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 0x55980984f4415f8f7113874b53454574a3fd1ea3f9ffc749c58a48c98eba2bdc. 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/291ae8d7-55c3-498c-b99f-10e309efa67c.json and https://artists.proofprofile.net/proofs/artist/291ae8d7-55c3-498c-b99f-10e309efa67c.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 0xdfa7cf5d03e6ff212ca73abe1aa7d37b5c9542536d75222e8823ce87532e7561. 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/QM6MZ2105332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585c5cece21c264d309c57dcc048c20c9f369e685df5af8f30fe47e5b1fb3ab2. 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/COC011933368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8bbf8d37baf87e4a498d85ad0f0768029b95d0d531c8af67661e2662144f2c. 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/COC011933369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561003dc0b15f414fa25e2db91f8be6b457ca9760c3828d220303f6ab39896b2. 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/AUMEV2490697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418c8e9a15dd6dcc0f490e8076febc3d6e418e1f294770a32d5392a2749374df. 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/USUM71921710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6403b338bf6224ae3677bf2cf3296f98f5db1e9418b5d8e8ca20dc4f6ca782. 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/USUM71920584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2031cf68840e9eeaf83d9acca9512933c047da066cbd8d1c196603eb4d76e20. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUM71911885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f033aab4c18ccbb2d7ca3072ed12d3fbe1e37c3830a1076b2d824f444b9964. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUM71908371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31568a5e2b6bfdf656e24b592b2ae9ec2275ee191ee39872688ca145dcf798d2. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/SE5751818494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a87b68fd5b1c4754959ca41dec14d700296378940ed15339d341940bdab768. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM21823738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22f7a763ad55fcbc9038d9a14657522fbc57fc5dc6fcbc6579d91531c864324. 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/USHM21773206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cffc1157356a409ee3ef6ab845b66effbb05d1231fac6452753c5d5a6d954f. 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/USUM71812136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fdb09c164e2fc6a3c1a5a1881df9e705ba1635cb9e4d6413ee76527cebeb6d. 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/USUM70957027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6acce64d8c6d330b27d27ccb40f0d6fa6eb4750262a51d0904d06d0e7025860. 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/USEL10600164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8751146103050c689defab494cb7ee789cb6057fd06c9c665a2156edac62cac7. 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/USUM71411582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ce72d7c22fed48bea8d85a3acc8aac210fad533b5c85623029f09de46c3fbf. 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/MXUM71400922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93260b2e46ec00966a9f1a65a66b42a76116b9655c2fbce04ab4cf64c4af657f. 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/USUM71700444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe042e21d6f09afabd026374625abc1d3d2236d5715a3da7b063187baded85ccf. 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/USUM70800266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cae2dc62af1c1253550b7c5c3691c2f59276f9bd6c1a13c7f68db4bb936dad. 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/US2BU1700915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e58f0b5a9a76a6d4c4a0d7c32ce34fdff00a4d27e79216cf94f9f34291bf20. 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/USUM70505108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6acce64d8c6d330b27d27ccb40f0d6fa6eb4750262a51d0904d06d0e7025860. 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/USEL10600164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2292e00301699feb80930cc633859ca1c8b260ed58b27a7ef192a986fd8ab4a9. 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/USUM71703862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac263ed12446926b9f5bcd8f1fd9febec92f5f59d03345ae13d5fd57a8ca90c7. 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/USUM71918061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9625f49abf40cfb13221be4d122b79b79ca057c318d320d042aa8bce15aa2dfd. 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/USUM72004174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e3aba81f99b7b5d2f395a9895f483775fffe20b67db72fa8601af370455dfb. 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/ES71G1944113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10493ed570947eda032d8e7559cb95ed72634aaa7d3a8f8bae8771009b3b825b. 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/USUM71713799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f53c5953e3d26134ff0dfb2c75b8a22d1692467273598d4884da4380ff0968. 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/USUM71807930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2db0c96205df2fcf331306fde9bd7d6eb7d9fd2567d9991b66ac8a05d32d764. 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/USUM70763265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdc56219c35d4573c2af4dd891fed30c5a497c95690ed9628166338251643e7. 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/USUM72002360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f93f6e8c41492a65f515ff3c3eff856c44e6c1364d4163f9cf1d16b7cbe7342. 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/USUM72001735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37d45ab2478c0e930ce743268ffffb512f94b69c51ba7467a197e89f1c2d716. 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/USUM72212073.