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 0x676f0adc84af54be4f6b311fd15ffd5ba85a4a5567b473159b1d4a3f156012d7. 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/cc8c6cca-5b29-4e26-9303-9f8859613c12.json and https://artists.proofprofile.net/proofs/artist/cc8c6cca-5b29-4e26-9303-9f8859613c12.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 0xd2eafda5f2386485afad0691fccd0cab5f1aa75ff4c99b7e5ce8f680adb6ba7d. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/FR9W12030494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba077ce934613f6b3dffd9addcb0628a0b4fefe162849951c11183dc01296d53. 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/FR9W12030496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff6d0aba25d9803ff6515055e262d9ecd2c09c932ba15faa9b7d8803c65a656. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:57:18Z), 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/FR9W12030497.
Tu sais (Ni derrière moi, Ni dans lciel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982f476ab047bcecbcfbfa1586c46ccea8e7095fe0c25bcf100362e8f58c2879. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:17:14Z), 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/FR9W12030498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99b45cc364a446236ae6cebd40c55b0b2878bae69950d299a4cec5eda87f239. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W12030499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06753a87f67ce2ec9a409900e70869cf6becf882ef172624ba2d1099bd5d2a94. 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/FR9W12030503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf93925bd87773eaa6ad27b88568ba09c7e8505413c03c86c2f00a6db65543fa. 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/FR9W12030504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89a0e824a72806f14932c55f350b3f0003b4f7b1ff71dae1402a8e84c75530e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZES52186642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa167cc4c085ac7a66dbd62da47a529717f32ca96c1b3c6d3c1efc17245e66b3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6P2140245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b787cddb53816899ebe4813830c70744b62b73842c42423d1fb190ec5220ee0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6P2140247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9a9d30941b496b214a525bd524dbb3a07765e56291fa57f875b6a87b60078d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZK6P2140248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac9acd82ffb4cbe849f04341bf1bc5761db7b051e17f01835dbb7c647afff8b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:50:35Z), 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/QZK6P2140251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ef7fa1e03f159845bbe69e0729a1f714d40ab83c9ba9a22e71f5588731fdf8. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:56:06Z), 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/QZNWR2178655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47d289678bc6c8022ef42a0b9e73d21045cfa764565b7ce8ef54b9ec72170de. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZNWR2178656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5318e48d08978cf6bf5b283375485330234230c5698fd27286e8157e538f2310. 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/QZNWR2178657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecce534369e56bc7d08eb61085f1e84d004a0757a30a8d9d225bd115f936d169. 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/QZNWR2178660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aa77beefd7441748700ddc01ee9fb638c83004426809f37818209a5de0236d. 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/QZFYX2283632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247139564671b32249f9fe5621a7e6ababd398bb4ef87d409dd21ae721f8a46f. 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/QZFYX2283633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b62fb8b9a07772cafe32537654c83d4d0a9080824f260913afcc24cf45d648. 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/QZFYX2283634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8016cbaa74fd2d24b500cabcce0ff002bbbd7439f6304108de5f740862310f01. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZFYX2283635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697406931ffe339c3ed21eae7a294a6bd154225e7650cd6ea72d925dc6b9dd3d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:11:45Z), 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/QZFYX2283636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097ed099921e090a99fb088acef58cfa33e3d33d097076d5d08380387d325cbb. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZFYX2283637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef03fc32410ffc33b71d1e303fb0d346cce2ca2265df68e9f93e05cb518cf80. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:09Z), 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/QZFYX2283639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0844742ed32b091444cb0e26d4a4d2add4aed53d0c311ec0d57a402726755ce5. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-22T00:00:19Z), 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/QZFYX2283640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0206129aa619f06e11820c5c73f925ea475f1d5fdc0af1790218de3c60f8e9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFYX2283641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6d6f8cea448ea3fb57c099b24d20b5e8d4ccbb138ad62b6c687c9568a15702. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFYX2283643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642b041cf1187d455d6922ca9fff06d321e821911790613f6c4117c1e21725c7. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZFYX2283644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ed8288327e70f2df243f2a7aece7e12e4edd490054c5cbc1f81ec4f6b3e458. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZFYX2283646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7f5764abc8e81d44a452cf0f1b56811c3484e0608789e3339944741659684a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZFYX2283647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b006cbfaedd6bb8541bee61e2bf76988bdf4d8b49277cffaa4fde838186700e. 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/QZES82296447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f787d6ac3b2254ec7e16695fbe6696562f8e27bf7bfbc940a8090d8509f2ea7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZK6F2290398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a489a6c1b6ddd3e91c513fba5f36c948c4a5ccef608e57d5b1101486ef96a9. 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/QZTAU2265577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7977ab465afea23140ecbcd9e41eb12c3bee3ba7a395c373ab85024b5b2aba. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZFYZ2390050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0239e363580a869c558d5b91b5bc413a4a92d829db7ca664ddb5fea6b4f18673. 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/QZTBC2327758.