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 0xa68dee65bbdc688c3ed01e4734d24ef335940401e1001886894e978d2b718d9e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77baa040-38eb-49b7-83a8-83e035b1740d.json and https://artists.proofprofile.net/proofs/artist/77baa040-38eb-49b7-83a8-83e035b1740d.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 0xa523b6d63f1a5193e7e325bcaaad8046a0581075277c121e14dab2a76630cdbb. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:04:39Z), 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/GBBYB0500632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51a2d48fd0ec079bdac069fbaff932045ef0ea1c6230d071d44e66caf1d607c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:36:31Z), 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/GBBYB0500634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868f6b436b58bd79403481324a47d49ca0da5790641d044b2879aeccefe3634d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBBYB0500637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0adcd4bffaaa94dc07de3158bb634d77136ae9b16943e8bec616df45621df85. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:26Z), 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/DEZ650813400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6aa6e258664636a162e76b52398e14eea1698a55cb0db799d298d2c02c70327. 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/DEZ650813358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434c0a68d7b8841965cc80b23bc75af24b6f19e77372fd4e2a2e076c523cdb55. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEZ650813392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf433ae79d53ccba2910328476ed8ca0a4406c7c56a3ad9a39f0bf104dfd50d3b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:27:27Z), 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/DEZ650813368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5235d7a7a2ce03b182a7af15e2ad92f2a4e901be3fd2c3efd5c093b2c3f5fb37. 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/DEZ650813370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a28a6b9052d7247760776a8d19aafe03830dc15b2d2d66ff6d4e082260da9ef. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/DEZ650813371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bc6d2159603215f6c7831b6cec7e00d2f1255e80f3d5f6f806f435b1babbed. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/DEZ650906458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f8948eb0e2534d9fdfe87ebb6a827f94ba6868ca97cb3c3673eb7def154a4f. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/NLRD51961150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51d395ccf3b548941d3023f439147487a62e20dc454046c446703eadd285b37. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USQY51296315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa181d43220df92d40a8ba065e73c5dcc66d12cd1009211a321c7fcb0566a97c1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UKACT1941215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37274af57e44988d26713299077089752ef0dfea25429bae38f7843671261aa4. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:27:32Z), 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/GBKQU2193981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43f64e55904c3eeafb8e4ea61b70f33706a02d9c6f2afbc34e7d479116926f2. 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/GBLV62213053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98b50af350f1b89bcd5a163b200df2110aa1e766ef2afe426c6c527489a7522. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBL61097186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd839067ce7015c64452085b117f81e1e5ba13cd30e6b6d4e64e091bf9b81eb3a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USQY51057903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139682d7a9fe6e33ae6022d2869ed079e2da95777bd88e3e4079d759b3df9ffa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARQIW2416525.