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 0xebc625cc08c92be4ba41798c71919742728e31d970d27a82e085b1aa35c8f5fe. 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/125885d2-b2a5-43b7-b358-c66708bda475.json and https://artists.proofprofile.net/proofs/artist/125885d2-b2a5-43b7-b358-c66708bda475.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 0xa0d8f9d1e8758ad7d937deffd3429ebee7b10e66178f47f6104b1ffb2b485176. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZFYX1995050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80a84398f1b7ae37dc152e9c5ccbde16d0761ff1b201275a2bdd2c4a3f9554f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZFZ32073776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d90e9f985a536d266343c771e5595a3bd9a6500122dcc4e252f1857c6bc8509. 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/FR2X42076350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cf6092cb175a86ea59829e3f79408248aa0c726f1d528f3c1ed20808592ed8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DGA072148574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fcd1426f3f991c49918a2ba2db66519a7d76a0c95d5e4ebe74232c9ae09860. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRX202109203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014849f2e7e304097e848d4d9d580fcab7a644913907bad6fdd326229ea0261b. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:42:54Z), 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/FRX452137985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9666712982ea87270db4dc2239d69b297a009f7f60097da51b73690369473079. 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/FRX872190811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505eadd952bc8b631f16bfcce9dabd6d51772008ea01a87b0c137fb17051b6ec. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR10S2266844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb822aaca0b7c368893361311592fd36424f9b94546e9884cb5642a4a8cec9917. 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/FRX872270438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505eadd952bc8b631f16bfcce9dabd6d51772008ea01a87b0c137fb17051b6ec. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/FR10S2266844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2dc2956c4df9252bc393cfe9dff28919e5dc82d2c75dd311d79341bd46321d. 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/FRX452306695.
正義病患者 (Live Recording At Freakland, Hong Kong)
正義病患者 - Live Recording At Freakland, Hong Kong
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedda5c96d274795efd382bbb0d6ff33e096723c5087b8cc34ba0e166c054925. 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/DGA082369709.
爆煲急救指南 (Live Recording At Saga Music Studio, Toronto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2d059d52b6b8ae6ab93f4a24df08a2c8139afebe3728ecf44e39f66c7d25f3. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:55:12Z), 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/FRX452480074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9d96fb7803acfd3f3ef7ab589546e87d7b1e1b62f795b6c15e91c41b995a49. 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/DGA082438535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b59f53858d6c693e0a6a030d44c09242218692064cbd709eb83dc9303f15541. 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/DGA0P2466860.
山問（綠葉劇團《山川命・終章》主題曲）