Carrollton is the name of some places in the United States of America: Carrollton, Alabama Carrollton, Arkansas Carrollton, Georgia Carrollton, Illinois Carrollton, Carroll County, Indiana Carrollton,
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 0xb2db64ec6cab151c1bd6c23043d54f9ae56a61c93225bd1bbc2000b85de91e40. 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/a90ddc7b-828e-4875-8f0d-51aead6ccccc.json and https://artists.proofprofile.net/proofs/artist/a90ddc7b-828e-4875-8f0d-51aead6ccccc.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 0x340e878c8229a223b0988c9a9acd9fb2d1f6d60a87f06fe82f9cc7997cbe8800. 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/US8391400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd05aa12cc4712501bf606578304d1f8487c5d27ccff02cc9b59b6572a12485. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:05:43Z), 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/US8391400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a6ac040163d134e801935b627bbab6765e9cc5b29eccf28164ccd716ca6c9b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:44:23Z), 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/US8391400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2fb7ff5454c2e8cb72112c1ddaa91b1f60d1d012bb5e97a3c15a1ab88aa285. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/US8391400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ffcbf30b0d9fa3a9a91e8b45cc393b67c3e1889372c775362a96199d0987c8. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/US8391500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31722a5b044c514fdbdc80f3bdd40d88f5d9a2511a53dd58c4a142be4817bce9. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/US8391500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629a3d60d16aae15eb09fa22a34816d0a1e357f51b73a396a4ed104df64dd511. 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/US8391500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376905989a5e47be89d0b69274adeca7cccc643dfa32618bad665780a8ddeb10. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:30:39Z), 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/US8391500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf191e6a3c575a79b932b12d191cc4a8d28632b2a1aeaad28be364d65fe5a7a98. 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/US8391700333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90da21e459a07ad83bb18e42eee07f881f58a87e3d2f07f82137bab23c6fb07. 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/US8391700336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f117278bc1a61a0e96468ce26d63dee9175cbac87f1ffd217b0d7a9b0cfd26. 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/US8391700338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5523e8097f28c6aa78b0d205b262c92386d9af28adc151d50813fb4d23be3d96. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/US8391700340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbc8df3e3403f87263b074e2cd2a366c024c24b84c981bbc504b690dc6e243a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/US8391700382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec244496b105fa46d5f8db1952386aafdc7603019d53b4c9351f04e19e8f1383. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:47:50Z), 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/US8391802068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07a73c09f61ab5fa3c8bd83340226162a1486c4b2d38283bac689280a278de1. 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/QZFZ62028855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47ac31f99e84be682a1e4e773e3c501b5d66d8723cb3169e8b93dbdeed9b171. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:53:18Z), 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/QZFZ62028859.