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 0x29e4e56b079b3c9a132c3df292d9139d353de5e2a5126d5a0c1e0fe946607f0d. 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/f9f33884-8cde-4e93-b265-58b1bdc1ed97.json and https://artists.proofprofile.net/proofs/artist/f9f33884-8cde-4e93-b265-58b1bdc1ed97.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 0xdba784cf0785479fe2d505710b106cc057c0eef3c13b7e2a138021e30b0dd482. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/FR96X2152259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b31030503027faf549c252ed7d67f9e73afbc2e0bf07dc8fd670c1893df6701. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUA1D2175936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb7e55716301c17ea3d7b732889f3e0be0450c686507c8ccaa28e9d601c15a6. 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/RUAGT2353357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc657484a2c86cd9162bf0ec032bbd54f71c03fa3945676f0199913e4fbec8a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUAGT2353358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdb7c7ac1a4e8d6c842d04b7779bdda59e3b8ea298ae0c52c7d761c043bc4c2. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:29:39Z), 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/RUA1D2361398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc0e34893b55ce6987da121cb59de4669a6ebca75e81287af28a199ee2a05b3. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:21:33Z), 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/RUAGV2406458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab6e5e134b8cad46714d532ea06b60b2217fc8367ee0c79babd2772d0882a27. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:38Z), 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/RUAGV2406460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed449e880610c83fd59b0ee7acff3eecaca59525cca0e1b4ca69be3d1cb8bfdd. 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/RUAGV2406461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e7d30c77b60d21b6ec7de01b24aee44c906acb122efa9278e456bb48587e63. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/RUAGV2406462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0873e451d0c1cb4eebeae2f3a5102217a236159af958ce0308a973147f2ee2. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/RUAGV2406463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b69ce163b1c5a4a9f2c8b96d561de348f8de36470389a6d7d44a57bd7f5de3. 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/RUAGV2406465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561be325d7eff43031fa2f8cd66b79a5395d56e7d7c1f0b3f280fc68f24d331e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUAGV2405261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2477b15995d4c41544cc1ff966d597feeb1555788135c75ab65a850028c4e6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUAGV2406467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8806940c71a36f84db0425839e622e3641268e1c83e9893259f359fcb4189c. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:05:10Z), 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/RUA1D2548417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4ca0439e8890b6feb2537a08295f9a3db18433c22083c3f48d8e57fb89bfc8. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:57:14Z), 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/RUAGV2512412.