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 0xba7f4a7952aa630fdaa5885f4fdd09d5ee31cd4391f856ab90a7b5b687a2c45d. 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/d0045267-0133-4288-a605-d28a1f50fa81.json and https://artists.proofprofile.net/proofs/artist/d0045267-0133-4288-a605-d28a1f50fa81.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 0xfa4cf026014245b9087c38b21d58358e3aa597c29a4ace0e4785e924717db13e. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QM4TW2093825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7c80ca462fee0f5c028ffb02558a5b44feaff67b2f76f7f3e2b266b19cc92f. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:34:23Z), 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/QM4TW2093958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939b3cebad56a984b8272a8adfdfede37144fe3af8e22389a62f8da81566b712. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:28:24Z), 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/ES05I2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb06b55f8bc51898056c24f62f4da5658be2589dab5e880bc6558b81a73fd97e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES05I2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe4de2c268cb037a6de737e21a43363f78ed3bb32eb0aeb57438be3864cc426. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES05I2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8aba3e0f6733ef87bdd08462c7f99f9d41cf9dff7a5912dd37ed550b85e341b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES05I2200024.
Mi Concierto En El Balcón (Edición Especial)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253ab1af032a8c4d048caad2aa971eb4a039ffb47a86b6fad338a23764c75d8e. 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/ES05I2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a9550164b6b5b21cd7a30b7c02d2303226a407205e0d549f7d15c285ffec0e. 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/ES05I2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54146110e4447683b23e217c7c59f2345cdac9c2a70c274847d331d3a1f1468. 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/ES05I2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcdb7fe8614d06abfe092a12e96c5a8249d6af4c618650ae24a19275515520c. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ES05I2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea1214df85b353e5558ed80fd7656698c17950dd87cca54b98c240e8ba33582. 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/ES05I2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e31aa357f5337cc90e9b52970cb14bb32f07c903130f9af7cde2946a901485. 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/ES05I2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6d8e620058abb53e97c55dd5409526d0e7e2e482580ad5949d5d5bb5dab945. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES05I2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0219345030a1ba6ba8ac537112dbe4705f23d79f7e29afa1b1a7f08e72873c54. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:43:45Z), 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/ES05I2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f9199b39099d7f9af2f163c5df9df79b713535477cc670737225d1fc8e036c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/ES05I2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8aba3e0f6733ef87bdd08462c7f99f9d41cf9dff7a5912dd37ed550b85e341b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES05I2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60643b6c9f9fcf20ab6850011bbce60255474f452099f7572a5eafc2994378ac. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES05I2300009.