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 0x552033ce3cd1bbf727cb4f706af7afdff33fa3fac41ea23a0a59438cf52cba71. 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/00af180a-fefb-4081-8b50-0a99c414edb4.json and https://artists.proofprofile.net/proofs/artist/00af180a-fefb-4081-8b50-0a99c414edb4.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 0x32536697845d1102fae5d78778667b1cbe30f2ee16ca513258665220bdcd8b8e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAFA2057210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b48a08da437409033b86c11ce9451fcea06801eced19ba442cb14ab5932a051. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAFA2057214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9a00f9d9d000073d03bcdfc024fda87a392251f1757961b283cd5ad09aa404. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAFD2085806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dff39c6bac8940c1cb506dc02ad8ddd42c209e2245ff027832cecdcf37d6a0. 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/QZMEQ2041173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab460198dd746ddb1d9c9628d4da2c9acb1e2f2d958b05ceaf6822063f54eecd. 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/QZMEQ2041174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a671fbfe59d80941ab74f857810a3fe91c312c483c617b5446f9143af316eca. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWV2181719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ea0dd2f3ae355d3a22c94788389893773443a2bbda1b539f1f73642cffe4cd. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:31Z), 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/QZNWV2181222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f46eea26afa79e097a6caa5e7a21bcb9f63142ec0259c0e99cda46d2b51122f. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZNWV2181720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cfbb2a9fe3ae7581c7aaee0ae5c196277c3c875214d6bde284a41f972e4a1b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWV2181721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf707d2a83d1dcd079f8097868dd68593c69bb0af9114b18ac6a2f3bd304d52. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:57:20Z), 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/QZNWV2181226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caf1eab2772019eba2254146eeff861bf51c5018acad8130ba17b76728ea952. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:03:20Z), 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/QZNWV2181227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fbf0b3eadc8bcaa930f0a9130a1fe9059df35c3e715f196534b57ca3d811ea. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZSR42180968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de6c2c9236d283f6f2127cba466db2f671dd7271beebd91a12174975ee8139f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:16Z), 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/QZMEQ2272395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc95e783e190aa7b8ba53a451bde3423e35a9080d12167c5bf88369581df40a. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZMEQ2272396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc8e1d375979780590969ce23aa697f1f91970ba218b5ad3cd5606b68d79dad. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMEQ2272397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3b7ef76fce41682ee24c24f7089ec68b1fd31c6e36aba577c5a61dc61f8d54. 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/QZMEQ2272399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07747e14ef72e5a9a2c6a7316b3523876a675fc34d6e4916ad60ebd5e8bcde81. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZMEQ2272400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d3e778b34f34337d6dcbf86c8de5b6c1b67f340d5225975d1cf3f4059139b5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAGQ2226170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db355735fbb5801ecf848d0589b8ec00b9b2f0eff7aa1bf8046f40b3309eaa1. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TCAGQ2273606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0324d83d897672fe06dd60231b00a3a19754ab6a375de92ba3f3eb2b3a96c6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAGQ2273618.