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 0xb09469fa285feaa5218f0c2d269a21fe7f08727f8be23c596a8c8f976253baf9. 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/894631f0-e487-4a61-a936-5fe1cd21a315.json and https://artists.proofprofile.net/proofs/artist/894631f0-e487-4a61-a936-5fe1cd21a315.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
slide da treme melódica v4 (PERFECT VERISON)
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 0x1a2afb0ea7f88d7f623cbcfd87a82836cc381e8d4606b9bf5ade406db83f706c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:56:42Z), 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/QZTBA2451025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0ec2a41540028124c5d809b999b7bd054c8e01179908b47409ccdb6b425f95. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/CBF8B2435781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6613f274d6c2cfef35a8e8e75bf7b2c7ed1c41b3817363ef392c28df6ab717. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CBF8B2421561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a51cfff5e0aabb43d52132d4e9d2f512627752d8ae215d3fa62a9f43639266. 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/CAHQJ2518219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cb050a48e8bb3b950c737c1548116737d032090a3a1b97ebe5b43e0b72c750. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ7V2597438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4182ec4441e0f775e6dc43e9a4cb6e1767e4bec11f6f0ab544ba25eccc74c88e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:51:36Z), 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/QZZ7T2572072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbd1112b71f07a03a99ab50faabaa3ba5ce7b5779f75fc34a07f0c687e78b0e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:25:47Z), 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/CACWV2548180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb175c485002bf9d9b756faa6ff8a32c9678ed3019672e8051dd8a039efae0148. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/CACWV2553364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a7b5773ec450d06cf483b114479464977a8ae0253cb3908b63ae055b866135. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/CAENV2533332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cbcec4d80605b31609b230bbb3288207da2871612afffe3d67885bef98d72c. 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/CAENV2533335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73430c6963e91f4b1965aea3421744687147e5ae8c022ed363f34fdf977beba. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:08:29Z), 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/CAGOO2502748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c1d8f245003637bb2c0b33532da378652114e06d4d664de688dbea1ef88817. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/CAGOO2592906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56d095391238d26a488e4c0e2d90cfa0e15233c1b4569ad63e0983c12e93180. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/CALVP2504479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe700b594bd0862e847d7ba1896d16fcee7f531a1f37abbdb2004f43d9515c642. 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/CALVP2554145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a96e6da317fa8a3055108b937e31bc4916b30591b9a8609e22a49a47ed6158. 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/QZZ7S2580406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbbe0272b60e7ecb6cc4b045a94c72f495635430eb4ec5a0cdc5f274573d960. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZZ7U2515522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f77ea1c814b31d4719c1f0edbb45a587792c309838f0344de8d8b66c41a82b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:07:45Z), 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/QT3FB2521866.