Robert Finley (1772 – November 3, 1817) was an American Presbyterian clergyman and educator who is known as one of the founders of the American Colonization Society, which established the settlement o
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 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 0x09a799269351b015f35f7ba31ccedea4cb659ae73ad0d147d284d142eda809ea. 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/58e97d8d-0e09-4680-94f7-bec0638baf9f.json and https://artists.proofprofile.net/proofs/artist/58e97d8d-0e09-4680-94f7-bec0638baf9f.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 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 0x5940f5b5af0d5b8594e42e96c1e5b548e47f87fdce362b5fbebf84d166ba9fd1. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/US2HK1653301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd4a5053542a63ecd3e8d4e1a136323ee903dd5fd12961d9e5d3706de69aaaa. 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/US2HK1653303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6767a2d6de798470dad163b4603d6b77a45d4f299e05c7c33f43dcdfeb5185. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/US2HK1653304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd6ff1174739379875d61cd0ac16b86053412fe235e66cfb87afc374dbd010a. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/US2HK1653306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5939739424915415dc3fdf7b203592231d216de8c6d2c97c8f6dd78c3a58cb31. 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/US2HK1653307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098b85183487479afabf5416d93b43cca4336efb7c46535adf710218243e4b4e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USNO11700433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a18f638434c6a01b0e69bda2f708b97690b0d682934549f370c8c7a78e9cf0c. 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/USNO11700434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf8c7b3527cb3ca29ba5c2f8584581bad67b7b14aaeddf52703d4bd7a151fde. 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/USNO11700437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b40fea5dcdcdfb68cefb52fbaf55b1df7891566c4df5c033cee44dc0028ca14. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USNO11700438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14930c0cea50edee02631aebf2fe0be08eecd45fe81e9c034830ab3c9433999b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/USNO11700439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5a64e48d33f57a23f4a1b101767511b995fa4a5a5017ca3b00b87d35e91ca8. 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/USNO11700440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3994d401a10b92d37b6b4c48562621fe69d1b8c63fe19e972a4874f0dc4f25. 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/USNO11700441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023657ff4796dd216799faa411490e248b0363a9366b2249ec05481c2a8ce074. 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/QZ6SA1700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e7750493231fca79e1b37c8ce3c73d0f965297890a9b046d2bee50e6378e91. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZ6SA2000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a62c641d33b553c55ba71a49335dd0e8f8c5f93bc84a0ff1b6b44ae0fe3473. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZ6SA2000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69777e582722bdc8d1ed9c61bfa64d27d27d01f6b1841dfe1764a97900210c1. 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/USC4R2334848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea44b85cf3b2b2de835031d607bc6c1002d78669d9bd312d9fbbaea6646cb0ed. 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/USC4R2334850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f882d925dbfb4ab8a61c7e51c31c52195abd79e74daed203a5630b32b917a8. 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/USC4R2334847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea44b85cf3b2b2de835031d607bc6c1002d78669d9bd312d9fbbaea6646cb0ed. 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/USC4R2334850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3105e274955636ac4ec2c181847b89c767a4534dc8feab608a7adee06cd2887. 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/USC4R2334843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5791a5a66b2644d61a4e30312603ecdf86731fec8cc2c31783ae111354d0658. 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/USC4R2334845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8ebe9d965791284a50fdc22c83795bfb58e0c680c53541fa2f2c29800b21bd. 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/USC4R2334846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b6b2cedea0bcb66aa40a0ece328015a394e867778b1d942305e715e8fa240e. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/USC4R2334849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7b8ffd74f7e6ff14d7d9f4e4a25ef1f183988517651f11d501fdd478a3d8a2. 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/USC4R2334851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e406a4973e04465545c6f7507726015adb9e23708b2755c177852e00d98bbb. 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/USC4R2556226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636b77bc5ad80d32bc3f27e6916f42a64be0e0948479ca0155af9dcbbd6fb9d1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ6SA2000029.