thumb|L-R: Richard Barbee, Arthur Byron, and Margaret Lawrence in the Broadway production of Transplanting Jean (1921) Arthur William Byron (April 3, 1872 – July 16, 1943) was an American actor who pl
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 0xabcd35bf5bb027d61010cbfcbc10fc56e53acf13dc154e589c149f8f3b778033. 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/f1001760-16db-497f-9005-efa2b4e6c1af.json and https://artists.proofprofile.net/proofs/artist/f1001760-16db-497f-9005-efa2b4e6c1af.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 0x9fd6856cfdc53286c219aadf78abdd23114cc8dc7e47cdf8e8d40124d4776318. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:37:33Z), 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/ITS781700239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f09b6002e0573efffb804f0a1b2cc3f7d662271b4b3c89f80fb312243876926. 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/ITS781700241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbde8df97aba53d6805b8734e94285d4791f9d9bc3676a3648aa5bcac6f76cc9. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/ITS781700242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ac9a3b630486f8606f9f86158ffb79482bc0a5370af18038431529e408d6c4. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/ITS781700244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84ff2a74f0f9d80552851ff8a80d328e4ad1d7cae3db278f0096be016555dab. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ITS781700245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb416225df95da89e109be2fa8dc2b336aa9c6b16a6935896593deaae5ddf85. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:57:52Z), 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/ITS781900500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5540f9eb40f83c815e51e59e5d7daefdc1813670464aeb05198459375db1e9c. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:01:08Z), 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/ITS782300232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ef35b39ce5bdc6c5b928c7130924e502caf3dbb3fc103bcb2c92640b8f2404. 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/ITS781901289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc4caf7ef8bd2d53e16d232bb4fc5eb45bc03e680696c3b36a68e6b7831b030. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITS782000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849cb1c5415a87a3daedbb81905fc2767f9fb4438fc11f705bf3895de2d59835. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ITS782100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae089288e2e111b0faea2dc373bba37e957f576b64886abcb1b7e9f9218f494. 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/ITS781901152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f50ecd171ddd823ce5bc27be4f289e9fdf0ab5c5795e6a02f573340a30e3df. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ITS782300783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5f6290bc025087765425260b355cd6af5d905b4cb990805e0a2c69ec2d565c. 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/ITS782400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdef83045fd4f834e66881ccb663f452c97e9fd9b4eab3bd22461f442870775c. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:39:10Z), 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/ITS782400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa96d2f1ee2c83074507a2cb2112efd5ccd58d6630586b4740055d5ca02ead58. 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/ITS782400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8713215bacecefbe976a9c59f54ac8c5140b2e79843fc6aa3663be1d2c828f4a. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/ITS782400580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c07b2ffda1db77a94710569c1314be8f14b4091886553dd583163d5c982b6a9. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:53Z), 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/ITS782401056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae91516d9127127ff955b0371dd59a009aeb18eaf38b5089dd425a381c0e58e3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITS782401276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dfeb93b0e6d19d092031a7fbdf6eda95b2fc881dcdddd10c5e0fa14d27f47d. 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/ITS782401510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ef35b39ce5bdc6c5b928c7130924e502caf3dbb3fc103bcb2c92640b8f2404. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITS781901289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae089288e2e111b0faea2dc373bba37e957f576b64886abcb1b7e9f9218f494. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITS781901152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc4caf7ef8bd2d53e16d232bb4fc5eb45bc03e680696c3b36a68e6b7831b030. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITS782000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dcc034d10af2e4a0fb4785b70b3c986895cacc2a9082470e15422f2b1e496d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITS782000066.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b01b046c121268535455771e90709269d0c41fb5cdbb65d98c06f6b3fde58d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITS781700347.