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 0x62fa9e4173f85d79033a28624f1f05eb2ed8e8ce3a549ef7e0dedb59add06514. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21646247-5cc5-4d3d-8a74-f2f66f0fc957.json and https://artists.proofprofile.net/proofs/artist/21646247-5cc5-4d3d-8a74-f2f66f0fc957.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 0xa9c62d7425d2eb59b4d1bdffcdd9380d5c7b19b35b47e1db278b9186a5083d90. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/FR59R2086962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333f4b2200c815a46171c2addbaa277b335e39cd3701aa4b70639b6caca2bba6. 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/FR59R2086963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48be0544b4dae747b0afb4dad87552ad652e941f069747a7dfecd1c797dba630. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/FR59R2086964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb678c4bcc7ef57e60250dbe46ad8f8b868472d1957cbd2ed3e1d4e3d1e0cf2ef. 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/FR59R2086965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415b31e6babebf40547adfe48debd3866b02a23e7305edd1af244d7972266de8. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FR59R2086966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abaf4d714a3c63f080f0af56a2241cee4cbe1c59a22cf42d2a394f473ff69fc. 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/FR59R2086967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eff075f687b934b8ccfb4bd855543879cff3a74b46aa38aa3a8ce0df7b9064. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR59R2086968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3d96be326f519ca87d2aa1e629bb6f31ba41e128ff359bc095ea96c994be5c. 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/FR59R2086969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8312ca3a87ed6516f69f07f96a0d7ab72ce2696a14ec2078dfa4b89be05528. 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/FR59R2086970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258936edf516ded7e8564c9c4c1fdae837fc1214686b128480e9b4dfa9690643. 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/FR59R2086971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcceb23d5a97b856c06ec83fefb7031b920e9b5f539252057953f3607172129a. 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/FR59R2086972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a5bcf81d26e681fa0922c54278c522ccf9f5a5ec5554d57f71a9d4c11872aa. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR59R2086973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29919a681d6100352c027762cf3eaf1c89b1091fdcc715dc5323dd036a59a1b3. 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/FR59R2086974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c51d64803f4ee41a99724b60221d1b899273fd7d12618f74f45052e7ada113f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR59R2086975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55ec8275a4d75cadfa0c44a566291453a1147bf953284b02617df9e853d7b9f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FR59R2086976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9269dc61db73bcafbbc7782f529ed47dd8c523fa90021f3bd7ba840c17fc03bf. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FR59R2086977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc51a0214e03ae70907a64e4032764a9b842704c09c2d19ceede348e85fe8bd6. 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/FRX452369302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca45cb3d9bb3000877ee0b391ce6646c901c15730ff4ebfa294b816bfea4f0a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRX452369303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a15b807f9e351311f6de812f1bc96f7c02c89de81a17eeaa10f257d1e7ab778. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FRX452369304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b8a6384ccf6576f792348334ec3bfbe1de90434090a5437c682bec2740b726. 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/FRX452369305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafdc873f66361e2d75815e97db7636d206a4b9fb2a190ab960a49bcd7edb530. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FRX452369306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1513c31fdcc79c7947c450931916615ef3784d54a774dfcc29370a8912f7987. 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/FRX452369307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d4c45348952138960bb95e90ad7b5cd5aa3bfa168413464942f261ba38c257. 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/FRX452369308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8931fd46ad6936ce5cdb33600c37faa0dbca51243be51ef0663ac5c3c3c713b6. 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/FRX452369311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ca7ea669fc1371b6cb3a1e0413c481df7e9907fea451bf2a4c0a64afe43208. 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/FRX452369312.
唱遍市場 吉馬大對唱 5 (浮世情懷/愛上一個不回家的人)
唱遍市場 吉馬大對唱 3 (針線情/素蘭小姐要出嫁)
唱遍市場 吉馬大對唱 2 (風飛沙/浪子的心情)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb13d97f39d6544e6fd1a91718cb51b87c1491f62377b9b97b6eccd98cf6d298. 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/FRX762311354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837aca43d2bc6327edef386e1d6d146bcf3f918403ce5d86981f287ac1fdb712. 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/FRX762311355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6059aedb46a3207436bcba751c1c474a31fde90db64450928b4c52ff8598ba. 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/FRX762311356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6980a3be50fe5d21f24dde7df6a7e850a4f2f2eb9bfd59ab26e8753a5bed0669. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FRX762311358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d252c652a70375dd03f50109207f748bb5a08612483ee29eb1963fc84f8a5e. 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/FRX762311363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36673aa38207f6bb46e50d13fb3c05f551fff7fe9332a19d20dcbdf6d97afe13. 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/FRX452367487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2522ddeb45961559d3026247483571cdbcdf90960510473617e3b1a1406f5d83. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRX452367490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1858406f6ff2e9b637f2665b8b268db1fb9f1be8d0174d2cdd77d8978c61d2f7. 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/FRX452367476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8523ce31dd29ccf21a884a0c83a082b0625d536d97ab5900298707436532a26. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FRX452367478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3acb4e9b25665ade1312bb1c8af0ff1d5ce5f67c1f273f63bcbc3584ca22495. 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/FRX452364372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3086c1f86dd0db5d00febff79b807c8a0bd66b9acee7724257c1794d5c38c0. 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/FRX452364382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16433a1c25b44e09463ff3c98484bff46d2f5f13c178b20f0d9355fb265af4ab. 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/FRX452364367.