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 0x78630a220ce0c62f9b31fbb0c590e41aa83cc4d340c5b1757bfd3fac72c1168b. 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/450b7417-1202-40f4-b2bc-a6b8d72ac7cf.json and https://artists.proofprofile.net/proofs/artist/450b7417-1202-40f4-b2bc-a6b8d72ac7cf.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 0xef7a154694de124819ccdd6c2f75f4ab421aa3c9dd285956d563d6d5d51f3cba. 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/FR10S1502047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd44585402dff258c650966d50fb0270bc2df1b969962cb4ebc23a8a32b4181. 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/FR6V82400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30b0b40fe2760306be98c76d8e628ad09a932560adffc5aaf178f5bd331a3e3. 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/FR6V82400226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613a5b14fd06584a417edd6a94128dfd950cf74946e908101444316866bbd66c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V82400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8102400c7e12a3dbfa1d1ee3c144642c451fef83199c01324a6ce2f9c57f31. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/FR6V82400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e97a0d432e194a751a6ed9520cbaf8b5b4bf793f83efb54ab765b3f963c027b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/FR6V82400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd44585402dff258c650966d50fb0270bc2df1b969962cb4ebc23a8a32b4181. 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/FR6V82400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775a12291d6f5fadd3a38f08692c55aaec00019cada003f33c2d10090d0c5412. 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/FR6V82400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30b0b40fe2760306be98c76d8e628ad09a932560adffc5aaf178f5bd331a3e3. 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/FR6V82400226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f51bd6991816062aa160499e997485b9216e78ad8b82b2752a5cad20fd6f30. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FR6V82400228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90011fa4d0bda799ef7a6f3f4914cada8da093b5eb221c36166a1de597cdbfc. 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/FR6V82400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203efd9aa3e240f6c8792ea823bfb104949ad60104203a7f6c208d1bccd1f214. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR59R1999510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da1d20146ede6392160bbd3acd924dc8db23ea7910dd6daa0080c25713c77e6. 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/FR59R1999519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb413cae6997c64664c304ed8efec29ed178f561bcbeab6ca0c1242e693b77f2a. 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/FR59R1999521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aa0ce20b3352dee632fe1b503a82c9fd13b1ea73f7bfffc62d8c746d01a057. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:22:28Z), 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/FR10S1441961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e907b2d0d2c181c2746807ddd6aaab4011cc097540acfc58fe88f94a4e37669. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/FR10S1441966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe7d0fd3ff8212b0c76595ac5aa68a2aba87adffd4f2e0db2d61dd49ae93ed9. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/FR10S1441968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c17c3f6ed245ae916d105a2e2c1043ee654da0a3824001834655d9d506804f8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MYLR11431324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cff1a6df5da9c08388b16045e646d185531313dc32fa0d1d06eee24872da7a. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FR2X41429089.