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 0x231e3d9929cac7f7b52727a57a50ff11c883cf61c1b7dd0d2b83f3c641a55eb5. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01b567b4-9438-4e09-adc5-4378a7ff9200.json and https://artists.proofprofile.net/proofs/artist/01b567b4-9438-4e09-adc5-4378a7ff9200.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 0x08d6ddbf59daa0179f937bc2aad87f92f81a4c0e27e2c60edfccf324f609f523. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPG102201357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0741d911f5cc8d084794b85fd10158ceacddf896398ee818ddb87870f1207eac. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPG102201355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89514a3e292f4a5b185a26a0363c6fa30429d244bcdea1fab98ff43c5e853fdd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPG102201356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc9ccf070c60a03bc4e9cd8049135f5f58d8901ac72a9079e2bf931b0f42044. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPG102201359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9f520649114a7a98b9790eba5e5ccc515af95e699605abe6e6256c47928dab. 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/JPG102301086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed9d9072c3bd496de76f3aafbe256092e3845b5eb7a23edc68da2ad2ac11f72. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/JPG102301080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeea9f97a7221836baafbf8bcebe87791d5e424542ee55efdf41fcd4f94e5d45. 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/JPW292024020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5eb70a0cb2057fa0c83c19d6150c0826f207ca9217f25b31e1c3cb3fc6f677. 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/JPW292024023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86df98c044e9cb5002f76be107091efdb8da21c4fd69c810526d254566be826b. 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/JPW292024024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239258665700a87e54cc658ae8b9b937acf660a27a2309482642f66e2440f72d. 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/JPH372500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74596ad8f12de057c3ea2528119c1398d2392898fed9dd3b8a2070b5b59e1d2. 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/JPH372500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa009da85d15af04538feffb83bf0f5d2b2d9658ce4224f6b59d764e278dd4fd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:38:59Z), 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/JPH372500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd217ef80b2c89a975d67c5fe01a9fc718d8a3bd05eba74cf8668488d432fca46. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPH372500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8947e1b196a45a05ecd6b5f1cade75d8ebe114101856c22898ed68acfbf7af33. 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/JPH372500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e50f7d010593c483eea213f3c5fec92d6bf5386e9af3287f15af363271defd2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPH372500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff6e201c3103f18e6c4f0e789de8c25b10f34cc33e549051185e07ba79cb1ab. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPH372500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f348f1392292de9ab660b76be599e6fb093da378c8defac60d323410a5e651. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPH372500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd96aacc1a162c0eb931114fb2d379f94e500c1d3df41a50d369a3d80c6bcf4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPH372500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cc23d2c56dd65ea23338c8fa66e81ade48a445662e709ce544ee6a29d82fc5. 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/JPH372500029.