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 0xe9c73a835a0139583ff6bbcdb8b5d919111186e7d3b0720c9c242196558f7966. 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/8b6db69e-9634-46ee-8b9e-980965e6ba30.json and https://artists.proofprofile.net/proofs/artist/8b6db69e-9634-46ee-8b9e-980965e6ba30.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 0xfddf722cd9de9ed0bc4e5adb5ad2f73da1fe0f230c1ae015d38de64d3b15b28e. 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/TCAFN2131939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a4a667cf2ca081a094526731e37cef6e00dbd1d6bcf1989431dd9f0c54e9a0. 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/TCAFN2131985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1dac69fd43fd8151e3eb46d1e5be919c93163c12002c067f1f2bd3877960e4. 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/TCAFN2131994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779babce571824f75e22abd16005288236ff519e8dbe1ae2337778b737b38de5. 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/TCAFN2132317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035705fff3d32220e64205e74c941d6e0c3c8c99decd7bf23d641f4aa9dbe0d1. 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/TCAFN2132321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a456c40fc7fc53727013e7e5920fd73a087a9eae0c0c117f2b40dd16c28db98. 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/TCAFN2132379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d8d5d2adbe5403474f8ad3c9e3048c7b1a872b8e1390ca8a9fb0c15be30b80. 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/TCAFN2132425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36dc82bfdde1d43c45d9a23378451600ad15de3318b5978be9bdb36a208c848. 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/TCAFN2132440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28db8c725ec9fd282a03f6cd9bbfad6eac293ccc4146bcc802cdc0d4bf30d16. 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/TCAHO2339816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6cb08a3319971dfb09c5e30c2dd02217ce0f96ffb3dac8d391e292f529f1de. 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/TCAHE2386910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4828be4308110cfa394ecd3fe91ecb181b8b8acff40b520c79f0d68900b9e81. 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/TCAHA2328338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728b00475f375e478e98e89de336ad63a68dd6c3cb793522407c70c03b70e2e3. 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/USCGH2394816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bbda7c975f526edd041a562c48cd6e060c0e39a0f365edc26afdad516eb25e. 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/USA2P2312429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46e0115c282abe0800b83d77b8ea99d9d1f4ca42f884688c333b0c336996bd5. 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/TCAGY2350690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f567bc45ebab3cb5b17376bc8d5432159fcf65903e388fbc72e41e431946f9. 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/TCAGN2260505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083d82667b9bf0748534e34e1a1ad49595ade14d6532a9baf71e39bb63240907. 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/TCAGC2284056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026c220401772f3e219373d6a7d2e0ee8127f39ff5281b3901794621223ac510. 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/USA2P2133694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01b3e9db03cde58b9674f04eadec0a1f9f38084ced249422d351be2ad917943. 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/USA2P2138940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3f48fbdfe4abf00ceb7aacc3a20c197789f1efab1ae86532650faa09b1eb15. 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/USA2P2138939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026c220401772f3e219373d6a7d2e0ee8127f39ff5281b3901794621223ac510. 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/USA2P2133694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7d7ce39d8dab2c0725e99b5468063b19a698cae14411ac427a61c2547a2cdd. 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/TCAEW2016432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0744ece71e30003d9f301153f35b8e64e8ad1b85d08d2dc788e81099196ae6. 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/TCAEK1927301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2117ba587bb69a710431e3013a3980fac9a08f62a1b248c06c56c2f0aef91b12. 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/TCAEG1942896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02cd3ac8c4da85b91ea69920d7c16e89180e5b4ed5e264ec5128ab6671484e2. 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/TCAEC1959108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0872777f7d4e28fe24b9e595e3fd57148633dfe2de0c0f47577dc191cf54575. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCADS1880560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c50659736c4dbd3d9af7fc1297521b9a47eb8198fed4de36a5b38ca4250e079. 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/TCADP1839755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bb66caa57e942091353f56df579873849bb63a8a6d36473fb575c808a194c5. 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/USA2P2320639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5310084ad6f52e5483dd8a0f564bcaac59fc19825a93bdd373a5e01023088d. 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/USA2P2327164.