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 0x7c185a41bfe891fc689b64b384641be298a64d1f88e0568cfbfd3e412a7c048f. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9abe12b0-c047-43cc-a61f-82b568f458d6.json and https://artists.proofprofile.net/proofs/artist/9abe12b0-c047-43cc-a61f-82b568f458d6.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 0x4bb836ade776e607c2811acc51d5b82f51435d4f03e83510bd91adc1deac7eab. 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/TCAGX2359666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dc13ea09da0c821c530377bcedfeb9794b4f3dbfd55d347e26dc832b36a6dd. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:21:06Z), 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/TCAGX2359727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd4701c5a1307c667a895ea385cf3bbb417f48c4d8ad7c723d29473323b3922. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:10:24Z), 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/TCAGX2359738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9680ca6da41c338549c65f8a189c1d3ff49d53ccf9c4b3db54ca3a48be928c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAGH2229995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57356fff3eb7e703ecfbae3563163c78f2f9d90582bf4557833d3ae8eaaa404. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAGH2229779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1628731437bd99d4181b6a45d502fd4b8fac9a759afc2e891d6c5d4dfeebf52e. 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/TCAGN2219355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77545b440e2bab885c6be1c383449ab194f1f03453b98fb0cf9881d34ab51c1c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAIZ2417667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62579a46359bc1da97ecfeb014fd13c0d6102f936ed3cc4bd05725c3c18b51b7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJM2537413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6b1fe3e709aa8eb5134c337aa09a2bd0cbcde4d20e1acc6b6a3cb73aee68c4. 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/TCAJS2502675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62579a46359bc1da97ecfeb014fd13c0d6102f936ed3cc4bd05725c3c18b51b7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAJM2537413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695df1fbf966d2f08fbc763fb8c5c3392724913bda48ac31d3b821f755f15f46. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJR2503003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4533f61dc2d5014ff299cfc3f04814d240e7b75d62b5fa41af4c93a2ccc3a18d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:48Z), 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/TCAJR2503202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4710b076738b1591e96d2b586bc15c023773d0d721b926d6e39da0252961b04. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJS2503256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5de5c7e535610f7ae685d77eb1765e615be9760c0f51cdd285dc3b31fc00ae. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAJS2505287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2894beb08b7dd65589ab9383fa2c8ab07672b91fcebc6861380a47f64476299e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJR2513178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d605dc2e28d915f0d5904bb9d47ed5f96cafbfb6d7792da890db5277efab41. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJR2513756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c42c9cf9f9a78c6d1ceea56afa59dba02816aaccc9a0d1ec0f0c82c39ede7d. 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/TCAJR2515642.