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 0xe455d54c394803caddbd52c45990e1d65ee0fa04def10507f72d3418fe393572. 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/42891f65-5562-48b0-b215-19d73a5bc39d.json and https://artists.proofprofile.net/proofs/artist/42891f65-5562-48b0-b215-19d73a5bc39d.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 0x5e465e575dea47cb01dc78a83b353682f613a2e1dcd44d61184771608e2b9560. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6I32121804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b4078c4bd7aabceac9ecacc6784971e6783195f17745bd9534d86f26b2c7d4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6HN2233347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9324b551f7a12063a2f15098b8b27884fe1a398e7320db491d755cba40a7c72b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6I32183931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1f0796fb63dd8b1398dd4fcb61b0ce6e7302a3a92a9abde75b98544dc36f86. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM7282465279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319e1c2d6a675a7f253bf26fb8373dc60b896a5f6c97e1209f3f436c7937efe2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6MZ2473037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a362f55a7665fd1dbc16c1d87d5dc182dab900043074c2c28d268b93d5ce955. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX2436099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3b57e9578acc90665bf6659a43a4d25d04d25544b4969427ed96abe5baff5d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX2404628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9b83ab43f6ac4a6ab65d26f321f9f6bde949c6e483b664760496aac84afc5b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TW2434496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6533bcd5910a30f1ae92655544d4ac54465826fbaae9a4a8bd0004d0898dd1bc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFMG2304890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a74bb1dc7193ce7e61a7ff372873881425dc1ebf3983f703b36381b8e5c06f0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INUM72300637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3cb2a19899f0cb230f049a238b072fdb9021323a16a3f556efa2d66eb6652c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INUM72300956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd9c4d7d39cb8bc30b0f10b3c4b5bba37207fe07c4269633b32d0873b9508e1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INUM72300432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58b2bd80fb86ed7f2d59d0727301cca6fafabfa6627430a6dabb6c8f61bfa92. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INUM72302881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58b2bd80fb86ed7f2d59d0727301cca6fafabfa6627430a6dabb6c8f61bfa92. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/INUM72302881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd9c4d7d39cb8bc30b0f10b3c4b5bba37207fe07c4269633b32d0873b9508e1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INUM72300432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3cb2a19899f0cb230f049a238b072fdb9021323a16a3f556efa2d66eb6652c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INUM72300956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a74bb1dc7193ce7e61a7ff372873881425dc1ebf3983f703b36381b8e5c06f0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INUM72300637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc066146778f0e16932f37af771cde205f9bfb085680a006854e9445a9d566eed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM7282336615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ecd57fd5d2ba1051c28d380f9e8d6afbcf20086d5ae8d6c9d2e0e13f4edeca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW2387424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9489b8cec60818db81ff36ff71229171320f8718533ea66fb2e6099d2ec557. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TW2322094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3b619e4dbce4e159618aee428bace8b1b6fc9dc276054dbe3a87d010da8ec8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TW2302806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c641f6e96f815dfbc0e92e5e172a695cada1c3051e2418ca73abd62cc01c5e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMDA72226545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8edf9f056f9cd84692bed6a69fdf721bc681d44d434bfac09333b2bd35190b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92290968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b75aa98b0f4b0bf95d08a044827076962f2ac5c27073f371e8a4f82035140a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42208960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ede43fdc08a6bc6f2991e59d249d403721e8a8c7fa123dc4e1a00a18d5e48bf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/INUM72200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1f7feba0495245a9fd77597da0f61fd2714e4d92910799d0df42c4fadaab39. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAGG2220647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d282ec91a5deb4903f11688743e01a9905507a1de483e4c14e3c9f28112166b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAGC2295083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31983f35713fbc6f04f7c97f3b5f91a66c36e68341a23beea54ef0398e53b09. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ62267488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62d0357040f00d89f2f24da2c19a9f7dea50f2eae2e929c7d68bffbd17a110f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWZ2152697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3e360d45ec41cba702f9908bc4cb8df886fde7ba3c1da653fe7eab86a15b6f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFT2137086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7e969344bf12829b48aed44d70e84e3b1511a1799a95677952c04d02f77460. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6TI2168240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2934df1a2601ace729515397e83a48acb51991b889784b192c551c33684630. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6H2194086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651373f964fc50d904940b9289f55a02a1a737d41525cf9d5c1d790add55a06d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6P2120360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f40c84601277f8fb62fcd756bcb4a823f42813e1fb986f8dcfeed4c62c8be5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNB2141461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd559d2c93420dc410605647c816c50a607e4e90f338b3604017f7798465831e0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBSMU9933029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd9afa6e2261cdd4a17191684cb0fee18fc86a2b3f6270df59b19d4430e1865. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6HN2117992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85b23495306555ab4d6b6b8204e235cd77abb92f6cd5ea6beebca0c9d59b1cf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES52130090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5bbdf961bbcbdb8590366679903e21fa0ab122c40f56e975fbaf721b2fecf6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM42K2029571.