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 0xb7f0afcd8132b5cf7a2696bbab42b32321837fbfe48ddd81e34656a59fc90efc. 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/db13bb84-894f-4dd8-b160-5132fd6a04df.json and https://artists.proofprofile.net/proofs/artist/db13bb84-894f-4dd8-b160-5132fd6a04df.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 0xec2f8a6c95258456837e0d74af9b2f89866e5f3b9abd298e5eb0aa728862c1df. 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/QZHNA2348766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d4da2d46e74023569e4a9eb72a79b9614d9a2d21e18fda59fb273d1d913503. 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/QZHNA2348767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ef64f768fc3886fa010f4161d0dd1230457600923eb979fab8ee302d8ac508. 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/QZHNA2348768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83577b67c5cd62abcc140e9ba390abb9a5393aefa319f2bd0181d05fa84724ef. 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/QZHNA2348769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9226284d4b32ff257c4bcd184a09c083b1e28d114cd4a05408f14a9f5490e3cf. 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/QZHNA2348770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fe8044b637c93fbd1da61f417d8f72d2f1b86ac0fe845100588b6a69c66bd7. 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/QZHNA2348771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad14b954496874d79d5efbca5dc6f5fb12596acbea1eda748816a23d3866e8d8. 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/QZHNA2348772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaeba7bc7c260f99a1c4358926289cc7f96a53eb7a79f90ed8bbd8c4e0083a0. 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/QZK6Q2323871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0359bdd1398f4f519d6df54a1602d2404a592aec3b61d1d7550e9f1b3a384842. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZK6Q2323873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09b5aac15279803840375e2ff8c8e4bedd9c4cb101cdc22433557f81517ec32. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6Q2323874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16ba9db52943fa1cbb0c723699efef2520ac7b7c4759093af36ae1c8ca20f9f. 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/QZWFN2328128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d707ce88728c32c2f8c54a7fb26d937f887a686a6212bf829be73f193f92386. 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/QZWFR2366675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d707ce88728c32c2f8c54a7fb26d937f887a686a6212bf829be73f193f92386. 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/QZWFR2366675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b35074fc05b70ee95e087ef3f35c1645cffc5ef03c109a630f4827c5ab24bb. 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/QZHNB2434274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ae68d85693743a4f19789b788e3f169b465d9273b75825f1f676dac8353a0e. 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/QZHNB2476754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62875f673e85f7ff77d4a26e13e590093e3de8808f0e52f98d2e1625029b990c. 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/NO2DY2300689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3aebe6aa2f1b03be7d2b789d7773db79f4eb7bd8be031057967ec84ff6e265. 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/NO2DY2300275.