A reign is the period of a person's or dynasty's occupation of the office of monarch of a nation (e.g., Saudi Arabia, Belgium, Andorra), of a people (e.g., the Franks, the Zulus) or of a spiritual com
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2360a94862a7c34cd4827a6348b51547ad9f729366ae669fc807cc6dcc74e972. 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/513b28e7-fb7b-4370-9e6b-58748c1a38db.json and https://artists.proofprofile.net/proofs/artist/513b28e7-fb7b-4370-9e6b-58748c1a38db.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e581ac185a132f3ea3976d60c69b8f587794561bfe1a785cab27150e0c46ae8. 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/QZFZ31923824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab203d22089c53c0b2e655094e51721ed5f8e5099718997fe0435342810e49c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USUG12101841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fae3cfcdadc003a2dbcd8aee6fac30f2b8f033a2b0aba2349ce4e26494c49f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZNMU2445135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec3c7af8ef0f25679e4f2450a04538f2b24b4f37b355dc42e06da8f230542f2. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZS7J2423815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a87376df2e95c8186c8990afb83a0c03eb5e5d35679e74966d12799a17f294. 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/QZS7J2472975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c63e86e5f5f7993aa2747827ab5d98901560fdb223e78bff00b2be03beb945b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZS7J2462565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074c4f533eb9a44bc0c6c214966e754cbb83124fd56b047a9c50a55b36fc9bbb. 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/QZS7J2419378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eb1700a04f41ae5dec2da76b999f5bd10453facb4f90fe9e3d6c6aaf4ae37c. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZS7J2446788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899d5b601ed3887148257f39afb2ffe853343dce6117cd903e07b5db32c6fb5b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZS7J2409159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bc67830b225621d964b2631b22f7cf96d00fbe0bb716e9a282dd6bb0ac9932. 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/QZS7J2423617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeafb9761bd565cc55ff880b30ebf0d08d87d10d9e1b733bfb50eef35d1c8257. 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/QZS7J2428936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977c75ffa643fe44a0f7b0f666bd68c9a8793c7a371109279a98be3b6071f1a4. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZS7J2426579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dc9ee760d307fda469f13d622c0ec61f441f20bd05c7d4bda40fd66a624a08. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZS7J2472464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5db16c429c33794ff249d23eead18186be3da27c21ea7142c98dfd17f9d9aa. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZS7J2469939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8611f40db7c258a218a2d1dcfecaab20180c9f43cf54d958d06b0ed17c611173. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZS7J2473876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e5ded26f902492337782efd0401006859788ea367174411d6e96739fa84dac. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZS7J2404964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c06ed2a3f69b41642a0a23a78ffe4eca6d209ee3f8e5e590722ee048484b91. 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/QZS7J2413832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec588900ec410cf83e6c29a977f2953f84086e6c7d747560b24bf291b70d7e6. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZQAY2512530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed758e1f6e2369963052b6c6839db7d0fc8dcbc079473c3cc576976f46b4dc6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/CH7811115024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83b66ab6ffb67f98b08fff360a4af2af9e99a0d234f156c94e4ba16be7e28eb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/CH7812536618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc510153bbad2c1f5d8c86a000b727d8a4d0e479fb8b85958e36f37410b9010d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72017947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6e4a005024398074a74a64f2706f0aa35f28cdcc1d244561f19c4cd7e6cfc9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM24S2206381.