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 0xeb95d8df89c085a62bc64d68514b8d859a5c6f0b48be5eaa253c52658f22488b. 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/85e784e2-a175-4369-8960-854696a4d7b8.json and https://artists.proofprofile.net/proofs/artist/85e784e2-a175-4369-8960-854696a4d7b8.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 0xee9470593f6d59f3548f52a98b90a9a921ccdd35ca5204c865ae2d694f3ee5c4. 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/DEQ022006160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba8684593f7027493b19d9a0dc30cb8ac56e1f82479815b73d075d78042f21c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEQ022004689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fd858f7b924ea0aa36e036bcfecc64fc6a672e8706a1f3d188ac1f6324fcbd. 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/DEQ022100781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcfa1dc8b730b482b6e3dcbb3e3597bc5d1252c41409eadeb78787498430801. 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/DEQ022100782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac8e90e3bf1de5a8e20ab5ba265878669d1a2ee9fe22cb0c0ee3b1b74c68d9f. 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/DEQ022100784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568d4081f2980b3cea74d8e41e661e87046f595f440aa7336b80f43f42ebf336. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/DEQ022100785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f613ffe9bffbfa56335de784b6f093c8c7874ffbd6872b496e152e75a6651a6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:03Z), 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/DEQ022100783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde35ee31b391df3445fd8afead962a0546fe42045c66a891857a21f74019110d. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DEQ022011592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca6219abffbe77a1684bda360a18860f7a7eaec46bd0426e17fb6bbebb0a1b3. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/DEQ022011786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3bcf4698db2f126673c3836cd9484afb21ada7a94d85ffaedfeab883a78795. 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/DEQ022100786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060c30148162ab9467517ce24db76ded8f62d799e68fa8858a4358e109efe2a9. 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/DEQ022112309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060c30148162ab9467517ce24db76ded8f62d799e68fa8858a4358e109efe2a9. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/DEQ022112309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d09b0df478ee325be20752095c76f8ab46e5fb1828c634ed1e05e1ab04d1cc. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:49:31Z), 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/DEQ022274594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2254bc43855a66d1c9e55ce5714534f44f34f85334373244bf659ec5797189ba. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:59:16Z), 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/DEQ022381205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f780960e8bd1f0c58ba4bbb2f69e8dcf0c363f9fc8b9a13800a189ca6853e7. 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/DEQ022382424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b02adad791fc6ecf9fdd0e32f4d00f765c64910357a21beea5d21e4a6a6aec. 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/DEQ022382848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d09b0df478ee325be20752095c76f8ab46e5fb1828c634ed1e05e1ab04d1cc. 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/DEQ022274594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2254bc43855a66d1c9e55ce5714534f44f34f85334373244bf659ec5797189ba. 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/DEQ022381205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b02adad791fc6ecf9fdd0e32f4d00f765c64910357a21beea5d21e4a6a6aec. 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/DEQ022382848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3193eb33792ceee063b581cddda605fd6d32129bebdfaabc3b4d096d1453776e. 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/DGA092319491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f780960e8bd1f0c58ba4bbb2f69e8dcf0c363f9fc8b9a13800a189ca6853e7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:49:52Z), 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/DEQ022382424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d09b0df478ee325be20752095c76f8ab46e5fb1828c634ed1e05e1ab04d1cc. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:06Z), 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/DEQ022274594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9c0e417d731d0bfd207f66ca120084a770d5a30573dd73979a2937f699ced9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T22:00:53Z), 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/DGA092319490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3193eb33792ceee063b581cddda605fd6d32129bebdfaabc3b4d096d1453776e. 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/DGA092319491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f780960e8bd1f0c58ba4bbb2f69e8dcf0c363f9fc8b9a13800a189ca6853e7. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEQ022382424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259520973a35f9b0137c36a58c8c97b271d888bea6dd364bca41ee8584659e07. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/DGA092319497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b635ea3fff26f6e7018986aa6c7cef1c1d5c55f30df4dbe88d50598129c754b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:07:56Z), 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/FRX872438321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833c3495d0c759e973a36efc5fd5cea3b2b9ac6dbabb17e06bc6d14f8d16528c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA062475706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833c3495d0c759e973a36efc5fd5cea3b2b9ac6dbabb17e06bc6d14f8d16528c. 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/DGA062475706.