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 0xad1cddaf9e419fbcd14be3faeb3018513e1d8cd285dbe5d2ad38bd54c3c8c1dc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d1e84fd-2223-4fb6-a327-63c98977fff6.json and https://artists.proofprofile.net/proofs/artist/2d1e84fd-2223-4fb6-a327-63c98977fff6.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 0x3e6331624fe06faf3eade4c8f204470391995ecdf38fc6b987af285600a50561. 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/QM4TW2285588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8937a5fdf8eb63af1948cee2f51241ec4be37caffeb2bdc114e4c9ae815d2ec2. 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/QMBZ92301849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80a410e9e77096b941320d600c2ceb3f07c066c6c75dffdabc9023455ea68fc. 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/QM4TX2397072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133f100c7a70184012e2408335294187784132a8413ac3518da4499767b5d97c. 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/QMFME2242752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715315e54593c19c1e992953a83810579aa064907a9df0fae5b387804e5e2555. 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/QMFME2242738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1e4be52293bea6307f10aa7b5642096ea2d5e5ffb7371b7eafe970d64c2f73. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFME2242719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b47a35b25410756968e63a115bb8dc29e34cff45a49bf939966eb1cf48567f4. 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/QMFME2242695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a2d6ec98bc9d5028def9897bc482469fd8395eaa94314d20e618c2b38e4fef. 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/QMBZ92283732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1028e76cd53974a323f5e718245b715c502cd1840ec4a347c2de041e9024a514. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QMDA62208373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd10ef494174f567cf98ad65c970393b36f8dc1aa2a6d2cd3295fda83d94d388. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92289307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4358ca0007a7d13849d32c9b51e8e5a43dfb1462b28b761d8250fb2fc2aba2b. 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/QMBZ92265374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ccd7aecc495833fc2e1b53012511a2698011c81fc0af98215d0eec867b6190. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6MZ2217020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe3de092fc8ad006082196957c27d08e372af554cd9752993d751f6f16cc582. 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/QM6MZ2217018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b3cbd2aec8b26a677dcbefe8b343cd6be72dd0158b657c8ec902c770ed066c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6MZ2217016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fd926724d63387975f84d8bc953fd88d191607458405d5d8609b014867bea1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6MZ2217013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde9538723b70d34d9e6d7485480634da8d9095b814bb6d8c883a4bcfdcd38eb. 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/QM6MZ2217000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded204144d68dec602494bb1a8701fcf393edc15dfada623c5afdf8176fd3e5f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6MZ2216996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdd0442b733d3f4e00e705bf0774907a523c1fba499e94182f69f740efcb25a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX2232071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb40593864b0dbffc9e2fcabc27fa4a0f4ce4ff2da54555e7c055a294779ed4. 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/QM4TX2232072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff48afabc5d9564bd162ac3c2f0fc72613d6a9074804d4a8e79cb35639a411f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW2222013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14c608f6ad0eb6f80035cbd52cb3d66ab05c7cd87ecf1f32d4bc5705ed585f1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA62138998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9a03a4d7563611f16d98d975ba9b6aaf5d00c86a4c7dd208c3102532c42598. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QMFME2183149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629f76c84716f0031063a3ceebbc89d12efef08bfc706097b14d4b3a36436e9d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFME2183148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc404b643e9c829acc226e03faec766387c029c1cacd8d56cfad1b61c7f6908. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMFME2183129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dde87eb1947d195ba37d2d9c0d5f4f7d5e660c080208bb536c24ac7362e9c5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFME2183119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d234c0baac70a92af612464e3562dfdfb9d8c858ef5cdbcf8ce0f7e46dfe0b. 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/QMFME2183110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0dddb9a9778006c0f1339ee7a2c575f397861e59403e61bba392cbbe1ad2e6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMFME2183112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a0288a175ac44f57b180033f5f4219505939f3a7ec044dce28d18a23d0fbe9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMBZ92196898.