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 0xcd2304f99a9a49d93cd39df1b6082d37080fa63902da41860b26856069b6929e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/702fbd47-14db-4cf8-b1a7-a3208b2715d4.json and https://artists.proofprofile.net/proofs/artist/702fbd47-14db-4cf8-b1a7-a3208b2715d4.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 0x55f8421760e5de6644a57ab1d3a6728ce554e41171b96513d6b9dc9e4b817429. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:57:40Z), 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/FIFR51800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ec007bc93a1d294212062b6fa5ae320cdc98f6edcd2c0e0c638ba2a2fd42d0. 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/FIFR51800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e7de7ea341edc43cd449f9194fd298bac2e07fef7aff2593c095539e63d949. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FIFR51800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71049680269d27d26389c6922b6d5b616f911d603a659ec6a61bec282bf23180. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FIFR51800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6f2fe772bfbcdda9ffa0280c5677129de1915e91fd17a5581427fdf673f4bc. 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/FIFR51800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd797c0f470d5fbbbb8a544d6d6bb79f0e8bf6617dc7ac6ad7b46795b60b0b6. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FIFR52000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2adfb823f5991a30ecb3943ca8e432cdb7373167bbabdf53ed65990920fac02. 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/FIFR52000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7484dd40b06670594d6ce39357b94e98d4940462df1d903100e470cf2a243194. 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/FIFR52000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38be476713b058490b3e524fcf73a879a88ef159a94a5c6b1abb699adb104ffe. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FIFR52100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c58dd89e54592d304f5f260e8ec09b7c6e716c30f3d441dfed1453af895311. 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/FIFR52300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000120b949c31a5494ed7c96aecb3a0d8ea90ae19bdcc8932b7e8a075eaa51fb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:27Z), 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/FIFR52300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f916f8c2bb5b3a69dbec616f477e6ea1ef775a1d0813fc9afa6162acb8bb65. 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/FIFR52300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adefb6d5ff55650ce381f4811e5eee6a1abd7ceb8bb0f090d4d114d7a4f3587. 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/FIFR52300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27c9bebad581efcd6d83b6febaa1694fa853571d34ad72bdebfc75b90c9f91b. 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/FIFR52300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fab1798d07313c41e772fb5ada613b6d322247f8278b38a972cee15053b3173. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:18:26Z), 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/FIFR52300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004aff11e67afba60ae3b5aed24778b866cefdaa6cb1dbafe16a9861b2997136. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FIFR52300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bd205fcbc0360d5c71a603c13662f748ed0a0d21852804e759912e0f3df3ab. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FIFR52300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fbe0c132072663f6e0a693714f1a8bd10dc87eec2ae0c272b0959ba278600a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:57:49Z), 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/FIFR52300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582f6038d653458979c1998bfebda1fff00d7b4fc1d906dc05c54cc895d558a2. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FIFR52300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a56370d587fba6b9e2a8fc9f3cb2db954ad63a289dc290cb303fedcce1aca6c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:27Z), 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/FIFR52300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279bb0fcb08d07165c0ba6b0f52bb63443b25086c1213fce2ec2bdcd25b802f8. 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/FIFR52300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5995ad5272438c1d6f968e63feb2df0f5a9c53c580b8c3cc0b45cd6ca924fcae. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:29:02Z), 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/FIFR52300010.