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 0xa892980a85ea10e3c4814c232cf95871abede13eb475573a6e4d0383173477e0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6aba6bd7-031c-48c0-a43b-241551535b11.json and https://artists.proofprofile.net/proofs/artist/6aba6bd7-031c-48c0-a43b-241551535b11.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 0xfa4625c5ae9d15e7fed0e239759022bbff71a672e8323210346b6e1f614bbdd7. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/DEYX82248430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019831b83ccf42831982fe77748b55863e0084e20d9d0c831e02497dab2c54ed. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:48:41Z), 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/DEYX82248429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5a888cf2100669cc4d9764e61c7bbbb7c9efb2537a6719663f743ae1c98b61. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEYX82248428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26dde11b2a31ebde492cd8e2121b6cef2f746209d5007128ebb5a1e43d22e33. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEYX82248434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a86a214b1a8f792947d62ddf43d7df8c475ef9bd3e84da8656a850be4238db9. 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/DEYX82248426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049a54733413ea348b5a5673ddca0e973c1a9353da51c5a2bca6d56faf248bf4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEYX82248425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd010e01a209c2d1e6e455716e0515f7a67cffc65675c276df94ec4c2a8c964d0. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DEYX82248433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb930bf593f7c2319e82df0aa6646c64cdab31be5fbb62065d60243f99bb5641c. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DEYX82248431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb68bea5566fa51ded7769e23705aa13ffdf37e549e1ba758ca29a096f0d25e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEYX82248432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb645d724fcfe15894e3377eac4ae90bc1664d9e5c03a204758087ffbc7707e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEYX82248436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef774b843e607bb3e12fde3704af09d7d68f65c08f59bbb0ae6130331a7a4348. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DEYX82248427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b78f8f8d83136ce461d4dc1395bf5f4621c2c6bc4de5190031104c3267be33. 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/DEYX82248435.