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 0xb0b406e9706f72e9a79f7f24af98fa54b3dc1981b69f0b47b865a01096139eae. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c2307c8-1234-4556-b0dc-6d6c6a6fcf95.json and https://artists.proofprofile.net/proofs/artist/1c2307c8-1234-4556-b0dc-6d6c6a6fcf95.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 0x7ca459fe7d6feed98088d45f93ef2b7c4d797e6fd3f295d045b38022d712d84d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKB921700011.
Burning Daylight (Acoustic After-Party Version)
The Unlikely Optimist and His Domestic Adventures
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb481a6ba54113e61df80d7af45eb8fa76f1f0a48b1c805268aad73566a18b771. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USA2B2316052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d63a446aefcb04d5d6989bf3bf88c3b2e32a2cf7d610c42716ff5b5ba86e1c5. 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/USA2B2316053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bc96dceed97109876657a7f67f8c417d3c395d5ee9a7e43af71192b0268f0b. 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/USA2B2316057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aefae6230674c6688938e6d5960406eb8b720a4298b4b20686cf8b4cfe9deb0. 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/USA2B2316058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c56e8053e18df370b3d7dbf576ca3716502803c75f2bcf841866398fc93c1d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCBL2360002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae0daae58e2885c1606f568d02d0a2d38932e658879239d1b889f270a550b31. 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/QM4TW2523275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b4e171c27b51aca7628bcbb5c5259101a6b94b514797bd17128a36783da5f6. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QM4TW2523274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd752840b51070cb5d719a14626177ed552f037122e0aa788225d3edd960fa8f2. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QM4TW2523273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b4e171c27b51aca7628bcbb5c5259101a6b94b514797bd17128a36783da5f6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM4TW2523274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae0daae58e2885c1606f568d02d0a2d38932e658879239d1b889f270a550b31. 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/QM4TW2523275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ea1cd56e6bb4cc4b677ee3fa8522c99eff74d966930bb7db31eb617b3c6f13. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QM4TW2523276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b949387e4475cca2f323b1b4cb267dc91e97f01b1cdb4bd0ac2434bd99ee10d. 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/QM4TW2523277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf04d48039afadf2cbe1f2d5c92bae747c30e88013d65dc07ef5edddf490fb2. 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/QM4TW2523278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc40920b7bc2ce38b94f1ed0db50fc3bce060d3ec2882771eed2b85ddbb1e84. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QM4TW2523279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1c8fcc1bb37b496cd8d5f4bc362f87bbb5960985898d5772ead0eb387bcb96. 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/QM4TW2523280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82b3aae0c8c82b08e3b85951ff1622ba7fd78218bfa45abb5c63476d87ce20b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QM4TW2523281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6f095d0de90f0ce512b292bec7c4125f1d37c972ee6bc756845380f928865c. 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/QM4TW2523282.