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 0xafa6936fc96f3e44562fc0b7598f0e0b7ea1c344594b50c4b4b22f48db1c3dff. 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/458748c3-dfe3-4ee9-8b9e-a1cac9352098.json and https://artists.proofprofile.net/proofs/artist/458748c3-dfe3-4ee9-8b9e-a1cac9352098.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 0x0d1cf3f0a1e2cd4f0e19f8693aae3c2c8398a5b8492173a1bd738096752dabf5. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/USHM92030051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b78c7e50aed6ae49fa8d87af04fd21ae4005f4afa3dc35b5d498e937c6e7f31. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:07:02Z), 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/USHM92030052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c2c263456bd868ff1eaa2fa5cb921786726257a0c804af51daa1a9eaf4f52e. 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/USHM92030054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f11e6be5b12c17f93dc2272800e4a5f67d5412f19616f05d3da74e757977312. 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/USHM92030056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd82b3a05dfa76bb95e96c2c1bc2c45087e58b712b9e245921e29ef694a9a01. 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/USHM92030175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77826cf3b079881a6be5c05a864c39bbc64c54b32e03f6e274858e2a669affe. 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/USHM92030176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86026b8ab3b1869233f5cf509c36a34609ce769bc3524b69e7d51c92f2a2f83. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USHM92030177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66e6b52b395b5bd24bc579c0d882574980ba1a8f047e46d97ad2bea188f5e86. 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/USHM92030179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad90d4a3f7770e7304f8ff0726b30554be3cd35515a1e4f1f6fbf792c7cec23d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM92030181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764b9587fd204478d0d3ddfcfa2d107d91be008ce240983effc5e0bf828dc7ee. 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/USHM92030183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c371bcc727e8c369f5b36d138b24f358ef22e0b1f8ce38579106d9a5fffd492. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:34:43Z), 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/USHM92030185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889d6ec218dec6e3a43e7c77c1522988dc64de3ed83793b0ca315cf08438f4fb. 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/USHM92030496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7e29c190eb748728f02ab06600aab4e42c714eb0316243e74422dae8e23f05. 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/USHM92030497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f194ec0f64e188d4c4d664623f075d1c47a7d50ec4f11ccae8336d94f474b63. 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/USHM92030498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b438041fffaa4e1d04a1b400520672622d5fd9830f124d5038c6fecaf87148. 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/USDY42298097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e84477230d1ba3f7c1be61afc45b414c23fcd89c07b02a49d918630ab0d19b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:43:37Z), 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/USDY42298099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958b4b904774b1b17780f9ad92a4bbcb6b1b47902bb12ccea1cdc48bc750d794. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:00Z), 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/USDY42298101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa32809d92aa260d58a5b4398963f81dbda3e57c6ceadc0a41722b2fa5547bf2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USDY42298106.