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 0x6d077530757d9fc41fa420a32ae70e633e550d874c4063f05c94653e89ecae7a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a98aa20-c0c3-4d36-a22d-9d86fa5ebf75.json and https://artists.proofprofile.net/proofs/artist/6a98aa20-c0c3-4d36-a22d-9d86fa5ebf75.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 0x1cca0b3da5473301b7ad052e373ee4bd9e8f17e98738a0115f456f814e601f3d. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/GBSMU5957564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9bd5e634251e53ed23f81963764dd4848dd707afe81759b3e7c49ebb9a0e46. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBSMU5957572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b792bec228e7a70c939becd23de31eae95008f8b7ccbf8356c0656dc703678. 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/PLV401900449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78563163fade038cf215516d7fea718d4d48785a57c2a160f5de21b342974b9c. 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/PLUM72000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd545bc473ccb578eba172b2c1ffcb513a72c66538ba100e9af422c8e8cfc38a4. 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/PLA552100621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1c9c53a50c06ed6cb2af1e6e03c112577fd6c9bee8ecfb716b1e2fdbdfd7a4. 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/PLUM72000424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe6f19e69b812629151ab85a7ea9daf30425b5e85e6dae4a61fdf46ef9f58e4. 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/PLF242210788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab09d07366c10bb2a9c26057ccec1e3140caa375eb8dc003d5acda177daa6e09. 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/PLUM72000236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f1fc76706d7227b05dc8042c7ab67216f2a6adc5055c335a505790f0aac830. 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/PLUM72000177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897df72dc2575a0e0cf3c2bd44c13110d5a21002d4c55c1bda9cceecdf45997a. 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/PLC062009423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77d753f4be67f360de3d8a492c0dec3aa998bd344018adc803195aeaa92e901. 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/PLUM72000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54068d51bab169af74cb390f82ef40805aba88116e6c2cdbb055e4141b67d2c. 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/PLUM72000290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614e7b4950cb7a18eb9906897e89feb6782df5c0597367dd0e20bfaf4508ffc3. 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/PLUM71900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11129022edea78cf2788adb6d77aff6309e2c18ccec3bf8999475f9e9ef87ad. 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/PLUM72100751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11129022edea78cf2788adb6d77aff6309e2c18ccec3bf8999475f9e9ef87ad. 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/PLUM72100751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753f27cd94e4dfb044fc015f483a05fc6be17f043894d87ec5e1b00988975222. 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/PLC062416347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d43c0639dceea4901661d93f58c1fdeacc9cb42f82bef401dca02fdc7f0f85. 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/FRX282091033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614e7b4950cb7a18eb9906897e89feb6782df5c0597367dd0e20bfaf4508ffc3. 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/PLUM71900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fb66fd16632140251f6f5a2bd08d4453a9434450af5f185cad3b6fb5038532. 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/PLB382100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fb66fd16632140251f6f5a2bd08d4453a9434450af5f185cad3b6fb5038532. 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/PLB382100066.