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 0x5136c28676add1416b6bd66303c7f0a891c19eb7acc5b1660454da631d4e288e. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9275ff24-3a78-44ab-851e-66e3847cb0b0.json and https://artists.proofprofile.net/proofs/artist/9275ff24-3a78-44ab-851e-66e3847cb0b0.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 0x8279a6710340ceae286c4facff1e9654a398edbe6f859a1921060111876ce3a8. 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/SGW502515330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306f0ce9d0084512ac1f1b87634ebb0d22e6ffb7f96a58bff4506bb8c6bb80dd. 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/SGW502554239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4f4c1d634b94d47e1a709cc56e00b4782ce61aeb970221d6c48a88259b1734. 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/SGW502538208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3325759abc96b711b74d4691edef00f0f22b9994d9aed93266c5662f69b27bc7. 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/SGW502599950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2553ec9ae7cf04517592b5e63d7bc56daf8dc1eda714958500593b8e75ffc049. 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/SGW502599804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f8d18e69e90c2edcda93aec755038b323a44db356a2c3764b3dfc5d9fab443. 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/SGW502540956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7dec63817823d9148427c1674a7d6729a1fd8903ff4e4b37a2a69845f082b8. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/SGW502571583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3b91b976beeb18b32dfe5643e29f3f519485b36d3867c438154fff88f3e05a. 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/SGW502569359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a9b44ebb931770fa4d7349d0b73d3df32beb85d827bf684b0c1d62d3507bad. 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/SGW502574713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fe45e22aed452a2dd1f5f37223384fbff0d885c940e1ccb60abd422e4e3652. 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/AEA3A2523708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8410bb30f5a4cbd257386384ff9ff31f2706c0111a371fb652a185f9c1bfdfea. 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/AEA3A2577167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cc5b70ccb1c2c7670f872c1598419a65afeab37af0220c18420df971f47fe9. 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/AEA3A2523806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2338ea284877e0d2e3d910b9cabdfec505384d375e531c5e8debcedbf33a3d49. 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/AEA3A2556266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a3d14e21173dc133a2864301b15133b16e8b57587ec96b3273855915e18091. 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/AEA3A2589746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b71b5b8116b98372c11379bbcb0d350d3f0afd3bdebd28235ef6dfdccecacdc. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/AEA3A2576779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720d14056a5824f6ce9522a12aeb0e0cff65cdc3cfb84169247a9a75ce6db56f. 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/AEA3A2563238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b66edb9868316b8700e98750982401e906a81696bceac1d631bf12c46850f1. 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/QT5M32556275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bd3d0914d123d70af3f030dc5eb358bcd612df41787441dad0e0700308f717. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QT5M32511924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8daf4bd6c2ed49ddeff593348c8edca3590605ddb84617b533ae688796d7d43. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:40:24Z), 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/QT5M32500658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7310b76028fefc2784ed916a9d28736fc089cedbc537fc1ee5c497644495de77. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:42:01Z), 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/QT5M32525357.