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 0x1ee63f02a9f7e09a4b7695bf049838ab24a89697214be0b021114cbf73238004. 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/a84ebc7f-4771-4925-ac0d-3f648d391ee6.json and https://artists.proofprofile.net/proofs/artist/a84ebc7f-4771-4925-ac0d-3f648d391ee6.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 0xe8900f7a0fc54f52c732942774f385e0d82509a7dc320aee1486b50a99c46cdd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2406315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e270dd4646a44b6332395d790fd219a3d6ada7dbec7b67c6713c0fa87d2fb4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2377998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3622fd23201f50a5361a07aa65e47bc9c6ffa7bbc52ee4224b4e16abc0819d. 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/CA5KR2358277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039038b01ec3a7c78ee984f63efa46b7616a6a856622df144f7f9c2571ce14c5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2322597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee29ec157723fe73ed53d5e5fc780833ea2252647ea806348ccf4f2317bb5b9. 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/CA5KR2322598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe6b44fc74dd3b5d85ae945f53c5d5e29db9ffbc31bf7d9432a2934d951b6a8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2322599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94f62ccb98c71ee85dbe5c655c60d7ded594401d5fd27daf249953cd01ca7b3. 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/CA5KR0040073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa167e51b813e26eaf7b66815174894c6f42bfd8facd17f9ac6e3d86e3bdd228. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2301194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a265e3dccbf505c7af8ed01885acf51d462240c12028e7515ae927edb87a4a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2322600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f82b1e861d78ccfc6242494321e81e61836028b79232018cf95b6de1a2f3bb1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2322601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8533b7f4ceea754c68e2ba543d12edffc91f9b4e0daca39889c35efec7e7ce8b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2322602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1276c76cde4889340133b182f3ff85c3dba33dd73ace6c472e07f31bc115d407. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2304008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa167e51b813e26eaf7b66815174894c6f42bfd8facd17f9ac6e3d86e3bdd228. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2301194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc387b3b6d1082adf4588af838fe3044c2bd3f5c272fafef9ac4b77ab4cca840. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2263093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e94c099667813180084da422dae272354bc93c7c8a7bd6942a2ab86b69fe4c9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2249487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc198e3a77f845a45c081bd2f6fa56bf0ce71fea14126303ae858ca2cfce0b895. 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/CA5KR2229377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad493d877d7c44c01858b923de8bea18e8b36f5251b5148b54d1e2b60ae864c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA5KR2207998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94f62ccb98c71ee85dbe5c655c60d7ded594401d5fd27daf249953cd01ca7b3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA5KR0040073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046c9600567744b03be84ba918b0ab72abb2face7ec7c776c0adb0e497431735. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR0022083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6f3ece2c3a11698543c89a9b9cbc659b762b43fe9fb6d81bda7c94834bddca. 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/QZS7J2110164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4a68d7e310436e7cfa419eb72c1ac3490477759bcf2c6a89647f0457bc95cb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS7J2197912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e546992ab59c835468945b91904249b225cb87bdd5645b785eca2ed2a3b60b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS7J2108268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31b5716962c4cf8b38639e9cf84421f2fbed632188736ac1e5584aa1d2c1899. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZQAY2139931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3d46a1c146b8b14542de9e18606d7bbdaebbb0f47c255a4246ba22637578b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN62141177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5314faa8084e16d77b417ee04b6f9a4d08f2e18580d2906f1dd99ebb2e1895da. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES62156954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1db40f1f4688dea5882228d33e9bb42235c15ef9fbaa5ddcd4cb76eb48524e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA52158181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06da0a955dae698a093548b70fd83c58cb5b3a7bce916d1e76e062045b99a94. 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/QZPLS2005502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52e569a5181b0dd93b8f13b83976c9a13e2a46b72682cc69db791af8dc76a96. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZMEN2092272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcb5d4d795620a80a873ebd9131d1a7a215ac84d671d3e1eb37bf2efb85b338. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6N2054848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5751144c0c9739aa4397597a871b07a0e6deb48ee839b4f96dc0fb9ae8abd6a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN62034136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fcde2eaecc6ada11fe1e3572a6a8c2780a2f6e398d28ffa119b537afa8d3d1. 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/QZES82052111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeff9cce2e8cb9c646afe064e7554027dfaea8dff3f81d5d062d43988d72920d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA72008973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01d18070331577de9180895ada4bd601f320a2d33afc651c007263d970fd0cb. 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/QZFZ72016263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe270d7ea49f4bb69bf5d87f065a4eb9b530aca3275be71462c9c9c5224a272c7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFZ22052905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3613b5781458cc42fdfd4a1cb38048b4d4a3f3817c8179492967756df2555ffc. 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/QZK6Q1903630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c87e2b97936c79db4b5ea7d9999bc41cc1d6497c07b6d3230943cf22b6bdbf6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN41912670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7031565b94ffba09c7424fb951813e057f798f0ab356fbebc50eb03a9807e2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ31970436.