1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x69907d17a9477cf6b0aade51871b6989f43f1385d9ae89b202a5fb04dedabaec. 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/e71209d8-00d7-4976-913e-1dba2e425e2c.json and https://artists.proofprofile.net/proofs/artist/e71209d8-00d7-4976-913e-1dba2e425e2c.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 → block OTSBitcoinBlock must exist at that height 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 0x187075423cdc5344a6f7cbeb70a2aa65f98a920af1019a8ae44b334615497f9f. 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/QZFZ71997077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f82acfd8defce37eddf75e84fcb5caa179124c962e3de1c763d902443eca94. 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/QZK6Q1949106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223e11e9864ad4a6628989b732092e32af269677d8d4a5774195decc83ccec11. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZK6Q1949108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed12ad749d096ac1d31cdd891871747fda9c0d5b4a6a9d2d0fb8d22dd448c83. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFZ42082403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2e5721d270ccf3d0ac86cae7a34a9653e1e42a0b9da1c2b1033210ef088b30. 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/QZES92012698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45147ad5f4bad16fe1b180a5f9a5e147739a7c70c554ce77e8bc102e08a85982. 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/QZK6L2149856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62129acdef45d64c1b7d889ba15b2acecd938e06b61a2cb39a99cc0eb491d8e. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZFZ22280396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953597c0ac6573df68892e13086ace1fd8abc37c1bc93416735938e44e47164d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA42219714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd75daad841ad724df278c1b4c636d0e057bc9e302835d79ddd37849cad8208c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDA82202198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23273d49167bfba516d093d6d51b73d89ef6f7b3bf6d70c2a716fdd2ebfbc6e5. 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/QZDA82202200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2515df8b32bd9bbea89163f162248bdfab6df67920346e03200beaee5c45d9ac. 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/QZMEN2275073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e1abe78caf134f672aec7320e4cb6fa959820942ad00918c43bd2589e55f3e. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZMEN2275075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7098c45b00227436c8a2ee952ce3de75c146b0a0f83a92c048cc14eae26e7ad. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMEN2275077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc537d45887a61ec9219d1ca59fa95e0e1df5c650a52d7fe012434a095c58425. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZFYZ2383306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb4407783c17e1ccd1c0255adba66ffd07231d300131eb8823f4082f0781715. 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/QZFZ42366316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dd3442df0fee3422a8efc2e4c5b24b531f5374eae10d570b2545d84807857a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZK6M2332441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f99bbf613ae00e835a19685a2883bb15aef13654ee0abb670f8ffd5df7f6add. 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/QZS652537364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3e2bc1e04c75905de9d96389edf4a7059a1d156942f82cf667fb0435d27c47. 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/CBF8B2526560.