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 0x3079a7461569021137a4a0e5af3f4ac6434234937d3bdab23df9dcb94edf82a5. 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/0a4d4111-390d-4865-a49f-a857f336fe2d.json and https://artists.proofprofile.net/proofs/artist/0a4d4111-390d-4865-a49f-a857f336fe2d.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 0x58db6ea3a020bf7929387d4bd45a77bac98be99b649fac551dbe81def8423712. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCADD1774827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15832e7cd119d2706b7b709ccdbdfd8e47f1345fd1a889d4d6b58fd28929df94. 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/TCADD1774833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e659402cd6da10fdcb998c2f348dfe23976223d727203802bd655bc49cba21. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TCADD1774835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b25f4d84fba418a03e11d92fcc9e011c43e645300b1050a75ed31703317b106. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCADD1774837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a0c923122e2ed35df0adb4c50c0cc7635bf31faa51fb54da66366868ad7ced. 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/TCADD1774839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9f67e81a5d19ae88e13cc0222a7bef5de8b17eceb167fa1f8d9e88aa44425b. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCADD1774842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cb487023c6897e74695753079f3cecf45ae04abebcd398723d31783a4d8ad9. 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/TCADD1774844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69b904110d03e18c56c5f9a21bb4774e33a0bc4c525b1456a3304de359dfffb. 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/TCADS1889745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2b6e7f51a0b9261a455387e699b7deb8602c1c104d766cf70cb267933ab19c. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCADY1875312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a46fe406eb1edd21372100b99555946c72bdbdc5c2a2a0550fc24fff219cafd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAEC1972833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67eb98ff24be30ab4a7db6725e6f147615da3a76ac2c5f3769875a90d86a5f64. 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/TCAEG1957546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838bbaa086fbe2e2740fa2991a1bfe714971793562b07a40649390661eb88ce5. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAEL1937054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd1eb12c176b850e828c32889fcbeccb5a2a0282aed310e510a7614d3dc2168. 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/TCAER2033233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3c0add38adc6052aa76753664e0f5fb583813f68acd79839c6c7552fbc89f5. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAEW2030421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f453e1d1ae37fdc68d1107b2cb19af6fa6423c7b38798fb6fe33829d2a4b7c4. 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/TCAFC2048395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160c1927d4f86dc83f2ef5dc15145667bcab27db16136ae897391048402cfab2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAGF2216136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e336817a4103c1e9cada32f1b9d1cf6641d2753753d11aaa15527b04bcf330. 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/TCAHF2327499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12396993ee1ffd627f0ecb879b1d2f8c08cc7ddcee9e0594e5cc8e8540dec14. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAHR2308146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb977d8befbd122cef126ad8212fd857934b35a1adbaeacffd9d88d7fe5460c53. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/TCAHZ2474467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59281f2d9eb4503cc584a181274fb03a22d63aef9d3be3aa1b2e0b436429a81d. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TCAJX2558301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bed11f21a1f1c81478c2591f124f41446c5e83f719f90f2c6df74bc410ebda0. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAJX2558306.