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 0x821fb48e7d91d15eaf9b8c909019b6db2b23a9c7c19d8030954ca09b6fc92de3. 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/9f4381fa-23fc-41ab-9e6a-2f088b288294.json and https://artists.proofprofile.net/proofs/artist/9f4381fa-23fc-41ab-9e6a-2f088b288294.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 0xbcd19a56fea05fa3a7b3ab923b1da4bff9df70f8b817ac24c6b2efdeb9565ae0. 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/JPJ900915040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ae8380fd653cb295fc9b52862cda99118d500dfb8a1c69ec43a2d6d366c217. 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/JPJ900915060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dce4cebe97376110508b61d4a529fb695d681503f165958046fc601c5116e8a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPJ900915070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e69712524fc0478a6de4cab7a996db81537544f3a769e0306a399ffcde54cb9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/JPJ900915090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f9d790c0024212a4ac99cffd53cd92520af4a7446abe310f790bf73c09727c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPVI01008350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadf47cce44b0106d5dfdbfb03ab04d7c83b07b8af1d69210bf09e0394aca5d8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPVI01008370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe2736cbc43e06f03db4a9574a0455d4d0623a7270dba6732adbcc93ee886e6. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:50:10Z), 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/JPVI01008380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8321be32e9037f773d970853120291f4cf551584526dfb33b436693a6ecd2b35. 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/JPVI01101020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8157c6cea6bbdc3fd0540900c229f570ded295c5c3bd7fcda68f1efc45afc39. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPVI01103740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a1a09d140d4fc673d429666bf7310c737eb02da971c86447b036135e6eb364. 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/JPVI01103760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7d4c4112634a9a1fc131f6ccbdd60ce7706a5870f08458b498830e3b8de9ab. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/JPVI01103780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4d4846d36e381db294fc36ac3e65307d4caea443cbe0ae62da20f44d768d97. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPVI01202590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555d3da9f1b576bf677b4da950717ed6453fa149b688b9e06746bbbf543237a7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPVI01202600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe342963d74ea21e35711f2747ed85810c698e82736a4a03130cdcd450753ca. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPVI01202620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15abe77461c33eafe6d7e56a372a1066c71ec3113ddc33bf46657b22cc6123d. 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/JPVI01202630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c59053c52891ceaf2004eff87e93041844af7c5a263f7ce001ad151b60125d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPVI01202650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b86948ef2be6f2b92c99f806f87f97250b48bb7bd3b1cd5fd3b76c4956b03e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:02:59Z), 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/JPVI01412370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1f0ddfe4868f258958203d690e3b763fed8d8a052a3bf8e1d8c79b98c750aa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPKI01513700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67e1ba2f0260720d4cf751cbee7a38cfcc38b4459c0913758fdafb9d9dde609. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:48:16Z), 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/JPKI01513701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2906767ee55bdbef281e042dbca3bad113369323ba9548ca33e3e93b205355. 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/JPKI01513702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829cb18264637c405b6cbe0ebc2cbbb7b0e11ece980378fe0fbee1b755395b1c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPKI01513703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175bc4e1dc853af74d8aecfa863b20d445f704c0fe37a9ea40855d11b2e277df. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPKI01613256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899dcce6b32d158f6120dd57e4f8166624bd29d02b1beb4f6f8c1d617cc877f9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPKI01613252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde98d9134aafb8291b4a714bc5f85e413e63097c5fccf643225ebb7b783c1015. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:26:52Z), 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/JPKI01613254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170578508c3d669e642020404797300df2ce61804c23abc2d37b99b3e290c0a2. 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/JPKI01712493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b37c296de4aa3ed365224060ea6c4686d24da10e1806929e9515e4f2bfabc4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPKI01712494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc18930add089c209c37053f42f6d316c7e3b6844ca57df54c002534e6c6e03d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPKI01712496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42154c1af44ab9b421a3d20555ebd6be242788b21301ac5fb8facfec42eee18. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPKI01817669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa625949baf2a2ed2a961bebb22ba8521c8d29d90239d17d5ecafddfd02f5ea. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/JPKI01817671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cc7f18d19232d68564c99bb634036c9d9a3419055f641fa9282e3395c69a96. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPKI01817673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c3e549d9a535e82cb72712fe73e8f8f9337032940840909d6dddef1ea88bbe. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPKI01912904.