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 0x5c854844e59890b1d514f351649be94e27bc73313b089b34d1bd2fa01ce18058. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e2c3bfd-d1d8-4e1c-a086-0d1140dbc1d7.json and https://artists.proofprofile.net/proofs/artist/6e2c3bfd-d1d8-4e1c-a086-0d1140dbc1d7.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 0x32a2e548f4b7b3e10af48c51a1a3c17582194705e8fbbbb5d77fb6e34cbc2575. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:06:42Z), 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/JP92A2203072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f0f38efa0a818ca4b3d2adbad0db5437c55f29825bc393b2ad8468a755964f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JP92A2203075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ce6ac88b6e66c32afc9982ddf887cec1146d36bd0e2fceb8bff76e1089b2be. 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/JPB602058468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23a108f77295dba35182756e3d60aac699f6f835c39a7c3b79327ffab45986f. 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/JPB602058469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf69536c68753d41c44958e19bd56c2fd5c43c512e1adfc01e404f986d5c159. 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/JPB602058470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1197c855ff868d1bca38187a30b426db004bcd3f2fab81627419dba47c39366. 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/JPB602181442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18cfff6254f93575360d440ce834d6054b68d6dbf2a8b7d9020bf95849eee45. 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/JPB602145887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecef48771364ac9ee0dc9612f49a5a78c941ed197928308ea50182bad8e668c. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/JPB602145888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0990e38fe32269e6cb45c3b2bdefb6d743db5417a7a299aad1cb5811e8b2e3. 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/JP92A2211176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46561f1bec5b506d43b34ef42e1814de8f1146ab1b6cb77e6f46466024a3611. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JP92N2314740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a711dc98c32e69102dcac60e798f84b97a1d1a182bf9bdfaab71c1dd36b6375. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/JP92A2317730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0320b139ceee4a0eda153fd8ade2d92ec94ab6ca020974914088f3ac18177d40. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:12:05Z), 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/JP92A2317733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f44b6f4b0ee5b71dd1c6c69dc131d9e1a51ca7a40cefd8cb06690be276f8a1. 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/JP92A2317735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072fbd931d9f0d3fa22524975e0e5dff0b8aa9b35dc49b7064a86665fae389dd. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/JP92A2317736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbaf597505de619bc90874f33514bd7e91e2d0fee8417729cd732833e810390. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/JP92A2422185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146326e781905baf1ccfa9c87a96e71873131b0ddbf85844144fb44ac87f07e7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JP92A2422186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8d7b1bcf7b68f9cd44a658a1bc88cb87812bd735eeda01ec996d00be9ae9b6. 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/JP92A2435110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10af8f5e70c43113f1ba8927e645f038d69b72638a8be06b91c83e7a7d28e368. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPI102501867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42beae694721e1ff1809aa6b587a41d131fcaf97f3d8805a5fa4231bf2160ca3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/JPI102501940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472fbfa0c495f50165e2f7660a86136b1bdbfdb5a0db50ba7bcd35af21fa165a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:34:37Z), 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/JPI102501941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076be938857dd732133b35c05f2ba9d23500020101178094b915721da877be23. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPI102501943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2199e2325b760b98ae04e55e155c5ccf681067d077dd6e8043450000f8c89f46. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPI102501942.