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 0x41757d8ec20503cf5b07beff3804565a40351c10893664774c35f088c7a8d678. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b22c2c3b-fd95-40a3-abab-a1755708bf6f.json and https://artists.proofprofile.net/proofs/artist/b22c2c3b-fd95-40a3-abab-a1755708bf6f.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 0x31a69169e5ae1d72ce5fd34879626b49b7718236ba1c5e0920fbd2368651bdf8. 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/QM7282441357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee6cd9e02d0fcc8a79bb2216089d46fb91b3452df0d5a2bb0a57017f58d9886. 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/QM6N22433404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bab96d573d8b5b63fa5a433732c11242046049c2abb4dcce95a9f06707a5162. 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/QM6N22428432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d0172d9f7e00a849b2a0746c9feaf9ac3fe752e43351828748309cf109f891. 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/QM4TX2456813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc184109dd1401e47496efdf72bd39cbaa1a4633ff817f51003fbd8414e2f7dda. 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/QM4TX2456791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09b3b79478525bbb54f6df4d70a8a1df33ea2ec3581cdd03b9730cc99d39c96. 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/QM4TW2408686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe359a90677d453c3c9b4c97586a60bd4d394601ea73ca67285eddbba8cb6729. 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/QZTBC2301336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008d4c4f24a8286bb2a89de955b6d8ef78b8b264d535b193916cc8c1446b9bfa. 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/QZTB52360728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e705116da32bea9dc8d3e48e831696ef1f440ab4c1b7914ddd9b6340dc66bb6. 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/QZTAS2312313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8abd0209a4840cf62dcd9a0925948d78bedfbc0dfcfbf3921ceaeba7206cc0. 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/QZNWY2332481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd98ccfc7f9befb588efaebb783df71b7d2cb5558109afdbdc48a9ad0df4bf4. 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/QZMEP2388043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdf0dda8f775bc1c229583462e85dcd726ad6ee30fa76053797fad020d170ac. 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/QZK6J2300851.
Aemeralds Presents: Library Aesthetics, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b81e5bcc62368710e800778e76a3310ed9496836f3732853ef4948f09df6bc. 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/QM7282441575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4c942092c21f0fbc0d8c8bba18c6f6129c5b0971102b08d845a99adae78105. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7282441311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a3fe29ef18c5ca762bc1170157969779aaede284830b3477151bfd107ced24. 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/QM7282441318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1febcefd65d3e969b178fb9c8a953a1c205bd8d9902cd4997bb6186adfa1a91. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7282440960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0d7fd1fd6aa67b2302a49176efac219c00ecc86d7858dd439b012f7a8db095. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM7282441341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ee4ada3ec7d8c43812aa464c4f3fa560fd4dafd9aa6debc4b39c25e64b2fb2. 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/QM7282441344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c2ce0f5a41702e2c065d1635ac0555a54a4b49235e34875fa45ef992c43c01. 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/QM7282441352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a69169e5ae1d72ce5fd34879626b49b7718236ba1c5e0920fbd2368651bdf8. 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/QM7282441357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f09b463376e4011c6b0e44f32ecbf894d0601c14b8de82338067a43a16e856. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7282441359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f2c293175f507dd18a4bccf949ed7b8f50734356d64f80a755321cce2d8f32. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7282441365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf293fcd3309e5455b842f37d699e2cc6077ec1880f5e3fee829a0e9f22d9218d. 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/QM7282441369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bf3219eadbb121f7d1d19605446e9b53c120f5e6b6d764ebadcea0ffb6e843. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7282441370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541a13580e4e8578837ed7f2eb0147e2708052813207d60e807caaf0816d87bc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM7282441371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a69169e5ae1d72ce5fd34879626b49b7718236ba1c5e0920fbd2368651bdf8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM7282441357.