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 0x22e504c0e2f8975a6c0ba774fa6f6828e90755ed718411a53ce0376b726e11c8. 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/b1e1ced6-c074-4b68-a05d-65dfada71670.json and https://artists.proofprofile.net/proofs/artist/b1e1ced6-c074-4b68-a05d-65dfada71670.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 0xc34a88f91aeec56642b8a4289a8e40bdcee89c439b0b0318c45b9a698e7b6c8f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEZC62004102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f9a91ab3027d8300b0e352fe31f9c79d1ed8bb4919ff39da3dec5097a3d82c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZES72117392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059d18cbb8de8b6f09b4958a617729c88a99dbe96242a7db159cd3ce1e9dc721. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QZK6P2130818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4095a0e99c0ac5799c28dbb47745194a322ab89fd54dcf37610cf30945743c66. 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/QZFZ72251225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39bb37530495ce839b76107445d6c6242b3a6b4b36161c60827f01471b5e1b8. 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/QZDA82237932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacafe26443c1c178a3f03e6952a44551469546322320bddef87647ab0fd1913. 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/QZES92280852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e28ee8e392d4310dbab9e68808a1b87942de6ffcd80293e40ec9b468f21e5c4. 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/QZHNA2266356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e371ec36def3b21ec9b3a0afaf6d3cb54f7ee972f46cc2394b23c1c0e023078. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:48:52Z), 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/QZMEM2287317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81ce25eecf36b434d55f979bf086766b4eeb1afbba789dd6ded34e17bce394f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:20:28Z), 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/QZMEM2211568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b091649f4895ac9fc80ca44db9b525b0d987b79bcb6b6e89c31374e57e64267. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZNWT2227543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcb34bdfbd35433c90c5f449739d61ef2750f378d766b5a34cbfea472ec6192. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFYY2369446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07412baaad8ce9e6eaa11bad81a40e2b8eebebc50052a1bb15f4eb2636313c5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:56:24Z), 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/QZK6P2375535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5b54663b83a281d593e5d01fd4482123951f73f2b6c4b778eff7d1aa1db23f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZRP52319454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d37ee808f5319bbc6be73ff88d7c55c49c05c14eed1f36470eb0abd3acc608. 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/QZTBF2362728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db31dc7e72421b6b0ec72ac1ce5851a933fab2c98e068a62ccc5adc020ce520. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZZ7L2581815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a07c9d49560d6044c00e55a6219328619b95d9293ae002d21a633ed8a0c853. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZZ7X2599779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf019f945b5ed112935efab34ff244b4e66ea47fc57b8607afd79113ada283517. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DELJ82013207.