1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe9711d468db4f23028522fff3829b68f703af894c391d471748696289475ff9e. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8fc60665-cf16-46e6-b58b-af9655460a46.json and https://artists.proofprofile.net/proofs/artist/8fc60665-cf16-46e6-b58b-af9655460a46.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 → block OTSBitcoinBlock must exist at that height 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 0x37a89d05b717cb588892ef03bd2839b115172e2fedc484aadd6f699485987e30. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR9W11212041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62df771af5f0e71145a040c51b51721cfcf50dbb27496611003d4b1671d6f303. 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/FR9W11212042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12323fc2c51b6c5217a2e25c1380dc3634e9ca14b95ac5e6fcd57692ad779435. 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/FR9W11212055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8ffc7190bbb8cb3221e150450d5d6a98d9e30b54a05aee3a71fbdfbbe84db0. 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/FR9W11212058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fdafbc8580a9dbb2c820ceb1355e2cf8a8c2f6eb9497b438b1fe1cb814c034. 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/USGH60610066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3fbb5a0dbb77af358c9c156ebe5b7d013de5118e3d7c6fc2dc7cfed4fecfa0. 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/USGH60610068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c45accd8984a47c9c9fdc980f313eeda58254154c0f2c70149297f0421cde7. 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/USGH60610069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ab74d8878f6a91e32454123c7e84059407d45b7697f67cf178a439d83405d7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US3V80210177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3e56fffb52448d02fc409b31e3f04ceabf8e00bfed9f782d8ef48ad6ce20db. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/US3V80210178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e78b23b41a7da147f351c2ca11ca3b268848070c1288110e269020298f6032a. 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/US3V80210179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a635d175ab24556f187749e0421e5e49cedc8376ab1ba92c6ae75f069bf80dc. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US3V80210180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82386dea6ddd2836cfa1d4d7a76e3348d4cd6b530e2b4eaebb520dcc019dfd8f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US3V80210183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7510296a2d37018dcaa63fd7b75113a2b31cfffee089d741215cc8ca61332f02. 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/US3V80210185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ae96e345b9c290eb84d79024882061a38acb7d11991a5bd8b62ffa5d6a90c4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/US3V80210188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d42705d29499eccd2a3a174fa3bdc11528d933489c731c50e59b16e5be52bb9. 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/US3V80210189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a0bfd896443bb46af5d8518f02ee438dc1801a21ec9105fb5560f8a231e7d0. 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/US3V80210190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555dab2fa0dbd5277c022bd7fbc35b6ecb86db22af1a63b04d9121bf6282b68e. 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/US3V80210193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cd44bd373bd1c00562a341fa1ce9efe3dbbc7d24889fcd82884be75f3f185b. 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/FR8GV2021620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56d602d7f70d2fd4771439d2614198722150c52db4e109ede5a4ed10b139c2a. 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/FR8GV2021760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2815972e5fbbea6dac7d93d3d7118f01871431eb266b3d0aa661c697ff86c0e8. 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/FR8GV2100680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2815972e5fbbea6dac7d93d3d7118f01871431eb266b3d0aa661c697ff86c0e8. 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/FR8GV2100680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56d602d7f70d2fd4771439d2614198722150c52db4e109ede5a4ed10b139c2a. 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/FR8GV2021760.