1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3f2655069be38abc1d03b6cf7c4c1e29f399ff01699be0b9ec30443fc21b5d6c. 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/3485a4c7-8f93-4194-8d40-fa8508ee953c.json and https://artists.proofprofile.net/proofs/artist/3485a4c7-8f93-4194-8d40-fa8508ee953c.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 → block OTSBitcoinBlock must exist at that height 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 0x3d50564dfd6bcf1f5d405acdba048835c65569bbebc7c8196731538676f39cba. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DEPA50661502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e07ea5cd020c657681a0cdb2209941e3a085deb0d445792dd26f669dc08374. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEPA50661508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f85bca3cc01e4752268d9f1178066fbe613163376b9dc68a803854ac4230fa. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEPA50661511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895500f615a88f33cd4ecff478cc8f6d1445eb5feaef4516008708513e09436c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEPA50661513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3565f3abe7c1866ac2142bd3e2507fdea50b9a5630320ea198112368f5ee651. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/DEPA50661515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6d6c719bf8c99edf6d978724ee7f9b8b28b6ebea5c30b553e41e39172e6023. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEPA50661516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a31262608a9ea96fca95dc2647ffc97d7f4857131730a8b702f92d449adcd4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEPA51491602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066a56acdb0d304db33b24a35142e49e4cd50c7e314ff6521c05a65afc27904b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DEPA51491603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4ca0c1f34e98225478eb3fe44956d3e7e3c26a931592f4ec918a29b4e72705. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:02Z), 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/DEPA51491604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247fe0cd860314a78b30d157cb41b3bf9fd751ec80131ece4ba78fc4db855fa8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEPA51491605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4680a749f965c488935c713c046f423638ee354a407f032cf13cbdcb4263ba. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DEPA51491606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517d1f3884b0c20d5edf9e6a1e2706177211604dd35b1f46643ed5ec18a383fb. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DEPA51491608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb4f009a52bf0c48c7c4be98e92e23e23a681c96a5487b6e2ee7918845b7e00. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEPA51491611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d747b2528c9a8493a4900d45e25b9bf8961946495e57e834aba4deb7220b58e. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/DEPA51491614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd17f3790d927aed78afe6c44cfbbf8fee5eca6923d97fe457ad77a4474882b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEPA51491615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34e83bf6212a9142533525a340a8950e7b279296033b15a29a613d130a9fc1f. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DEPA51491617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772a4af27e592b98c68c2639992ff81e387f4bc5f4b33ceb41eef47a3b20a91b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:38:44Z), 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/DEPA51491618.