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 0x09b0df3a48681d1935362f6674a1ab80827ac6b36b37862dddfcb231903c95c4. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36dc9882-7c80-4b3e-8eb3-0e060de41195.json and https://artists.proofprofile.net/proofs/artist/36dc9882-7c80-4b3e-8eb3-0e060de41195.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 0x262fccf3da69bba7996f658bf27f7ed9ff34ab52846066b168c83008ed95a56e. 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/AUMEV2385779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c5da9aa928d9e967aff3763cc5bcab76aac44944802c98a1f0d057d24b2bad. 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/AUBEC1906636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a65e41d74a37737bf5e600d0991e62d52afb4574e086fe8bd3bada0fc057def. 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/AUBEC1906639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b0a6c56dd4e792022be265a7d03dbd94c025ae00d4e37788971b2e098d0291. 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/AUBEC1906641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288483fcce5669d28a8ca5c9b8174479dd41474dc1a6b4f1eb174b7dcc5ad488. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/AUBEC1906660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7b31075d2b8d855e313c56ba701bcad0480ba3982131f057abc5b063714054. 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/AUBEC1704903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554d9cd6f0a8cca4ef559d72b13f172d00622448f171c101b85e5c6f5f0ee0bd. 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/AUBEC1704908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0134bde72a43b9ee580daba453da8d8ce6efc4db126a2708da1a84412e34f5d. 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/AUBEC1704907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613eae0c271857eb8b1ff491d71422a30377cbfcf79e4db99620225443c27cc1. 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/AUBEC1700220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee3f06d762fb1c2d95a2353fc701e45466015f3f30db751b27c352130705757. 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/AUBEC1700221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d5c818671c57158722b4dc07544999c132201ece1a23dbf1966c489a18a89d. 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/AUBEC1700226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f488e5e59c646ffe1926218fd2659577b131585345c0deb0b60d644d7ae25a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/AUBEC1700219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb669895233e897e0f54625569b998424fd4ef8d02d289a5669d6bb5eb7a192. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/AUBEC1700225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45817e1cb8183776929a4dfc88b3be104183df25d6a24cee796414b03bf79807. 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/AUBEC2058875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab541f5e6e55bd249d7bc68e7d303061c7e05d9af5c184503db818e311aa238a. 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/AUBEC2058877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e82f64848f389906bf764872c66b3c5554ff2f0fab0da3a430ca32e47a9d7d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/AUBEC2058876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e6095053e55bbe36168dc0b8dd3f69f8bd7d68498c8de25d9623b1a3e44f41. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/AUBEC2058878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100d125bc2d59859cadba7612409b2ecabd9eee0ac7d97a92e31dbc65ea94ae5. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/AUBEC2053872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd321b7e7522681a2b13787b88681f6b9600bb7282ebb19f1ddb4ab064f938daf. 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/AUBEC1835545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb871f8e32cf0a1f539a2cfc8a34da8d5f70d938d7537729a25538a816fd106. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:54:04Z), 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/AUBEC1819784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30f2b2a87cb920988d40b8e7cfdae57c33007e2fc610f77ebeb8b76cd0c57fe. 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/AUBEC1715937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a691dfeec16d77899f29462b2e169e7fbd3a54a6cd8e02562c31420834aede4. 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/AUBEC1700212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1056f431b95d2d84f9108f047222d78b7a78ae22e6c1f58172aeb073d7d74d59. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/AUBEC1700214.