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 0x0064f17b5aa946c9287e99739127d602b9e8fb4ef6343f1e3aaafaf0c7b90f50. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48444a64-3528-48b3-8304-df414607aee7.json and https://artists.proofprofile.net/proofs/artist/48444a64-3528-48b3-8304-df414607aee7.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 0x6f856ccfea8b1ae80a5aa3e481072def2f6186df93169e8a5b25da8597d4c5a7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRPA32000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269c57e5d593c9ac498b2304952d554a02b9ae24076b6076fe129f2c75938d33. 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/FRPA32000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343908efe80ec7eeb4ffa187e197ad3d96494fc8e9fda45bfb93f78bbf0c3d31. 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/FRPA32000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651d1976676395070c59397eb2a167ed416239142d325577fc3cad085aef03d0. 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/FRPA32000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5538318e00f03fdc5e6122b91ee411ac6bf9cfbe11751b41e9ed9de0ff870072. 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/FRPA31700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651d1976676395070c59397eb2a167ed416239142d325577fc3cad085aef03d0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRPA32000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4dc9838cac0971f1f33df43a69c8d091380a558915e4cc66eb509f3b38aa11. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR1Z41600293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12aadb60e22299d11095f6554d5d2a036e67c6dc57ad79225d59d8a15864d3b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRZ111300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ea2def5d12025764c1f3c0c6a4e58711eb2af5ea1ddcdc927eeef034b422f3. 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/FRZ111300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e79d312bfa34e802a501acc27fe347cddd28db0e7c1a46c16f463d59e94fa5. 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/FRZ111300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a2af9c8678eefc0b7a008cd79cc669a486c7d80fbe4ca0ff2429b6887059f4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRZ111300328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81ad15cabb32b36daf4a9580b362b58c39953ad1e950caa4fcb89954b60bf12. 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/FR9W11505255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522dea3231b191c8086a741eaf0e096cc733658ca6717ad4bd91382ebfa69618. 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/FRPDG1700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42995070a91619fa8d1a27cc1b14564c1dfa8cf573b1dfdcbdf3df38828ded88. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DED621900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3217d7461f82cef563a6b4979afe21fada073f207f393cbe280c05440a6f9ec4. 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/FRUM71600353.