54a8804b2a93898d3a4d048428e885980507e90076f4fed03b66da506caa. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:08:17Z), 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/TWL252008702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b84066bba78bf9f244e204dc4438d43e2eac189d5743ce76d136a822039046. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/TWL252008703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73e51a7774c55d2560c896806d19f63e2a0a018983f9178425f34279d6932e7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:38:18Z), 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/TWL252008707.
秘密 (影視劇《靈魂擺渡•南洋傳說》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf452ebfb19911fd689d0c4d21ac3d0f498d0c2f19eb223b60a5ac32c7421046. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:06:46Z), 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/TWL252100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1037808fe05d1ee5b59769edba92ca37ce202d696610155722748b38da67d318. 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/TWL252308101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1037808fe05d1ee5b59769edba92ca37ce202d696610155722748b38da67d318. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TWL252308101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad01743751bb91eddab43fbe05c85b2571da592152b6177a76de5217f04ed804. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TWL252308201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c258c333b8f267dad5cd46a08b57f475900fb662ad578c3239981cea30ad908. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TWL252308202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652b774927b847905fa3709609923579405bc8a02f785a185b307ceb90d54ca0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TWL252308203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac1ef19eae74ffb98b7eb0bc31f77c1687ef0628878b8a00f1af847506f0314. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TWL252308206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c258c333b8f267dad5cd46a08b57f475900fb662ad578c3239981cea30ad908. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:38Z), 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/TWL252308202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652b774927b847905fa3709609923579405bc8a02f785a185b307ceb90d54ca0. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TWL252308203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac1ef19eae74ffb98b7eb0bc31f77c1687ef0628878b8a00f1af847506f0314. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TWL252308206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eecbcb8c6e2c93d40bcfc020bf3f23ca8fb0dee1df71cd4353064ec73d4469e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TWL252408301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183b04202aec7eaf4f03d0702ffe38ca0851da4e5c76b0d96266581180282186. 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/TWL252408401.
不灭 (《斗破苍穹年番3》动画萧玄角色曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b38d583ca40ae6b6a6c928b4fb1ce30da442c11906f161a09528fae8d760ff2. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TWL252508206.
聽說有間店 - 電視劇「用九柑仔店」片頭曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e1455b84a40300a8a0e747b7cc238ce2035987aac29cfb8cdcc7fd4f33b415. 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/TWL251908101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd73f11b2488b5129a2ee3bfaa41c91ce23a719b360b29172705515c961c45e. 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/TWU712301816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa483df6ba20af0122c05876c55fd3e01698eb3edd7a59fc0c427d5b25293c522. 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/HKG732124364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd73f11b2488b5129a2ee3bfaa41c91ce23a719b360b29172705515c961c45e. 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/TWU712301816.
輕紅 (電視劇《點燃我, 溫暖你》劇情版插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1efbda88a00879369dcbfebd7bd6e1bf2dcb99006493310ce23f4056029663. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/TWU712205483.
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