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 0xe3b93ff064fa6993e682a4d3a53897d515b55116352b2f4212514eff6d1bcd85. 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/153a54f6-2c1f-4957-a560-f8f25cb08853.json and https://artists.proofprofile.net/proofs/artist/153a54f6-2c1f-4957-a560-f8f25cb08853.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 0x3aa6c16ea198d16bdd08047f07959b02c7df319ceb32f8ff5bc564e5e58be10f. 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/FR2X42311889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c14e9150f00ad4f1cf0a54e6fe93fb30793a7f8b4a019b68d117631d172d48. 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/FR2X42311890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac691022b304c04955ffab0806f54bb769e95e257ff46ab15da598a1f415610. 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/FR2X42311891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057fe43204019117bd33354a1b52cdeadd10492d35caf41da3e985cb1d603334. 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/FR2X42311892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb132280ab6384c216c8973435e428053988672f28db5a1b95d1f5e2b4cf349d1. 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/FR2X42311893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7971d84d2e2b80521b02bd3b63de757bef26aaff336a69a660b25d7ea6a736aa. 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/FR2X42311894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe291639594eb6e4210a1d60c9cbb96d60d40a1108f37237744b0d1a1bbcc075. 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/FR2X42311895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e548e825a02402425be08e3206edc069b2021ec8528b242d36edb2b80c36e56. 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/FR2X42311896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e250a330dd47ded32939f37030256d2ee4f82c4cb0782e640c4220ce8a6dc01. 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/FR2X42311897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dd66daa0bf4a375c21bb14da9c92cbc537ac90d726f6cf7248b6b2fdd86d65. 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/FR2X42311898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac00f781c78b43da7a66fded8f5b0636291bb0e300d1a6e0931b547274854f4b. 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/DGA082464996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf6536d1559fb3fbc194de394fa5ec9dca44b7a30737ca40bb2fc4aa10e2310. 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/FRX452420977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa58119f3f75c5ec8dee550c2ea5e6bc1204330b4c44aef1213d554a964c1e2. 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/FRX452420978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0140afae2d72dd5d0d47d9ad0ce48b1c35051d78f38bb7dd3f6ed4ef12baec79. 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/FRX452420979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86bf2db58e289788453cba9c5cbf704bce3f663002bf6d25ccb0f63b0699836. 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/FRX452420980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69fa0cde51b998090f5e0516ef3d7e7e9abe5c20c6ad46e68e200cd2aefe2cc. 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/FRX452420981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3593688730fb415c9114f773295a361f31a6be7dae3d628e0c8462b42428cc1d. 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/DGA0Q2326903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be6587699400490b2f486f7ace431e83c8eacd5a3936ce79c226da1a9ad23aa. 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/DGA0Q2326904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ec78e22f79f1ca2cbf47bfdb06951de00b3ccde00ee19039e85b068b847271. 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/DGA0Q2326905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489539dc337e9bd76b0a2caa524aa406894b1b8f4e2720ee6c58d2638fcc272d. 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/DGA0Q2326906.