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 0x15dec021d8b94329964acd6ab5bacf30ce5388e274d25a51440da71c40d67bf9. 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/03b54163-bb2b-4e8b-a8c0-65e68c88555f.json and https://artists.proofprofile.net/proofs/artist/03b54163-bb2b-4e8b-a8c0-65e68c88555f.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 0xab953e07810da6dd36afa64c774362b9115cc19acbc6cbd7b1acdec7326f350d. 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/JPCO00820850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743ae11a8d7affb5c4b8e7188e26d7acf025c64745c5b5b1a7095ccae3b56812. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/JPCO00820880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7e57a93e4f93a52c4dcb78ce2e3c0a9db89cc506af4276ebf0e9a009e57bb4. 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/JPPO00259720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc4e92242bacde95d8adfb090dfd854f8912dc791c885f93a0d1d3e2b40cb4a. 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/JPPC00903294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25f89f86a8427c14e802304a2d0ed04fc23f95d87807a1e9b85b7917034bfd0. 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/JPC820700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c01458ec448beea20f95713ecec6ef111c725caa75e0df88e0ee95de5491a0e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPC820700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973de646d6bc979059192d01cec3f26e3ed4ed5776efce23c3f168e48d2cc96b. 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/JPPC00301799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444d1612e6c86cfec89d4199c40a8e7c45adf60b1986396802b0cfa08d931fd6. 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/JPPC00301801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a2afc3f7bb62ce97ba94420807933e47aa192c3b28dbb4574ff432774353c4. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/JPPC00301806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5fa1fac31574591773e2e23e03aa8249494e1446f5ce0fcf3305fba390733a. 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/JPPC00301807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086ee516398fd9bd2f06b15ef78010616b01208e1343097881d3b2eaa1d42020. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPPC00301809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eee805dff77bd3812dadabf504ff4cbf927379be1075d93a043888c431fb8b6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPC820700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77e937cdc3f9620923dc916a73b7621c5b8fad18c42f74eb10a404f0938b852. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPC820700109.
満天の星を探そうとも空は見ない
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58de409c05f5c86dcf526b751cad925a6fcb1a69a801cfeb26c71ae41fd0264b. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/JPC820700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94544fc117951967125592bf17c9768aadf9c1a91179614eca53bc88f9dda15e. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/JPC820700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3885c97ac6942cfd537d2ef627ec3a48fb083e132c1939f8b3c82ece924534. 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/JPC820600233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ef128350556ccba1cf10aeaa7d3eb72f4d9c2261d0dbf62f7164f8ef08e5da. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPC820600214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceddacb779245899efdb1ddd8d2100ad01c8cc5f45d9f501f0b93e3e81e4a1bc. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/JPPC00502472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e236acaf2bd21db4b0126deb0ac25dc7badcfeb2b697eae009111f82e3fc6c. 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/JPPC00502476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cce425bc39f6b77d7e2f5cfe8edaa16a4b746c56e197c40df5dded692b8cfd. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPPC00502477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0413e716837f2d0a0e8183fd8f16313abd9f94502492714535ce0dcbb30cb98c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPPC01000486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6765084022567231d247c99a3a65625dcf45ead268dd481d67d11785b4f34c0c. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/JPCO00820940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045b9a044d1d6cd8d437e9f4b91e140aad00f522cc1e2ed95b8fefcc9bae2538. 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/JPTO00301541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76ed31f7bcfe5431570baafe7e86369702c97542326c1246ef9be84d7599c28. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPPC01203310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d61cd7ab8f9d0c05995aab45222d6beda5605298333a83518218f5a247b982. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPC820700097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8fa42d2c011c987cf9a1a18b8979f208d28fd30d2897a04d75e6cf90ec6482. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPPC01302737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c47a342078a18066a1cf5f3d5d93105d0f9deec2cc41a29e9eb86ccbd2f08b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPH941000946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947dad7cfdd88d8a10c114813af4845d8ed1e0f28b82dbf017fdce3ef596a060. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/JPH941000948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd474e82fccccc1592694c0683aada105102b15469335e4e35f4f84e0f06eca91. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:49:31Z), 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/JPR752500161.