thumb|upright=1.3|Plans for a detached house showing the social functions for each room A home, or domicile, is a space used as a permanent or semi-permanent residence for one or more human occupants
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03539e8eed130b619bdaa181aae938cc62b24b9d5024e71aeafbb7c592de597. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abf61634-7a11-49eb-b707-ab810224cf08.json and https://artists.proofprofile.net/proofs/artist/abf61634-7a11-49eb-b707-ab810224cf08.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb22efcbddfe0434b3057514610b296986f04da32963ded7d3d129d2fb4d1bc4. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/US38Y2427264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7ba3a18cb95d984af168dad5de56c78425e98328c33715366254ea310247f1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US38Y2427265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ca83b4bccae083e3475f345d26ee44575f3f30cb3a45704000fd590ca89b6e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/US38Y2427266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaa4d7123f927e6d9e54ee50d31bc1e16500600d03ab1606761e7edd0700798. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/US38Y2427267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1c9c4f1adfd1b28595cf17a7170ae67af80b74b2a8bb59a6f99997a2cf98aa. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/US38Y2427268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4f14d4c044382796285e66cf0924dbc5521b40a42a31b9b1f28346209d86df. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/US38Y2427269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf6cce4b7137f49aeb8674a3e70ba76b9292b85ade05ab92ef917347ccb1385. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4DW1607616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5cd425ebca50e1b471cbab302783c62e38e95a3d4ac494d75066c5f89a3a61. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/US38Y2427271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c763111ec19168468bebd1e8939e9ff070ec37cab04d125764bcd80037d1b4f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/US38Y2427274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cba1cc9a44aeb9b9af1203483b413e12c07c25407b71c5ffaca87f06c037de. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US38Y2427275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb22efcbddfe0434b3057514610b296986f04da32963ded7d3d129d2fb4d1bc4. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/US38Y2427264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ca83b4bccae083e3475f345d26ee44575f3f30cb3a45704000fd590ca89b6e. 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/US38Y2427266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaa4d7123f927e6d9e54ee50d31bc1e16500600d03ab1606761e7edd0700798. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US38Y2427267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1c9c4f1adfd1b28595cf17a7170ae67af80b74b2a8bb59a6f99997a2cf98aa. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US38Y2427268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5cd425ebca50e1b471cbab302783c62e38e95a3d4ac494d75066c5f89a3a61. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US38Y2427271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2366248d2f061ca0ef4ebe01fa6e98e06832b6dc400e67d0d30d6a83765e87. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US38Y2427273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff1ee3241709c842b8a93a2f064b1a6492ae5b7eb2b7682b58b4b5865ff6686. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4DW1609449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf015d48c41461e2dbd774743b5fcb8c3566c2cb3e321fb3f12ad84b20d3af3a9. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QM4DW1610378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33ee5dd439f4c009a42c2097fc1a92c68d8eafccae7e72d700f81ad61430d99. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN51983542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9864410bd0f2183defcee9fc41ddb5a675681a2472dace8f6322eb17c007bc. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZHN51983546.