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 0x432ce2a7d0e086cfc1e519e74ac70d65a03b62ce9d1b464b55e78c5e78327cea. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3af17217-59cf-43be-ba89-e87d67090cb6.json and https://artists.proofprofile.net/proofs/artist/3af17217-59cf-43be-ba89-e87d67090cb6.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 0x4fd9460a62866493999bcf20df54d5e1edc24540e055a930828d1b212633cdd2. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZNWS2091114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03528763aef191d07925bd9b78a3d8900cd24e8fb34890d82849ec8896c32bff. 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/USA2P2208921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb406df1d8a9de5e5b5a005f06b8a6865d549f64660bdac9e7681cdb415684020. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZDA62152500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb198d37f42f8f1a266831bbcbbb3960d6fb44467fdbca655c890a7ac7e102b45. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:16Z), 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/QM4TX2357145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe0af961f2c11398e627071b2c475f247f181eebde699d0979a201ccf9e7ab5. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:24:55Z), 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/QMFME2337518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1644c329049b4d457f49e41b5abf6cda1c33b36955af81ecbe1bce861f5fb9e6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM4TW2439283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670e9feff2dd3ebb2c6426e09720dd96488216da1536ae449b49f89c394ccfb2. 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/QM6P42443549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eecd1ca87c929d9f22da8b3c25c449c79b672527583fe193e6135f62d662d8a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QM7282421769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4232d848171ad61c459124399d076c70a5759f018dafffdec75d7ab3b11d217. 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/QMBZ92474816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af189910390f637773c02b5cbb2ee02a8918931b96ea2839cca1a4b673ea8ae. 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/QMDA72431466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda39a7a545b99eeca8b104abf0733603a6df60b46c90a064801a8a30a4edbdf7. 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/QMDA72431468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90717fa62dd92b247a21b9f7b5dd4e4b9cb9681fdd39e4a21c9fb5ec5c8b0eb0. 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/QMDA72473799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3380313e2ae9894449086d49cccac0602cb962a08c1db77290b099a78f7bca. 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/QMFME2474271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ef0ca1198d7adcc5feca16d362593d2c14fac0ffb06f7ae254ded2b710f3f1. 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/QMFME2474274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff9d7e7af07f7eb8c20074590ee2af2d499250d1cf02de3be071cdfbcc1d5e5. 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/QMFME2474275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b610089095420ee69052daf54a389ec2a644241261903f9582ca82c3aa9738. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFME2440317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a49d665575cfc46e5d5ab8805e5efaf00a275b0d5dc4f1adbf34f239fb09294. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMF2453076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b610089095420ee69052daf54a389ec2a644241261903f9582ca82c3aa9738. 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/QMFME2440317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acdaee1c3f79b7fce6d54731a6d3096866736cb7cde3cf1280197f55268229b. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QMFMF2453082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f94c7ac79487f271a2c27960a79fa392027bcfb34c1af82a98200eb9887e18. 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/QMFMF2453081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af189910390f637773c02b5cbb2ee02a8918931b96ea2839cca1a4b673ea8ae. 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/QMDA72431466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190c78161d038550bb5bd7cee6c007b493a603caec1adecbd41a992077ff4d97. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:12Z), 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/QMFMF2453083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dd9789c0963a827ce9c6154ac6e4e3dd5b685f86f134387d76a7ef641532f0. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QMFMF2453084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4232d848171ad61c459124399d076c70a5759f018dafffdec75d7ab3b11d217. 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/QMBZ92474816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60764d4cd8258f32580419e78816f5a6cd948a3f9cf296842eed946480ecb161. 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/QMFMF2448532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670e9feff2dd3ebb2c6426e09720dd96488216da1536ae449b49f89c394ccfb2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM6P42443549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ccde04725d5f4bc7e94b54c5fc0a179e0d0e1768b6d88b30656d90f8c9dd71. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QMFMF2453085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337dd8ecc5948055178c14f560091c71c3dfae05cd3fc7f93d52ce35c381fcf5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMFMF2453086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473d4cc6e492098fbee0e88a4d4752cd41100c714d068d7f7c517253dce792f0. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QM7282487782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c39ac1fa2fc14d468c58ffff4f85ef8a25e7e8fbc90829af32a1e7fdbb75801. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QMFME2516191.