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 0x6ab420dcb0b9fe1e6a7d9e96ce8e72c47684e3ea11ba811a24b3f9ab0c52eddf. 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/be015c49-1a0a-4ccd-8520-b2eac4edcc2c.json and https://artists.proofprofile.net/proofs/artist/be015c49-1a0a-4ccd-8520-b2eac4edcc2c.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 0x3ef5b5351da352dfb1787eed9a2ed84412f4cba46a28b73104d05c41cd987d68. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FIWMA2000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d5c7c937f0f10b67936989e4a0e259a57396fb0099365e36f35ab0c3f544de. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FIWMA2000241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3babf23adb5e8430fa58eaed3a1063470c93009e1db605d2ddd1096517afae71. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FIWMA2100223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7061bcedee90006fc2df7c887a5d9652ecaccf87e17a3c0074230d58fb651bc1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FIWMA2100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4479cba59b87278f067470c1fd0e428dc07d1fee71f58e131c9a7e022938e0b3. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FIWMA2200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c865959c24220d9998028215ebbfeebee93aa00906bba1ea189c232c46c09e. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FI9PF2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b5e15fc9ff843e4026dbaafecdbd6f81cf6d13f6e0dbf17b855cec7a023d21. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/FI9PF2400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbc485364b1bac80a96be7919e562084e519959a864177397bb90b84eac9606. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FI9PF2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294aa1f56a2f732c0d29214def1c2de818731b074ca3d50b0536c43eca7c66a2. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/FI9PF2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2bb8a3beb93d4709ce7b7669081c8c0d84c3c503e6792323a290269b9d1cac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FI9PF2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1b462f71923085224be8ca3951c6ff5d4dee75101343caf2221d6494d2628e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FI9PF2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd429480e42af988ec7bfa12473e0f034e45782ac9655750921e0a9015011f3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FI9PF2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cb0d3cc3cec80d6ad6051460906b68083b6863bd12a7050323eb201e1d03f6. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/FI9PF2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b74e9b003c2881928966541d7f1c0377b6951234b80dd5517d240b394173999. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FI9PF2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e39695c5bf67a6f3c56e66bc6adf27f10b11620bd7d9013ce804485d2b87395. 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/FIUM72300157.