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 0xa55a403f433587aec7adb15f803c3650685ba57eef1659bdc14771359a0ffc41. 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/38004191-6b00-494a-b9e8-d73a192ff3cf.json and https://artists.proofprofile.net/proofs/artist/38004191-6b00-494a-b9e8-d73a192ff3cf.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 0xc44a875264d07ab3edff3d8430a5237eb9b67a04a486b995cc87ca50207f186e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US2CT1010027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aecd75e2c596e7a52f63251620510e5592a0b0d74b26dfa373e9794f038624d. 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/US2CT1010028.
Pop Music / False B-Sides (2020 Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63028e6aaedb9394454e26205616854260ed60fbe4426ce64087f6357215b44c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T22:58:11Z), 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/QM5VX1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118b135cba8ea6103814bea663ef2f4ceb4324fdc235ae7ac93bca6ad15d4e3c. 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/QM5VX1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d343010f483a6b74f4da144fb4c9545e69452eec54e7d44c997550be92cf0e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:35:12Z), 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/QM5VX1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f4bf3d95c4a2343749223ece6ccc9914df8da3393111e8010c73841490db1d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM5VX1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f640894e15e8068bfed94eec9e13bf31d3b38f3b20fda20cd836a203bcf169. 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/US2CT1110023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee5934d324ba8514f7bda7f2e01cd2ed312a7eabd6f4552459c53ecaf050afe. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US2CT1110025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc93bb8df950d5351d37b32e3588093675df2b4a6b70fbb50a9309983baea662. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US2CT1310010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10c93e76b7f4056179b939960108485dc7718a90165548a991f461023faa869. 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/QM5VX1500145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43441c23d539c8bf69d1b40a684138f1919256c16b8d1ade87fd156bebe21e5. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM5VX1500146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210976bd2d43e9ead8473d3839f77639a3af84650aa0ba4abcfb20f961f1e843. 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/QM5VX1500147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff7da50bade2222557c865f55f1faff251aa7476731fc9fe77ad95d2c72906. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM5VX1500148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a25e0f50c37278914ef601cf8f0ef31d3965c35b9b7d5e11dc1b4b85647b18. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM5VX1500149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a98d2dcc02fe0cad5a4d3a45a934b64dac009882cfc2eecd75c3d0f587408b. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QM5VX1500150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8558069fec5a0dc9e0b1ba5127b3a07c29ef09947dbbb6a4ae96011147c25ab8. 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/QM5VX1500151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38655959410acd3a4ce5a1c823c7c682f9840bd9ea7bc7536334d98f1bb3f80. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:01:31Z), 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/QM5VX1500152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc7320e97680cd3a7ba01b67632609a16c39247afbaa698481c8333c6df3d49. 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/QM5VX1500153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fc92af02f16b337c27dd2a25dcaedba36be6f5383f584e96e268c4dc7450de. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM5VX1500155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b818dbf21ff4bcb1fbc55f9f260f10566378d8377fc8a7634d0863a2d02327. 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/QM5VX1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc682b7e0f5297a15d3824510d119c3c2121b4606f215c7ca36d31913ca8483e2. 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/QM5VX1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0573e7fc61badad38153d2e38e5edb970439dabef8e6d63a2f7dd791df0d53a. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QM5VX1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748f7a3bef4e49ef649a5238ac0bce197a979ead930f1eb6a751539689e9571e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QM5VX1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0829db964ab8de1af14f1ecc15709d9d82cdb362afcbd229ddefd2d00464576. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM5VX1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1ef4e1461da2d0f567cceaac2f288e2af0ffc1da7462989f1ccaf78652a9e1. 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/QM5VX1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22cf5802b49cee1b66d692497366db59ba5d913d91cc5dc6ee8437086729faf. 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/QM5VX1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf01243850c42b87d4c58caf6da1d88f6049b8ba1151ead112d68fa475997ee. 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/QM5VX1900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce15bf2ae56694584239ffcb38c745b78fdf3da2ba585dc984b47379574754bb. 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/QZTV32394510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c321bab9c95af5e0d52f84ebb4f287d0e342fa59a0f1e7366a31cf7832a2bfd. 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/QZWDD2391747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361d175d93b35d580f28c732ec9063a2623d118dc6c1949a85e7b526858917d6. 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/US25X1084099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb5f5717e46dda519b389c37016d02b6d734186ec2df41e9ddb667981b517ac. 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/US25X1081733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2a14f11ac4efde2f41dbc373e1a13cb258347d93d6ba35047a39f78eddae7b. 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/US3D32408801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed27579af49d105305b9387391fe51b9b18601553753dff0194a331cfee84da5. 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/US25X1088854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bd752ed5dd30d10abc4d0d7aad5b17904ed143812e753037aa4d962bc79948. 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/CAN112500284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d02f0b5398a111c7ae480b22453e908b403891dc8b7c6fb7827443301c1f89b. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM5VX1500130.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed970359c6c713c47fdf913156e4597f2babd872b132234c9728ed4d7fc3c26d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CAL451350504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa78a37458a21527c04b32e351e78efc7d529f56b8f07bb543f459cb087a80f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QMCE71303045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bab1cae4ea39b648611b5b47de9212ec11fbe70fe96059a0bc18acda21a041c. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZK6K2064610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaae30a984bd145100c0cadbfdc21837440076f9030c7eaf77a11a96ea1c274b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBLZC2000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa061cc0478d5f11534a823f24e53536d2af1a34533e1fdf38160557347b5259. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZFZ62296359.