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 0xac1ddc4359671b51140bcd02e7a720957c4ff32974c17c2899af8a9d0014afe3. 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/9fd67787-459d-4ed5-a6e0-6ec084bd0cf0.json and https://artists.proofprofile.net/proofs/artist/9fd67787-459d-4ed5-a6e0-6ec084bd0cf0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Street Education (Method Man Presents Street Life)
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 0xfdd44e4428e87e18a6dd9bd4851a6a103b4d02f242322ba1031b285427522267. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USDPS0610040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04c00c1e5c2f79a1eb39809f7ccbfbd42123057b5a68688da0120e3c74750f5. 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/USDPS0610041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe294ebe196c7fb16749c405349144c34fd09f01eb4194934d5628768169c18fd. 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/QMFME2097738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27605b1256f2715a3f7625a95dcd09a741abc7f59a56852e16d244b54c801027. 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/QZ5AB2058160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94132173e77425df5ae76eb98eb5a958c34a511df62096ae6d1ab82d5870fae. 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/QZ5AB2058170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8583b92cca27587670a6d40b6e58d3ce3aeb2a1a7566f01657e476abb29595f2. 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/QZ5AB2058172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd322a56c90499f5224281cb0611ff7cf9f966fea8aec2d7c95b7a448eaf8c6ea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USTB11500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461eea11e086a6a0dc64348c983cb4bccf1f45dbcbb6c88bf9a8bed7873a42a7. 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/USTB11500270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c13dc96443f6d58d19fd00db85a71b62451f3d26f24df58970a69a1e13ef26. 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/USTB11500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ce814e36db8b7f29768591e3e9c56043616695f2f21a3b42a4df4b9734ca47. 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/USTB11500276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600d78161abec604a0941872fc00e7838c15919675e2efc1f9cbb5c69905e36d. 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/USTB11500279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cfe5646821f3cbfcc27a9404b7cba0f8d54e66d2cde7e9148a95b3a99d1c62. 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/USTB11500299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45af0ff4b6502d8862ab0e5cbf6b274383e0676a3171d0e548923b33cfbd6fe6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USTB11500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850315253ecfc1309b4e662c2a3df5df6ac2513f8d0ad078890806af05033191. 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/USTB11500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa388963b595f0019ccab2aaa62af600e1a6528ae5884bf363e2d509a7502cae2. 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/USTB11500308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e648a83c074da5a0f406208446e7361e1644aef865dd82f776f71382813d509. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USTB11500280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8924cd36542156d14d3a27ddad8afaa6ddbaac52ede2a0c4615fd9f731e70c4c. 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/USDJ29400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dee1a165942117d8caf309ed8d4157b6196e9882b473b0e381108d3fa2efba. 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/USUG11003035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af60833f588a73ac9afd9725ec3f288d11d4b52a3db4b7d46fb5b4919f03118. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USUM70965291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f2922c963c6ba8fbd45bf328294f36b87da6cf0f1cbc42d3b012fe474e270d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUM70607481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1433031f9446b767785de145802be4315b59a6d69bdc2591ac007b6bcc6d1bf0. 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/USUM70607494.