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 0x21144615a405f4e0c0c4dd166411d4de70dd52a462d5da8f73b5b51baef164c3. 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/04d30eb7-6320-44f4-a56d-1fc35a5ca912.json and https://artists.proofprofile.net/proofs/artist/04d30eb7-6320-44f4-a56d-1fc35a5ca912.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 0xba7cef2006d19221d211ade90b643e65101f8c3de8fd2f1444543dc23121c353. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRP4A1017003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc857edb9b89434fb0972a3deccd5921d21f13f552d37978ede2587234f9babf0. 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/FR6V80837503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6996ad8c49915a8cb7f4c7b99b220a8263c35aad85bfa56a5dbf903a5478cc8. 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/FRP4A1017005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488c532e2cedb54645e442aa99e1a7594912f03898579e95b83933f3a6364ec0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/FRP4A1017006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055f2347bf5b216a2ee114b452d4771172d9c6895f8dae1bbccfb2a89f9fa765. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/FRP4A1017008.
HadraVision 2 (A Chillout Exploration) [Selected By Sysyphe]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37197c3199a20a51847f303811ec611bf5293f3f4ebbd7b133b8ad750c7ac05b. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/FR6V81749147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c81a531d5e06f9d636cdd5b9ff29dc1ee8f3c56b56dcccfe65b3aa881c45cc0. 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/FR6V81749150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8d657d43b596e03be0d63a6578e9ea83a2942dc54493b6dc2d2e773ea99f84. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V81749151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddf93513d39ac90be0d74f12007936f808156187bc279be992d29c2264bf78e. 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/FRP4A1555002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7591562b8974636035951599c7908d99647048709dd988df2c6bf67d661fe7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRP4A1555004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d99f0e964b5de721ecf368a66747646c71ab89960649b7ecf4557f461ccc86. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRP4A1555006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc98d4f61d58413509afa1b8ddb2d362b864aa77e9a188c92ab24277ab468c4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:41:44Z), 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/FRP4A1555010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dd8c2ecc2d0f6e087f232f9a337af7b1f29c2908817231dd59304afe588ece. 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/USCGJ1182055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2965dfe7bf2d65fa47234b5cdc0ee06615cc4abfeadf93c93ac92101c327b41a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V80135270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558b00180d8718d5dc0cf573631d5287b3ebd25dc63327d92851b6311527c1c7. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DKZVA1560694.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch