Jigsaw may refer to: Jigsaw (tool), a reciprocating saw that can cut irregular curves Jigsaw puzzle, a tiling puzzle that requires the assembly of interlocking pieces Arts and entertainment Fictio
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 0x49cadae37db525bc235cebea41a4707f37f8881c5b66292297c43f53793b8d69. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ada1fb0-c875-44b5-8c31-e17bf6b5f8be.json and https://artists.proofprofile.net/proofs/artist/2ada1fb0-c875-44b5-8c31-e17bf6b5f8be.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 0x54b60ed5371c5d61a4d075a0bca8ab03273a2dc5865fb9d7e4c464e61483740a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPK1914508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e68bdc209ab17a0e72af5b4a88a3619a5907e8c576b2b47b9f81b16e3da180f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPK1914509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9441ef8eeea9a202289ae59c99e17765f12e2edcc4dded39e84cb2064b777d7d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPK1914514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f3219adaaec5bdaa4e3395be0007fa7886b062cc9b57c1a14353e33dc25136. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/TCJPK1914512.
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 0xc7e1d526693ebd7d6eac05be46961aecd8aee53d7e97632f736550d4caacbe33. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCJPK1904007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be2c04919ed3b9a0b1b304c708858d24380baf99ca4482f4182dbd5e18b593e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPK1904011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf59cf49e94110ccb72b4e5b1dfbac3eb6b9e0a6db9c43ed72a1d6eeb5fce42d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPK2043019.
haikei, bangyarusamakakui~orentokokayowanaika?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc506ddd6733621ceac8a57c6d98dab1f80908f2cea082bbe40f95aa3bd949d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPO2171919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449312d59380901a188c51d287945cd2816eb8a55ba4799c1c58e13ad9e57199. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCJPO2171895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dadc3ebe609070072e4146c455b47ebf1d1af239c993aa16c93a483dd46ba8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCJPP2196475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb36f1a7f60f1c1a746e6db43ebb0d52a1e0a7a9740af2e12b9438a049d3e01. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCJPS2272094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1fe982738f3528fa44278c563e0819b2466ab003cc0e46472b2d0d8f1387d9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCJPV2345553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ecf8bc612d56d3c6e010a85727061e6556f7f02e0a0654fbbe659a3fcec08e. 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/TCJPY2353970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe136c9c8db18f492641d0230bacf67a8ea78643a68a43195abdfcd3002f7836. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCJPB2454538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5782b13a56d1f98f609b9f8084add5ef580d18dda6386fa97e52f93e6b4f992c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCJPE2532134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbba9cc265465cc9d070b43a78f7646969a84d572f21637a8b76d0c08bbb4f33. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:39:55Z), 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/TCJPF2558829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930475505d4b97824ea41966ae504125b29e8b744dd5bffce79ac49a15ca8ef3. 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/TCJPH2572184.