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 0x3db4d053869045bb3ced67d6d7c3546f4f1e5fede5df962202c707b6dbd8a6ac. 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/f00d1d71-0c38-4e9a-928d-a3f97a6d117a.json and https://artists.proofprofile.net/proofs/artist/f00d1d71-0c38-4e9a-928d-a3f97a6d117a.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 0x6a212e571beef18ee87025f7553b6d92c4e4af8ea012ec13375bfa686700c8e6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM6P42520473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8879beaafaf71bba08b21fce5444e2a57bbf6fc96d61229bbee4e98c795e8e42. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:44:16Z), 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/QM6P42520474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7dd4f53eb89949ef9dbdc8d1bb90101a1b2c8baab573c79563e3bef52c649e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:18:23Z), 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/QM6P42520475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73bd6d94ded772706130ae98e4db13c1a492a294030bdfa0e8527e410e7dddd. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:07:34Z), 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/QM6P42520476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8014a1c21447132ab448f6a0a6d8bde2eb823d8c0231875702d7797519f9dec3. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:56:53Z), 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/QM6P42520477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc1ba6012dcbc7cbec666688c6a2fa8f11c59c1b6bcb341e335988dc3caae9a. 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/QM6P42520570.
Lost & Found (demos and rarities 1995-1997)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70e8220476840d67b44d35cebf3d531f2fa3b085fb4317aab92b0aaf4c73f68. 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/QM6P42520589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271639961c2d381eebe732cb2c5b53e2be4fa740db3e5f05dca59b94a33bbbec. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM6P42520590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfb378df6d93b72ee9e790abf41c551ec8d6d9cc1af034327ab35b7f633e9fd. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QM6P42520591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b997cf9855fdb5837b179d31e67d9104632b88ab4431122240dc6a25ff1c75. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QM6P42520592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41150d9acce4055f5d01a7d0514bade4607bbe5e21899ec172b6fcb687c890c5. 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/QM6P42520593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52eb0def653df9a0c550396cf82df3dc28bcfed8307148e741dce0c59b71830b. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:59:16Z), 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/QM6P42520595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeefec845cb8dc87556f23e33a79378a7e4981f5c39810d8354596796e4f96bf. 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/QM6P42520596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a866ec82268791dfeb9831a3a2793b8b195272e9fe574400477c0ebf86acc6e. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QM6P42520597.
I Can't Stop Falling Backwards - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5484c0014758d0c4f82d2fe6d4634a050018c51d9700ade070105f58d14375. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:07:01Z), 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/QM6P42520598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0668127757372dbe3773c72e68322ce2d438b2b039c26999f3a1943254527d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6P42520600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed254dcb0a74903bd7a6407a44325314fbe388048b3bcf61ce4c2074ede09fd. 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/USBHM0610067.