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 0xd59535285ce557b977534ab806aea5bfd5340b6d3647e9849a3e60636df8eb56. 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/e4c8a0e1-aac3-43e3-8ea8-752c02301d8e.json and https://artists.proofprofile.net/proofs/artist/e4c8a0e1-aac3-43e3-8ea8-752c02301d8e.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 0x73e4a075af2239300b2ba503d9dea0f8f3a6c10273d5b7d09e46d6bc528b77de. 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/FR96X2192572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755e0b5cd395f37ba6d817c182a258cafd810677263a689aaaf4b5089cf95727. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/FRX202131195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8766278c3518e9ceb002b4a6c49ebeedd8a9587f8e1a81cbb0b03de2282369a8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/FRX762119425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa613ca4dc27a37bbc9669d8981322468cd271766d438d9a179f8a2d85a91b0bc. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/FRX872138732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6587d51041e3236e70f38330a24d747fbb5505dec5a1b64037a20c378d7fd408. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FRS182136986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9653808f6417a4e909d34687ba932abf9e52b9dc8e2b3414906cbb354145b574. 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/FR2X42268309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a828f89562a04be4d99af4eb27cfed8cf63ad7052d3e06d14a1c43871694b55. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR10S2351164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac429f76130f14320858de6d04cc82791683714878924ac57b3af116424d075. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR96X2413017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dba019f368dd22ef7dfed2a46355d621ae2fa9784f7da82f02d0796519f57c. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TWU712401175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f029228407daf335c39321b4c139b5bddbdc19a61059075434eb209ee51d7c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TWU712404455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127ac57a1e5df454ba6731ce90f163ca2438f321ecd64c7b6ddeeaf01c2b2543. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DGA0Q2447964.
聯合軍 (feat. 李宜柏PAULYBLEE, 成晞 CHANCE, $$uperCandy, P-rabbit, HighBoy & CuzyBoii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb0306a22aeb3162aa91edbf6d7af2f3e6e580537bfe9027a1e088b8b2e7eb9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/TWU712301161.