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 0xd9ecd2322fdf0c4ad076a2f46ecc06938520622a5ccae9ac2e737b250492555c. 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/e3f0512e-a4ae-4233-b1ff-bd2125c0dc30.json and https://artists.proofprofile.net/proofs/artist/e3f0512e-a4ae-4233-b1ff-bd2125c0dc30.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 0x9baaa09f301ca443560afaa0ca4b1ece069f6056d1045e263c3d806182632673. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZFZ52064495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7942f5c0e5dd6a8d77f8a559325f01aa67a3a5d78708aac9f548b15d6b40a9b8. 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/FIUM72000497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd044327df2ced096886d6406bf6686ed940e6f7c07e6edffb05de1f06adc5b4a. 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/QZDA82285447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46edffa4e12f85413b2d758906dca26c388d35e7f967d7a95ef3cc188cb8019a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHN82239555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8084b7c92ff0d271e6f5e40fee616d6a72e5c1f4a8af6086ea49134f7a39c5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMER2208431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1673470a451dc09becde2756313f603e7dcc72b200c7f7cc95d4520ae11fa2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZRP52240594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da405bc47e20fbdeb509ad2d587ad3df48242cdc8005bd7969d5cdb67d277e7. 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/QZK6N2354273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afd4a11ae0218b59a0652ec4b7a793612370acdf683c10f8f11db733c9f7fdb. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/QZDA62315325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bc1bb03e41030841b169824062cb55e7a2b042fb5b89d8211082d4c06c789f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:40:50Z), 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/QZNWU2332239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6777569b4118cb1180de70a25e645bb5831eddc5748f39a70202f2f0aa7eee. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:53:35Z), 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/QZFZ22301674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff11de36ea503b6ae33ba8689bbea33f470265fc380009d9c09fdacf2f734849. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/QZNWU2332240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e6c12d062986dc13971a5d95d82ed80974c29b55ad71d006b5ef6f05cd73f9. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZHN62364372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc538791653855318c60d1dd05eb1966bfae8073b21aa7d314e0375980e4177fe. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:29Z), 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/QZNWU2332242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c4d78f8685c301f74bd30bee225b1437d483f0a4767eced77901ebb98e5eff. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB72378270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32765e1e081436112abb21d27e035e50b3b260498fced4747440a8e34c1b3426. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:38:09Z), 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/QZWFE2359627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa556ed1685db1a60cdb2f1cc5b716416f41701ddbfc67676b5cb8b0a311ef62b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHN52415885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbd3eb0d870c2cc9523dd6b5be9e897ab3450c7f7b86ed0b04dcb5ee2606ae6. 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/QZMER2498924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4951b38b6bce856f77f5616737150320e0afd85fa6e737f8f9760e86e241e49a. 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/QZTAS2496677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b0af7fe77d696403b8ca873ddd90cd2593265c8e1b9ee908cbd383875f1a2d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWZ2561498.