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 0xd812d86216fd0a7331db85bd4d6acab1291f18a86a8c09e8a8885c2cd083087d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d09f17f-37b8-417e-9d41-6c27479c502e.json and https://artists.proofprofile.net/proofs/artist/5d09f17f-37b8-417e-9d41-6c27479c502e.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 0xb1d0c7cd64bd9c3a39c96c88d4bf75a436ef95bcc23932c70535278b28aae931. 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/QZGLM2158907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedddc80ba2fd59386c21fe3e1283d9fe0a2413b2848f815317e9bedcceba2dd5. 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/QMFME1994071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6b03a2cad0df4715717bb6df05338ac939aa1930546a75d1aa829599946cb. 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/QMFME1994072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96b5e18a831b31e48b1a35e5dca385885cee870bfabaa83b3ba27b6f3fd7f3b. 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/QMFME1994076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177a20e3a772acb55e9e392fedff2cc36b0de9990f258d76fbcc6d89a04307a8. 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/QM7281963501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8884e4fd02899595493ff9e9f63195474486878d66eeb6a8d8e30fbb5d4b6a2a. 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/QMFME1994136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518ee5b5c1f1398fdd8b8177258d93635ca90af171b0a502520a297cd8c63365. 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/QMFME1994141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b46e4409d34625df51034788554a7683688c66f193500dfe2a5716e3bfea7ac. 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/QMFME1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc991f4435f11ec3f1878012c0759846af6266eaba9ed17183b85de693490992a. 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/QMFME1994144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b42f8657636c174b80f7c6352d57522b625044e6915a2becdb5fb36ef85fd83. 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/QMFME1994163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd0391eb44493e117ccdb6665edacb3f7a59d509cce865806470db16a181d01. 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/QM6P41934312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ee6297258259cfc3a5786f88a08f709c8b8c4eba67f3a9b1d44ec3fb7d5397. 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/QMFME1994167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc65b91991306eefdcfba9f9abd4740f8c00970732e4e0b248f5c43c11377ede. 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/QMBZ91921613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed2682fab503eeb3b040f2505c52d86efdbb54983d6ef0c2d514376a08d1e11. 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/QMFME1994176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f40a7b17949d00f108537fc4f7bd50a86e4c7b63544ea0a252be5e6647e0a9. 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/GBLFP1860319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b64e84b9d4ae787cae6b453756771940aa44d2a089a6eb297fd333a808be11. 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/GBLFP1857961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13130fbeef11620fa849d05e8ee2d9809b118157bcc5fde7ae24c4ccb68d21a5. 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/UYB282482463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61739d18b93a51d6843266891c0b3ae5859ec17a48a3e2497b2ebb30b303f59b. 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/UYB282464322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f9cf4c14a00c21d6d4a0938578e22dab81b2e9abdbf67b7cd19f6d546f232c. 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/ES6080545020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72100651fa978520ffd6426726ca86202457bf7a6e704a549fca6a312c01e97. 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/ES6080545021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ca21ac03169bcb8028807ce021433ac4a245a21a310bb7e8b53654e2e73b5e. 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/ES6080545022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244b221f0a226c93c72b6e368e55d0922c9a87b0cf64db330ffadf48304ad624. 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/ES6080545023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027617b3a63f719cbf4b3100ff18d396f515d02a0b6e44045625808ab6773d11. 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/ES6080545025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d1b36f19f4cb149a1a42033dcbd880664a7f1213ba2906719691d63aec36b3. 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/ES6080545026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505da4fc024ee3b3e43486d4796e161c8b7ce096be29da095616a34acaef2906. 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/ES6080545027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7386b39fbbcbdb196e3b9e29e96028da1b203531e4cf7f357b8a878aef41cdc0. 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/ES6080363208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615de64f46db56ab6ddf0f2856f8ecdb68077651bfa69589c597c53cba4f2f3f. 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/ES6080545002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97824c9092d678a3aa7aaf0a1178869193a35f6bfdeb8a7d116b56455bdab4db. 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/ES6080363206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc95907e8968d517085ede9b38812ebe715b44c56bb8f0738cbe58e8fef3ea2. 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/ES6080545017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb58fb9396f825acdad03f31e5ac2984a33da8093606e8d84b58b180d5014f8. 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/ES2080544801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf540c8e90c65e01300f2b288c7754eff28dd60c841aac4e47b07b79c261d17d0. 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/ES6080848802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c6228d862e1775004df9169d32050f6390eafc460c6bdb8e5409523aa94360. 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/ES7181281053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cd5cc4b56739e07d1e3329ceee6093fe34e76e4ec73c79c4c1f016f2fc51f7. 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/ES6080242706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786910545fc02718c27dda5a54b3adc1c95fdc3d73cc9ca984ba559e7b02ae4c. 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/ES6080242710.