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 0xfedda54d333dbf01fa19abb935e798e371d01117bff85816e6e193bc6212d958. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39140724-9072-4e0b-9fd4-9a6113dbff12.json and https://artists.proofprofile.net/proofs/artist/39140724-9072-4e0b-9fd4-9a6113dbff12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
金曲當年情 : 世紀國語經典精選第三集
金曲當年情 : 世紀國語經典精選第四集
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 0x4e49f9db86cb439082c9087c4d56cb60e2dda995ee8c2f239230e29a2f5a07a5. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TWAN76690101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a02c782452a73a42ddebdd5ae2600c7d9728036bd9efd3c087d71484717192a. 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/TWAN76690102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5512ca5ffb83760bcceec7ded15989c6cf2418b40761b86676ae47613b6a2e13. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/TWAN76690103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b44ed6e6e82465b340171626fc8f4d3efef0deba606238699dd63d73c1cc10e. 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/TWAN76690104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398cb5b8937723ad155a3ee37db8af03adb0ce4278c41d04bc724016e4e09b04. 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/TWAN76690105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d30afae0779a3857701d7f1df2bab958705558d9393e97a2a347e56f91d22a. 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/TWAN76690106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e49653d012f298b11ab3dcb2652596acddd49b30aa65b2c74926809a087a296. 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/TWAN76690107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9632ec07a79993ee5b263871c9e47a48f9bbfe411433b6d0e56aa3b36f558f58. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TWAN76690108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a53dc69c08366869ff69f80fb388af7874307f2596d25e7f3d35d4d4d98ad9. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TWAN76690109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83931d311bb841dafa9abcda8fea7ba02732293768b62f394e68d033e71e9678. 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/TWAN76580017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054d39e103fe8d02eed2c741c6a3ba32a8f80f703cc0197e3a05b179c8516ea6. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/TWAN76580018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514da42a62c1501f9109dd653024967ac641fea1daa13f55ff81936ae5356d20. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/TWAN76580019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698586942e266935727a6d1825780741a3e0ffce272a8683cdd7d847245f1a3a. 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/TWAN76580020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e0b81ea5111374f083db37b883bc27f24ca0fd1bc754c76fbec44ac96a3a4c. 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/TWAN76580021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62220cb66367e443fd221da98f8c224b840c35dc0ceb14cf95df4deb808f401d. 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/TWAN76580022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2ee9f801254c006ec2efaac3f5e4883dc404dc41167233ccfdff627dd60431. 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/TWAN76580023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a5f5d59cd9542be1ec243c17e1eea34f08e4a7d418a1e96db2e182677272a9. 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/TWAN76580024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428477961a104a6b0d6a1be394a86efa3c479ce8275a7390b16477d97b9db448. 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/CNZ852320784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8ab538f4659a07c54aab555f98c1f13dc2f93015ef862386aeb99955eb9289. 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/FR59R2225115.