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 0x037e661c186a129572570f81ecc2816ce12beed9bc6ba1ee0422d6a965cc4786. 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/4bbfb594-abeb-4743-9376-68babafbe029.json and https://artists.proofprofile.net/proofs/artist/4bbfb594-abeb-4743-9376-68babafbe029.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 0x66910f7f436a1906219dd66a638b46421837966601f5380875f5875c1572a7e7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a164e87019b1d088e14514817ab2b8ec6817395cf1b63b3e6a6af6652c20c22. 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/DEYT72300195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b463e44d3d236b1874eff109ba74f16fdb301e1e6a72f369da863da4db098b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7f060bc1ac3f66abda66a94e001342342540c28c49eb0f6516bcad7c6421df. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72300166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb561a76c1792428154833105e10c998b573db618f5966098bdb87e3ccccb7f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEYT72300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbe566df38f8ba04c9403fea0ba5f0d4a76d4e99fe9f450b228e89abebf60af. 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/DEYT72300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82168bfd63d0e089ca0d9fbd8a8000393334f1549cee47dd43156365a1ae7b0c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEYT72300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acf8e6def5719b47f137566b2b3a3a7aa3209bb2b134cc19782b840858389a3. 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/DEYT72300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece7f105fe2ac32b73dca98e7f564f9bc10d84ca48e73cc676043c990b90d491. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72200419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde27d5737b06cc487836afdfd66631d4b4c33db9e246cc5e6a8b8ffda1d61a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8a7c0b359086ba19cf35656cf358779cb55fc74dd7f456fcf06ac64d98cf41. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce619db1c8766d2d036ee098d86becea9891e2f06230c861c18e4f27225219f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEYT72200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5841ff8a3a29cd005aff4697f3a2d9d8461248a8cc365d172b2f6d0666c7b75d. 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/DEYT72200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0646dd74c97cb2eec81bfbc9771ab07f1f2e2c9d75a15668953c53026f44eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEYT72100522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e33049ccab5dfe2ab6e1fd40eefc2017174de2de2828cf53cc833249dbc099f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72100418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6a94726dfa0ae1c4f972c3331a6ca65170ac1bb3980a9a0eb5e6a17097516b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72100417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44b003267857b53169552409fa4515cc5c432ed9bd0ae52bee63f4485de1465. 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/DEYT72500197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfede2d717af2606c5011d627315cb1f75986049afc0979f5f8e472635c58d82c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbb4ea0bf9f0c29a75123dce9369d0fc54cc12df88cb44eb9861029fd0c888a. 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/DEYT72500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6952065bb121a7eac0b332c8b1d7c43c567f7a07cca2b3a975964f1cb122e7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3066a49c5990bc511df7fe43ccbc867fae3df3c8e800137fcf0381e5e0470818. 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/DEYT72400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4960e93638d4bdf9755af89178ebd9d8e0d9652b58cf6560add9b3017fa8fb9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEYT72400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffb4da7840e499f5188c993896429ff12481f1c2330dd63198f3b98dbde05c1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2784f83300b14a2e487235bb70c75a11a7768692215a3654c5a323ae46a0fa0d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEYT72400096.