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 0x07f33dbdac08f5d0a0c8666a9e3212c32b08546a3e7275a22b605036b7990b20. 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/765dc530-4ae8-45a5-8b27-1e2b274ca09b.json and https://artists.proofprofile.net/proofs/artist/765dc530-4ae8-45a5-8b27-1e2b274ca09b.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 0x0747ef86cbf4f09dd242899e1a45039fba8a28cb03477e5f3106ee8873b60197. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR2X41850019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb1009421478a36824015b25c7e79b335e4725681fe55c0e941cbe35b8aa954. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/FR2X41850021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2ba238537146376718aefc1ba33251a2767182059fa058cbc9970e260d88fc. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/USZ4V2000371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b7b3295f571c265c4e6154e7c9d27e82f9dc46bc9dfc3e6c80a781fdd68b97. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USZ4V2000372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2c6a682573d5600269a0c594c8864fbe9a6104660310b90a802261481b7f65. 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/USZ4V2000373.
Wet Nerve Stages (Maritime Remix Version)
シナボンが波のうねりに変わる (Cinnabon Rolls Into Waves)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098c3260f3f9af9e9f575972de6ad1dc719e18a8cf48e8a2f3b396feaa295343. 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/USYBL2402273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e77eb040dde336dc411982e3f973c59b62ca5ed6bb3dae78659b2c857ee2766. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:29:05Z), 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/USYBL2402463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32ee30bc163c4228b1725080703f5e290bad61a279e81088e61ce40a4341d05. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:18:56Z), 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/USYBL2402465.
Circuitries Round The Shape Of Your Heart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d42db0f2b9f4e7b267315034f8a1024a6701e185c1c687889fd99db0130941. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USYBL2402467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc8e2ae62a8a84bd3c663ec32bc10b7571ea05660d0e2e761919327b3da738b. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/USYBL2402469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19f72a2e48f91c3ec5ffd209535ac7591523962eed44e3151bbc2d23e463a79. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:32:08Z), 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/USYBL2402471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6343e357c5ada8eb2e9726e5e501460607d3772e6b7b150880b6b58e2493bd5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:53:14Z), 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/USYBL2402479.
Nordic Flora Series, Pt. 6: Outlaw Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b962d136a571d00f173844a83701d3ac58e55ad9c2c1513af09e1ac0c76999. 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/SE5AJ2202159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6fb3b2053399b89809dbd83bffcb1c6ad07c228d015ea89f74d8723d6fdc24. 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/SE5AJ2201915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031c6979856617d3216b1ff702ec38ee6837668dea6f3a5498e937306ed9db16. 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/SE5AJ2201740.
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