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 0xe0358f920d0afa778c597495403224dcfbab1edb85267016702d9fc05262d97b. 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/05ce9f17-e82f-418b-892a-0d1224d264b1.json and https://artists.proofprofile.net/proofs/artist/05ce9f17-e82f-418b-892a-0d1224d264b1.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 0xce1fbb60c558cdbbb48c06fafbbccf8eccab53b914c49bb1a908a7f7c8ce4236. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZKDK2066174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43f01a495123a258d5396f6da3b533b05a0122f615fb482f234f39edaa9e2b6. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:57:13Z), 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/QZKDK2097028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e832366ff7e4bc7e54a77c91dbf53ecc6b3d35c574dcadc322ec13006fb21a5. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZKDK2025479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665e5c1a41eed1b2ae42d767f4c0fffbef238a3b85c3263aec3c5357007bf2d3. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/QZMHK2048174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bcdc1ed21fe5a0b4702bd1a9af37a9e0871fbc06422b786b6d0a65b17e7ffb. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZS642293971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d91fc235249d532c18aaeb7ae5718b1ecdb44a654bff286960075615b2ff5a. 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/QZMHM2297656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341b14a49919f4cb64e782a3a997b5a62ad002071539a9e5dce59c3830698d74. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BCRIZ2200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad89a4aa32b3a56fcbf6ca7d053a018d92a7247b495917398e5185e4027040c2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BCRIZ2300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccf89fd0f433cf8344e4a57f27754cffae508f19f01aac3bbe71856cc47a0a8. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/BCRIZ2300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935bdb34fb9f6123e2d2c63ef86ea3a78470e6b33873eddce182bd6ff55cd585. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/BCRIZ2300752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68692f5e8348edfbcc0785d4a8f5197cf91c7a099ecf483f3e6835c742a90e78. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BCRIZ2300754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e89fca77855f7e0d59fdefa3d3dbe1f1307d733d494e00c2f2bc1003364b88d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:36:34Z), 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/BCRIZ2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4547aee45741fb7bf91d339f368c5a201d19591ffd36775078805671c9a5ae1c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BCRIZ2400919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5dab4cabe9a79943a40dbedc26e7bc94c585b1753e22b232b9eeb92ed76262. 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/BCRIZ2401260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799e55cfe72af41f76d34228066c2b448e138f05d7b07680dc7caaec945a8739. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BCRIZ2500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea6d78e4f2a265f4c328d5dd2f06352666b075fcd356a639cb1dea06e2e0d68. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BCRIZ2500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4e8c2e9809495f0b05f25cade389cb4bca20257f7736b199a8c45bada443a2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:30:44Z), 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/BCRIZ2500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b34783a3c667a27ffa6b69e0cb654cbfeb6b89a1f81ea82d7b9bfcc9e6edc6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNJX2596646.