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 0xd36867c73284a151cbe22b847a35c6f321303ca00b3916bf388b3e7689a5095b. 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/279398e3-6be2-47cb-a55d-07dc77fde313.json and https://artists.proofprofile.net/proofs/artist/279398e3-6be2-47cb-a55d-07dc77fde313.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 0x63e10a5f6b9b972497de063fd64b7b3e928bf19ed7d6872aed8f7c6c5c0af04c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA6D21500258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d3de51e94c766408f7c62cc3ab074dd348bc65d274a417205cb9e595f789ab. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/CA6D21500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1387562f8eef712d8ceea77d86e8f3eded81c201f2f9fc5a3f8973c50fb6dbab. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CA6D21500261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fc225870322852140e7b6fc33064052f47c26105b2387ceeed647a3be1641d. 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/CA6D21600184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1053c58af18a3e5d8322964740ad76988832ef6bbb1a3a78652f2690d03ed3fa. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CA6D21600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de25aaef4e53c5ea68e0ed725dd6b282fd516ad4a16762630f4468ca22e8c2f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CA6D21800221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdc779dba1035f3bc1c42604f27b5b7745fd706537e5f955bbac9ea61c2e9bf. 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/CA6D21800294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0ef475fd528d30d057d6707f531afeba6f5c4f4e58b20ebb96a940c53c2b14. 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/CA6D21800311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de25aaef4e53c5ea68e0ed725dd6b282fd516ad4a16762630f4468ca22e8c2f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA6D21800221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5730601b285bfd1034a31623e7aab051b085a697c9ef4f73548de23ead3097. 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/CA6D21800307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b8bce42627df49bec93b021b6e8ffd0ecdfae196214976862fa6ea0c1655d9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/CA6D21600173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe728511a98148ed0c175a369cfad31d3b31eb351b37c5970aeb82eee174d0be0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA6D21800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0ef475fd528d30d057d6707f531afeba6f5c4f4e58b20ebb96a940c53c2b14. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:17:52Z), 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/CA6D21800311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45005b2611604cfcfa692ad44782cd786a1808b7f31534bf5613a01914e08930. 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/QZES72012720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb670980cd344ffec9333ed708ad051bfdcf075ce43f1c1daf4c70e496c16feb0. 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/QZHN32076074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de25aaef4e53c5ea68e0ed725dd6b282fd516ad4a16762630f4468ca22e8c2f. 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/CA6D21800221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe728511a98148ed0c175a369cfad31d3b31eb351b37c5970aeb82eee174d0be0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA6D21800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdc779dba1035f3bc1c42604f27b5b7745fd706537e5f955bbac9ea61c2e9bf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA6D21800294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0ef475fd528d30d057d6707f531afeba6f5c4f4e58b20ebb96a940c53c2b14. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CA6D21800311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdcb3f1078222bab926f406979151bbfa1214df1d95b11887c305253f238d76. 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/CA6D22100514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de25aaef4e53c5ea68e0ed725dd6b282fd516ad4a16762630f4468ca22e8c2f. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/CA6D21800221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5e2ed44fc08069012fc8cda04a018d9dd6eef2dcad35cd19eb74ff3b7b5363. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA6D21400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d64b47c03c6cf520cf80dc2852f9408410dfcb671310dfd997c2b3dff8bebc3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA6D21400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1387562f8eef712d8ceea77d86e8f3eded81c201f2f9fc5a3f8973c50fb6dbab. 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/CA6D21500261.