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 0xb22416e62b580a31e68ad337f798b5f5ca1314c529388329fbd2a250331ff07f. 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/0475d146-756f-4e44-af0f-ab5a08fd77f8.json and https://artists.proofprofile.net/proofs/artist/0475d146-756f-4e44-af0f-ab5a08fd77f8.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 0xc6907c89f9e510b1172baf7eaf29b8e85d535417c9a069757ef7ccda99f9f232. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/JPB602188384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208c1c3191ff3ed1fb85ced11d36271d154c41bb4b2352adf14ca74660d14123. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPB602199534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0a36ae7ea330ff92a6b0985d8993f6ee4970bce506a73f6defe38d2bbed7dd. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/JP92N2200459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e704e2203652c7ea20cc62e1b5376d2ffebfa1f0f8fd6a9324de69162749bb9. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/JP92N2212935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d418b39849c071eaff7f63d6c4d534c6e8adf2ecf1f0a4fb43bdc40d63da28. 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/JP92N2219230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70f269b63b783ab4decd8a4a33727594c7f2a36a9750f00ab16e898035b94fb. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/JP92N2221659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3281582cacb09297172dfc2e3eddf6e37b24492e82013b6f8a8b85909e89d3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:11:41Z), 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/JP92N2221909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dc97fd3b6d9d06b6f79c88b00a60a0adc4e4ef72ad83fc78eced2069def3a9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:13Z), 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/JP92N2233589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c32cc9d85c4adb735eeb4b897c1f57744ee47c75d4f4606bf77c138c27c95e. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/JP92N2236433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8847fc461a9f8a9da78cf0ee8beeac13a9782850065b0c14422d18ff0a67271. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:53Z), 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/JP92N2243915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41460cc81be5239bf974978a2fbf70a3195a9d7078791f41ebd12e41fb9bb53e. 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/JP92N2249852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64599d9c335a449a329bc1da1cc3b86b257e6876efdff4fc0f7f70835e232480. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:11:52Z), 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/JP92N2257172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210bcb84bf3cd59849308fcad5014fe560322cabeb4ecb2c37bcc29155322026. 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/JP92N2264543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0ea287e2bc08adcffe49d93a8a505dc0f69f330b3fedb2ae98642fa7d54b62. 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/JP92N2278021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6560dc25d99022c35bef766c9f8a7320efb7ef8b7a692f842e06d394ea2a3a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JP92N2303464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53c8ba72ef175a941370d1df9f978ba1dd375dd2728fc21dc4c99b8cd00aa96. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/JP92N2312656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdccfec2f8713967f303434d20c752db09294da3469fda7b2314d0624bea56b1. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JP92N2317261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ad6aa014843ac7eac3486a503a748554cf8abc22e197eecba38dab5792c0b7. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/JP92N2335579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3c0a21d3487f3f874c4ba363d9efa1e6d4ed2fdeab60fe31d1e57c1bbb41e4. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:46:07Z), 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/JP92N2339388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a88c1d5d13d96338742fed02b3dd613744dacac510032c4ba845c10496948e9. 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/JP92N2345181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869b39b4f7c98b820dd2881e7be630d386a38733374e6c324999002d54f411e9. 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/JP92N2364529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70021d7b077207ba33fb63324eb7c2f01a81d327a12fc716166235a01b07070. 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/JP92N2369462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9aae96ed95dc40e964292c7a2e30435c44e90302545f9de73ec1900891040ed. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JP92N2380294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400fe3f0b2d8017f0671d5c45b5868a72d2b1f6507bbe4bfce79f7b15b9e48d2. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/JP92N2388647.