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 0x4f5c1c4df895ad7c6908f3c3b4199c5637d79e64c7f7a5d13b75726076b12a43. 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/43068991-ff09-4d52-a254-d4f430d7ca5b.json and https://artists.proofprofile.net/proofs/artist/43068991-ff09-4d52-a254-d4f430d7ca5b.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 0xcc30cd15b2c8f93a71ac8ba63683a12eb965577c1e224be6a141dd09fde912b3. 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/QZTB92317617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae0dbaaf39adaa939558d8e8d950a25e2d4251489986818740b777d2e8f62e3. 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/QZTB92317618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a8d4767d3039efe32dc3c960cc0282e4fe487e0b7b70d217791b63eeb534cf. 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/QZTB92317619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486c08b51e282c2ab91b1dd22dd76643054719da6648830820fc2790dbf096df. 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/QZTB82332416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ff3c51a375b754c45ca35ca25b3c717ad2681d29732cd06bb1a4152ba87267. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZTB92317621.
2000x again and again, Still here, here, still.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3e19c3603fc2051e603ebde8648405e3e2a07a12ef8807e5631e4a3ad73da3. 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/QZTB92317623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b1fe1b1caf1cfb765fc6dbb2dea597b89b3576c7ba5363e96c54c6e4aca82e. 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/QZFZ62195663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd167fc42a307da31840a436b6489543c7e54e729c9020267a101bd189ff200. 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/QZFZ32089655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317de0e15e901532bcdc0439a033f25d42e35a2691e116bc52590f19dcb7649d. 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/QZFZ22167651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486c08b51e282c2ab91b1dd22dd76643054719da6648830820fc2790dbf096df. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTB82332416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d71c703ba230ba4367fe6a52b297434560c5609f3512b849a46a26262342e2. 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/USYBL2001092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70aed2b63bfa4214065599482669816c0b76ac99a335add7c9efeadfc04a91ac. 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/USYBL2001028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c05ad7e683ac84a75d8dc89d032d3fd1762f2406ce1f4e39528f77640a18e8. 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/USYBL2001029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d96e8fd993cd2b9a5c18334e301ddee6e8214357dbbc30aa66bc5029e14e93. 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/USYBL2001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09792e263f082486cabf1d2f483e17007f15ef1334958534ba4f34e5eaa34b56. 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/USYBL2001031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadd31a63498122850020d7f340745921f0cc7b21ec0eedea1cdf03f03ee27e9. 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/USYBL2001034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa328326f060381c6bb6ea400b1c4ae795b3749bdcd779fc09da5fee9b456a2. 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/USYBL2001098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba49a30fa5ce519f37ad39742c4874c7acdd4b4770abe3b8cb7d3cf23ab90ab2. 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/QZHNC2084594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134d4c3d06ea11800de957afcbbff78bc4f32b258d97e34668ee9cb3bccfa689. 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/QZHNC2084595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d97c478fc5d4da94f8abfc62cc2cb345e330fd93b2e1ff03bb63ec33b862c08. 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/QZHNC2084596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09bb4f930facb9f99875a7f3b5719cc4f6ddc1da1bca47491c8d62b47e026af. 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/QZHNC2084597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610be1cdb0c769301a4796d68f746775699674e9aaf6bcd3c28e1f8d88fd0f3e. 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/QZHNC2084599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986b5375f8e634c392b99dbc06e0f95a777c9d8143ce26092c3e17122a1e793b. 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/QZHNC2084600.