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 0x11633cafcc3e3d17c8790f38e70c5fd087caf70e2bc496eebc3fdbcde80c223d. 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/57cb1bc0-9d07-4d80-9648-1749d1af224f.json and https://artists.proofprofile.net/proofs/artist/57cb1bc0-9d07-4d80-9648-1749d1af224f.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 0x161b58b653ffd49263237157a9377e43f5298eae5a27c53317b67b410036186c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR9W12040701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91df983415038ad303032822eb1abbda7c72cdc94a012817443fba01f8350fb. 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/FR9W12301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb25e41033941bc7e7ce894e2b4206da9b7c961481e18d0f007cdeb2c302cd3. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FR9W12439504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b2eeb29519d54901e7bc896d5b21e2fa0211f3e476b01a6dc9ed419b9e15f1. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:08:22Z), 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/FR9W12439508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91df983415038ad303032822eb1abbda7c72cdc94a012817443fba01f8350fb. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR9W12301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb25e41033941bc7e7ce894e2b4206da9b7c961481e18d0f007cdeb2c302cd3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FR9W12439504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa0af584b373c7887546863dcd4b7c094107f3ee848637cafc05a91bcbffa79. 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/FR9W12439505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331f46ff537c0e02de794e8ec4869d128490c6ae7a9494540d4ca9e6a9dea6dc. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FR9W12439506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa840b84d84376a4a6969ccfc119baf79f15f319f3371b11170a77d630cbd64f0. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR9W12439507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b2eeb29519d54901e7bc896d5b21e2fa0211f3e476b01a6dc9ed419b9e15f1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR9W12439508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cfbb19526a73e434379a29c1a7f320cf0ddd91f724d2dd7a88116958b3b459. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRIDO2314076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381d4ce6dde3d684925f561add8e1ca8e98fea84513da46df5356f2e0c9b4cd6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRR642500008.