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 0x5ccd2d7a5eb1d7e40e68fe3cf7d3f5ed9c742f252d37a825d4d3d08b4115cf4d. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6d78171-ef0f-4793-82dc-228a0312de8d.json and https://artists.proofprofile.net/proofs/artist/c6d78171-ef0f-4793-82dc-228a0312de8d.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 0x49f89ee6eb3889c056865edf2990c586e11812d2a97949cf5c57252d0697aae6. 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/TWAL31800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cc7b236803291a7014bfcf314f04c22ebdb969e75837902182871caae2da25. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWAL31800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57159e4be41d0dd358d1352b068846831d81689520bed57802259ebb77451497. 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/TWI451600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3865b522914dc50ac046805bcac5f38285c81af093d67c8b52b3c7b0a2d2da4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TWY211652001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1a15e3724c3b23e1e54b4aa63678cc586377bfccdfe5ef2df273de83f2ce6c. 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/TWY211652003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82660dbc8c7170eed63d5b153d04ebc63c28a1be00fb967db83d53f4446f329. 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/TWY211652004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f9bf003195683f7fdd197188e8659dc437977d685fdafe68d05d5e4982fbe8. 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/TWY211652005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167ae5087ed0511bb727bc61453225337655e9d4e696daff74e585e57a7fe058. 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/TWP011741102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8d78daf9bd255f816eb26f0e11ee4f39a7128a8ff393ff0ff9a2d6bd74cd65. 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/TWP011741103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef0f34dc3c52f0313ea49cd972a52726d8690fadaccf575c8c8ee67bee5504d. 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/TWP011741105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfaf27085f9bb08d3dcaa57b1068d29a7fbfeb1d17f8839f1f5513b891798d12. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TWP011741108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe776a8da2bb10693353103bddf94fc81f3a1b1b4fd5ad8306b67d0936ebaa451. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/TWP011741109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c010f7f7e78a8669edd0a52382adfc442560a869fdf143387dac83d04fea14. 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/TWP011741110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf693db4126fe5c751c84b8859b94c3a04c023024460e42fbc46d812598286f. 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/TWP011741111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c022842e172c0bfb6a613b1795d19bab358463e18b35e78a824ac9692d6b61. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TWP011741112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa7e3bbe50b5c7e8ce09cec6a919c5ce3a390651189a9f1337abc4dc083b038. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TWP011741113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9234944a512af2e99a390e3901230b0533a8908e9ea0271ba0c19c9f5bf264b2. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/TWM671509001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd779c3db244a9cbb3d8d042afd798371970147d85cca4dcb25213aaeaadeacdc. 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/TWM671509003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e89a3c619eee151ed9f832a45dd24fda3bbcefbbb874308753d2a48ed90f494. 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/TWM671509005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b2483f35e90a1a9d977a834fdec944fdddc1bffb8b0986622e685fc05ff143. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TWM671509009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01584647f7d0aa488cdaf2a2c67d3d4b3373f1b38dfc5f0e2fb9689a18c4ec09. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/TWM671509010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e55bb28646c994bc4b11b4c6a1df91a3b7ebcd17ea5e3d5d556d41584df8d6. 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/TWBF32303002.
小美 XIAO MEI (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd74eedf5b7b729256a2672763741dd0f1ec743fdf984376026f43dbbbfef2cf. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/TWAE31802500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098139bbb74676777aa949319028d3ce9faddfc7cf7d4d2b742c32cf2bff9e24. 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/TWV271702707.