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 0x3887ce0db3e2b143b264c844d77593e4e9cc3d9ac1baee6c6bc4519ed8d2b37c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da7099d8-42d0-4fad-8561-3ba5917f3aa6.json and https://artists.proofprofile.net/proofs/artist/da7099d8-42d0-4fad-8561-3ba5917f3aa6.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 0x40942bc8e6d7e3c79fee967b4a060c89cb8bc2b537c7a518ea85e8b7f1973971. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWCC32105378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd67355fb6f94f8f8f31e05f0961e93178d9db4a8c0da003feefffd67bb9f6c6. 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/TWCC32108783.
傷痛也要一直走 (當我們的手勇敢緊握 Demo)
Baby Blue (Blue Microphones Acoustic Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78a9ae8745651e3777b8e3f62c22a453e205cd58fcbae5fd709c432dfdc5f6d. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TWCC32200299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9212c2868d6a4b131a73d97bdb80fda4ecff70f5116020a7b384911642d92bd5. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/TWCC32204190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78380392232d599b4e980c698f3a469587c050c14b67b4d08082e57c28c8919b. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/TWCC32300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b5e9681af579f154641aaa24532d8c2bf8b05437381658d1f1b74a32ab782b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TWCC32310405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2349e4c2739a3a15a6ff23b6589494c57ea740c90438cac6b30d256a83be67a5. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:56:51Z), 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/CNZ842300839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc021aaaa8135c24ede037a91e89940ba42b8d307dbc68354102a14b714e9a55e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TWCC32321318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e059f7286e829947be9b7210ad6d097846d9966d7bb84abd88ec37dc19c33de. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:17:29Z), 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/TWCC32319121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09ca82186cbd802efc1163e22fec64ee94e9abe67dc21419d70a5c3498a464e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:41:53Z), 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/TWCC32400362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b6faa24c2b933dd2e87151809c771275495f8e81444abb40f74f926da63a30. 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/TWCC32402915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923f29ec700816e530a6ee5806da5c6d26e8ef046834fccfd88003cfe6f40c2f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TWCC32404637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79164410ce435399d07f4b1c6ff528154f13d248e379d275055f6e9fbf21cdb. 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/TWF712400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282d2d740a0eb19475c6f66796403ef80431eb8af46d27892c233ec06acf203c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TWF712500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ce7faf71b53fc411e1fed2cec4ee2fb08a872fa47ae7473998bf2b1d45e30d. 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/TWCC32311089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e6e9a266c834532ea7dffc147a538ba2924a2b8e5c4327f5ecb2f67f5b2b98. 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/TWCC32200621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82eb73f0d99f2f935de754f52b0d3cf1b9f73ecb356a56f54b420810a635eba8. 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/TWCC32311485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9957898f82c44c85168b253f6d39e9bce54f62c32d7dd536752e1cfac7178850. 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/TWCC32319631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb803a65aec697a637574ab024242ebb52947ae812c7bb54c51f2fca0a61abe48. 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/TWCC32121256.
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 0xa17ea5aa283c5889beaf117e94a4cd9f7ccb2f2310ee8c515a36d246abb03deb. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/TWCC32318470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d98954e2562143206779ef372009faed13a7fac97963ceb1fb4eb3cb3990b8. 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/TWCT52433514.