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 0xd598e44d1e3d33b6924b0f7106fcf450b063381fd076f588b89350eb9813daef. 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/9bceb753-f484-4366-bfcf-58191373be07.json and https://artists.proofprofile.net/proofs/artist/9bceb753-f484-4366-bfcf-58191373be07.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 0x8529c00aac29b514a3781bfe4ab3c7ab2a5ed93f337882c590e9ff12d5697a4e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFMF2232265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d365908240a9a6e39cc4b94280cea9baf8cc6c45b2a7f9a5dd40f8baf90edf5. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:48:34Z), 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/QMFMF2232266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18604799038392eea52c84bea73cc74a6fa9065b84d4c545ad28c30bc9cf761f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QMFMF2232267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8309da0c2e4f9a15da4d999c69003423cff8b2d75396945b24fe24d5797c4a. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QMFMF2232268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314e67158ea3cce7fee344a7094690068dd4512f02229b98bb9773e27c86f39e. 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/CAENV2063430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f66ffaad96748dfa0396b30166575095ce7dd873c59a1fc17cb5a09ede21ca. 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/CAGOO2069715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bedf469ef086ac034e41ffe1f825621cd1c11b71ab212ab4c236e52f9d752c. 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/CAGOO2069711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2881146410ad8708c1a2b538384b8864687a15d4af49167160a2499ef575dbcf. 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/CAGOO2069713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34346eaf4a16b431279152f4fb58eb36698be660d878d3ea9b94c10d41c2b9ae. 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/CAGOO2069710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd6db6c1951c7c090c1a7673a69e593c2cd598609e00d61b887b061f0bb8ea4. 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/CAGOO2057041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab437641365802cd0de0d1ec1ef5a74ccac9c089e101a761266aee07589288e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:38:23Z), 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/GBKPL2173211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ee18196a3b6c78423a6dba606b61a488e01a43fb98b218a83d5d711d4195ad. 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/GBKPL2173212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78083ffc948520d475a94dcda7e4b030662359c896302330159ccef01a3c9d79. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:48Z), 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/GBKPL2162311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe9246fe36a9a2e4f58f5f036f9efa4c4c33eced86ed94b3916a2693093b2c5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBKPL2164751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe379cd3d010a6710477455148c636ae610d74f85555e5a992745692edb89dcdd. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:55:47Z), 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/GBKPL2173214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc623df3704b21aa959c66b9fa95d6cde801d1c987667fa82e01afdd73e6cd07e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GBKPL2154386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90907d3aef396845ca4198bd343d6e741ffba535313c1a123d95402c14a90dd. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:07:21Z), 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/GBKPL2173215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755a72c4b9ba801c42061ccf8d933de48feb65e4eb5dffa1fb733ec8e2661c2b. 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/GBKPL2172274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78083ffc948520d475a94dcda7e4b030662359c896302330159ccef01a3c9d79. 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/GBKPL2162311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8e8ce3b7df08c10f924f1da04dcbac3123b454e732a8d920bc849a7723d09f. 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/GBKPL2168630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85812d701cd0ea1d18dfaa9e1806bffcb8dabf11338285c0f93b7de327b6da59. 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/GBKPL2172975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2526704b3c6dcebc3761e252a02fb4574cbf8650fab0649975432259fc5bb7a. 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/TCAHL2346399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f0c66395934f96c274f80904419a0a55731d623e76a4d401744441d1e94be3. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/TCAHL2346405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd6db6c1951c7c090c1a7673a69e593c2cd598609e00d61b887b061f0bb8ea4. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/CAGOO2057041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3130c48ebfd526a7b1e4c8e2d502c6b40e0998255572744777cde73ccd7ca3. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/CA5KR2401619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ee18196a3b6c78423a6dba606b61a488e01a43fb98b218a83d5d711d4195ad. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GBKPL2173212.