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 0xc4d4b6beca1806bd1b0b9a038ba1ff5c6eb19dc6665b1346200783e66c654751. 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/cc329008-75d4-4c68-b12c-423a7d660fea.json and https://artists.proofprofile.net/proofs/artist/cc329008-75d4-4c68-b12c-423a7d660fea.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 0x559d9c15a53bf6b102a96b43d202d98af5cb1688b304187b7992be21fea968f3. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USDY42056189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f1c6159445893b065cbd52cfa3601b720bb278ea6cb1ef0473534f8b9f348b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:48:51Z), 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/USANG2114988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ed9db9510138e491d59cd36968b6b726fdadb0b15a073292c3b0a0a9d4768d. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/USANG2114989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab71d2b238eccd05696eb98ad24b3e2c01a9fe743e7e7ad0e383de5b5d84abf2. 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/USANG2114990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd47f455a1a933e06a30ae3a6414593df93488fb621d851d9f7e02ae99c54c75. 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/USANG2114991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd617e2d518f892dec3656119177f9f8184131fb7f48a49dadb8bb2b110200443. 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/USANG2114998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e88c5aaaac0f7e51892da6c157e3b9ced49d8c8e4158a86abf7bb4c3128501f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:18:19Z), 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/USANG2115001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bf3a67d6081cbcb9309077a8456bc01b9746f0e4c1d91271b18455898e973e. 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/USANG2115002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee96dc93d94466a97d46904790ff8b7c599040556884765c5193a5ebb571153. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:19:25Z), 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/USANG2115007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e270754001bdc626376c9b7134af1a731d6d9c166e4ff2baa96dca718c431f7. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/USANG2115017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9d263eba810176b4f7f91b7bc4231841f4101dd348cc99f6c7fec5430ecd28. 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/USANG2115028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3c0aed0acf26d2512e862bdb17cb3ea2de3169bc3c39ad9b024b35860f9454. 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/USANG2115038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cbffc6fc3d347054b6b0237e76d84b065db5a402eace2eefe16a333f5a405c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:01:54Z), 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/USANG2115043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5777ac46ae5f334e4ea1baba8e539b7399f832c3d25b76ae2dfb2624921d0b27. 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/USANG2115044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac230f5667068d92d8b080a6be61c4ce9102eca22f75cec57d228856ec46fedc. 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/USANG2115059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73aa279ec9bc5a33d04b445ca4cb3d7f06c54a53e50162411d4a5c4323d10950. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USANG2114890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2493e99061a10f9f27740b232ebc679ac1dbd3b47bb381f831c33b11699dd353. 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/USANG2114940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1733811acc931a70811a3749b2b0fc2e6e3871a6926effc5b2cb8bb229c39c0c. 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/USANG2114941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6943d4feaa560c674da88611230bb1986cd4dac6c4755e6b5142f49ddda9373. 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/USANG2114943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae7e292f6d199b0a19d8d1f661b0237911c7d6ca97c179fa3c59d3493a9df3c. 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/USANG2114944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08898c89a1bb201c52b4bb242aadb74e3104f4010849d98a69ab409fd98f2468. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:03:55Z), 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/USANG2114947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37055abbbdeab3a11d43a30f8a1848c67207f967ac70cddd4754475b36e54186. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USANG2114949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743a67ac2d790cacd32c6c2144dd7176f9091053a1eb49796b039e5d5f687bbc. 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/USANG2114951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456764d238ba4a91ee87aaea31bda1b83f4dbc5c2fe056e7f861032706155345. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USANG2114953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd200b5340bb6f59230bb1966a999d4889a5cd5a25e964a51cdcc63ff6d2723. 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/USANG2114957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9331a0044d9cbf8ffd718aa2d0212d5716d71faedb970bab9e2dd84a59941b2d. 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/USANG2114960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8bbfdfd88fce9e69cee26cb4bd46c2017383a53964ec2542a1c343f0a7c13e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:43:40Z), 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/USANG2114964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081f918acd1f4c69bdab6ddc8e5cd4774a137c9e67735c8324e222d9f1ce724c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USANG2114967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8923a1ebb9fcafc031a3f9c0a3492cdb19757c07c6df1af7680c65e0e4db32b4. 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/USANG2114970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce89a07c0023a2f70722a5466a49026bf847ba992413f24cb3ca1f13427f1b6. 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/USANG2114972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b448b0f589958056af314339f02ed5502ba0e371451c09fc33b4acbfe1150ba. 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/USANG2114979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9963b2a8c7aefa1602386ac8418ddf26dec8369f72c57c1ce79b893518f0ad26. 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/USANG2114980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782d94c7a066b7a9d99df63aba7cf75d4fab48de79e312d2a5a8de994fe9aad9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:46Z), 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/USANG2114983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a5b51eeaaae94065f68b4b9e3f297665c3c7aa0575a11ea5786ab07bcf55ea. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/USANG2114984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375eb2ad06d88e15766f705304f3ee7210f55489757e8f23436537fc83aeb8a1. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USANG2114985.