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 0x7d441aa701787fe0d9b9a45b32860a22f776202e19512e69c5b55ce8916869e8. 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/51e58277-6ab8-42b1-9abb-9dd804528a2d.json and https://artists.proofprofile.net/proofs/artist/51e58277-6ab8-42b1-9abb-9dd804528a2d.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 0x97b69c74e28b2153311a98a725f66e7ca08f14f56255b7eee697766e6b998669. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812347286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6873ee3ce33c1478a2847f9cfc92c2f09eb5a15ff64bca5c3b3166319c56f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA072121357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc680b54c96f88ed988dba2d73f5951bbc725ed6e6b3733decdcfd947d97148. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR59R2121133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe3117b874f386138ece506914fd9ffaba77e4ea7c7416b4281f3e6ac29ee7f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812347287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8daed6c698d02316181ac00ada591555716a0436baeb50e7d5b8d52cfb03f15. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812342391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fb9b5d59f80ba7ba23d5fa2e2ac6375d5e9cdc18ceaae31e2c88ac39327ea3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022280672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b41402e1df1ec81dfbce99bf3b57abd5c46a60c8a119d0c08cd2ace08033e0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812231699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4744a27c8c1d9e86dc25668973f8000e3428172921ad1f7dca0679a538679f3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812347288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4370c0f749f3dd2e26e98932afe558a01db30b51fdd58be562b3c4c66ac5e4db. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812344855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98944d3080635160e58880d221969ae4a3a629bfbdbaf3ed0d6f5fd3345ec2da. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812226212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef53030076830bf4fe875ebc92c934f5075d8cf728a8a6b97857de2c23ee608. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812346458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773553f76ab09ede726b1100f3fcdd5d02969887badb24756f55e2c1ffe009dd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812347289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dd89bbb378ef64178c9639de8c8aec34a7a4c893c99c104b282319cb51802c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812412693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a4594d5fa279f0262c92d84de6a4745ca89d4f0afd51f76e8dde103e669508. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812410682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d78361c5bce1a29a343a1cccf5fef297936a65b3b28feb2be677abc2793871. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812403900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6962bba5927a4a934e8bd91a40ba75520d0f83cf24d56f6c7b4a9e3ad0cdfe1e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812402288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ae814c266fb530593b003d93436175571ae54c9e1ef436fdaca19ef5742504. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812366312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c3cfb1a77da3f30d3258bd6757ccd9e3772dca07d6b2db1c69880a019b7e9e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812359596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d6619ff8b90512bcfcac3be7630f979b057c6e73f2039cd53a1bd0fcdf6620. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812356706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a74e5c7e2763961cd0384b8ba3c98463b994130c6af1a8b92817050e33ed49. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812350794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef53030076830bf4fe875ebc92c934f5075d8cf728a8a6b97857de2c23ee608. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH7812346458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4370c0f749f3dd2e26e98932afe558a01db30b51fdd58be562b3c4c66ac5e4db. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CH7812344855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8daed6c698d02316181ac00ada591555716a0436baeb50e7d5b8d52cfb03f15. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812342391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b41402e1df1ec81dfbce99bf3b57abd5c46a60c8a119d0c08cd2ace08033e0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812231699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98944d3080635160e58880d221969ae4a3a629bfbdbaf3ed0d6f5fd3345ec2da. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812226212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fb9b5d59f80ba7ba23d5fa2e2ac6375d5e9cdc18ceaae31e2c88ac39327ea3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQ022280672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d5783e84a5bb82364ac36c5e3ff66a6b625ff3a6632151e24200910e9e864. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022151630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9a5745fe84f135b3c84488a22a4915a1f97395a00568c6d346d47a989edb33. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X42177709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6873ee3ce33c1478a2847f9cfc92c2f09eb5a15ff64bca5c3b3166319c56f2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA072121357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b88b8a2dc6790a4e7fc7cda18acfaad4457f7e637f3021505d5361055c6c1a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA052072029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2451aed958ab11c1b4f0e4eba8f20cbc1c0d0b565e6d333ff8b5ade91b3ce6c5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX762094972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c3650cf82211590a324dce4b86c9480f28c5a0c100032505b8cc03f5c750dd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62338737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe231d0ec8b4f67e6fdc1ef452910a45d2108baaebc9adf158314b79d9ba2f86f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZC62142172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87fa41b093403a6d1739aa015b94d4f737d28d82ffa4dc1c81e2433e622228e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEZC62258124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae08149a00fec8a69edc148172ddb4b77494bf6ceb2b0d1a6706eb1859277386. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEZC62272239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e4f58c998f4d53eced6dc722ca5ee31f23f5e2eefdc56ff64a40be512c366f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEZC62338738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2be3d8ea5cc71b5b28b2939950d43a7ae117d85879a231b748141df057ff18f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEZC62338739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f76cb0164d6f038d4b1a28bbcc95b2d28a5a01167360bf6e0cdbfe3e5b2a1b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62338740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff2b397056b954fa6a186ed5633a21625d12bd986f079ab0221e168ced8f133. 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/DEZC62338741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4a2a6b9c05a02db58f539404142c17f19f26baee02253544f1cf9bff9a29bc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62338742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a4a2b87c54c830aebb6978dccf6448a9f6975d25fa30e382f88b1d235ac544. 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/DEZC62338743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab94bf81b26b2d0eb1ade829f13b9ad738abfb47b64372dc12b5b7fc1859fbde. 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/DEZC62338744.