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 0x177a6dbd93e655bab63a0ba5ff833ab6b6e26677f208de8c8e82981215a8acf5. 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/36472d13-6b59-4530-bce1-da3f9e387d56.json and https://artists.proofprofile.net/proofs/artist/36472d13-6b59-4530-bce1-da3f9e387d56.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 0x0a8d4cc3ef5f1ffaa9902cc179ebc27313a954994163dd37d506bcc5a1cfc543. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXHG92538342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593abc09735875846faee39b902440715fcab7f48524f4f4fa91a5d2b5d65d32. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:48:28Z), 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/GXHG92538343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab678cb689c9ced9e8793e523e765d9da95b6d48f98dc9ba41c9c3771401e74. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GXHG92538344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91018fa11713348d3c15574f6660fbccfb6dff9bfe162b23e75ff0a937b23691. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:40:45Z), 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/GXHG92538345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1309a55e65ea67a11073d4ee0757649a0a9f3d6582fcfdb2d0bf4878bf148e. 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/GXHG92538346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2919d63417a3db0131d8b71d18b78464c53fd2bdfd7c4cf25b25940a5abead. 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/GXHG92538347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1301614bd3bb794d6d6882e25515978cfd6264afd1d0d0406a1462eeba848dc. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:38Z), 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/GXHG92538348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7c5c0be24bc60898caa35dc83b48bb61d40d2f04263c575a9640fd51098c9d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:48:47Z), 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/GXHG92538349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0604960393b1b8b1aff5af8bdc93a1798e843e8ea42fdf573af5a0b2bdcd4f74. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GXHG92538350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ea91751cbf3ef61f819ec0c7668aff26d00530f8d748b8b1762e9b9d8583f1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXHG92538351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42389959315ff318d14ce4b1796a459af7453c0ebfb7a0e2a9afd7a0aad0a99. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/GXHG92538352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b50dcfbcc0de12487780d2492f09aca3bf040237e7eb2f82b035b9d845ce3c9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXHG92538353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed185d29a3e736b3ff93d8502b2c7c6be07bf50aa09c3c7ca32a50e328966389. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXHG92538354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cc56093e83e4332a0c28031f77d951c600e45351924c06fd75279eda91d51f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXHG92538355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f40be420efcad29a931fd6b887981f5afd7b0bc3815d2c3af0056e8ef7b7759. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXHG92538356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e786afbfbf3de1720b4c934aa72df647d898255bc1b4b2e1e8ede69e7df6e1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:29:48Z), 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/GXHG92538357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0e4c2bd86bb130bbc482ac6fc900c6e353be17b06c65602e2dbf0b921e4349. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXHG92538358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cb847574d54d405ee440a797382aa41bf7003fb1c60112190599d30cc772a5. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GXHG92538359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dac9970dcf500484f6025666220c6c8529b61bf67faedf7f36f0fd88c1f8c5. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GXHG92538360.