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 0x58e3a60a5095382f90899a2ab835fefbc5d51a224e4b29a1e94a69b2bab36b7f. 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/da98bd58-f9a7-43a8-85f9-65dc83b63bc2.json and https://artists.proofprofile.net/proofs/artist/da98bd58-f9a7-43a8-85f9-65dc83b63bc2.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 0xc8d53575703712c6373ecb7eed2cb461a16095f8183259e935f4fac130b817aa. 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/QMDA72211949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225a11ec51f7da8a0a001f68b3d27894893c5e8d59685af28283d27de17c57e9. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QMDA72211951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf781b55535f5be30e126c9352bab15c48f6c4507a3da29ab1051c18fbd255f0. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMDA72211952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d6d8e7cf2c4d7d3dcea71abb5e011b4c6579175ccf7399228ae5b0fc6f129a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:21Z), 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/QMDA72211953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb158203781f28c3d8f830e9a2cefc986c7a9ea8aea5153513d3a942a26a68f5. 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/QMDA72211954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3c4f7bd194772306cfea1d62fbd6982bccc9b278d4393976dfca730cf6c4d5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMDA72211955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18abfb96be498da2513f515c477486c24a3662781a16eb9bc7a10ba0e24fe25. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:24:43Z), 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/ES71G2307017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0fcd3e1b7ca9a621675f06f1b276021dad1f59d40eda1a59f902e100c1eaf5. 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/QMFME2391461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfde22979c533b27512e75ce0302568f86f27ace47b3937cf74776af1ed65bd. 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/QM6P42423008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa95f9981d5948cf705a0fb81a49cdc29c654c414660934518b9cbdbc944fb53. 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/QM6P42423007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f74017d78af74ea90481935e1e80b18cd786e8e0a9bdba2bdd681faed2f9ef. 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/QM6P42423009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bb74327b1975c340b0bf6361ae71af4e33e7a3dfdeddb62ae460f43e6660d6. 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/QM6P42423012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdddfd85f1e104cd94aada1808a2aa1da45d01c9090732882ef0c74f332dc7b4. 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/QM6P42423014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecde52d6ec122885e0bab1485c84561801c60ff4602a525ab6b42d80b458c72. 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/QM6P42423016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446be60faae2d45bb77cea08511a6120502c194a51c9282662b7c3db3b68e333. 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/QM6P42423018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0241dcde53cd5844cab7c7c3bb19efab9048da4ec9cb96a5ab5fe96a1698a0. 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/QM6P42423019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9e6d13433542773f9d8676134674cef1ce3d4ee9805155e65a4c6cfffc8113. 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/QM6P42319239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f341039160012289f6a8da002a34d72af4b30785f904b7385d8ed33414a420. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:34Z), 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/QM4TW2531373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda88ace7b4bbea98d44211b81fdafca17c49db93ef9aafb2b9746e5c39a8845c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM4TW2531374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a825e44366af64eb29821ada9e826565326a566497f98b4e6ad949602cce5f. 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/QM4TW2531375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32d7a5f799460af7bad428290d6ea1c2cc3368eabdb16257f7fb8eb8eb75946. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM4TW2531376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ee09cd3c07fa732db1e66440d927b334fb83e6cb5bff4a99f7d0b22aaa8dc6. 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/QM4TW2531377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6a01cd657df24fff73ae1a96dfe6da1cbd649a4f71a799d788dbb90e558f0d. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QM4TW2531378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc396f2adb455ed6976e3ac43fb8ecf34902fd31e7da0773fedd7f0e1b15d9c41. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QM4TW2531381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa830b47096e4b1119db1af5ed4e411ddf421f93a636c5b4f2bc2861b7f9c8a5c. 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/QM4TW2531379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef50e9679a22447a2be830a51616fe3923861d1b99c10fdcda38cd1726aea78. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QM4TW2531380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ee57bbc466199672f4df187aa00af6fe6050b32bee66f8d0d7091c784ff868. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:09:54Z), 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/QM4TW2531382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2690d05e240a2e54eb5fc484f58f2df73858cc5df9a7dda0b44e0da2d8dfde18. 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/QM4TW2531383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a8bdf1d6c3910dc7835d7c6965e1e5b2d0168f43531c6d53df84e7ad7933d8. 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/DGA062447041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8564ddd2035987d46298e16e3e74555e21b528d2050348f2ad7f276a79d1ec6a. 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/INA4Z2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc24ed1d41616631041a0e3b085f0cc219cfb602f051f8e2e88b5a26a6108727. 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/AEA182400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0e8489fb7221403dc9ffa343741692e538cafbf13b1d8cb94f5075308b5b69. 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/ES71G2418535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3c62333d974f6e5fa4c9e8ac91f7c3fc1aebc959093fa465c04c2a4a15cf09. 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/ES71G2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2cdf521de255d37279df1f2b62b0316e18bb7717cd26ba5b2077738858169b. 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/ES71G2400064.