thumb|A bedroom in Germany thumb|Bedroom in the Indian Mound Cottage at Jekyll Island A bedroom or bedchamber is a room situated within a residential or accommodation unit, primarily used for sleeping
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 0x30a355cf287e8cea5ecc11844c4b5f0daf65f2ccb1c09fb2c3e7095d6aed21d2. 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/150e35d7-d995-4ec0-aa15-d6933758656e.json and https://artists.proofprofile.net/proofs/artist/150e35d7-d995-4ec0-aa15-d6933758656e.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 0x2b5c912d803e8c7318c60d611d299e7f8e91248377175d7bf511b106857183ab. 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/USA561299677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513461eda879ffa4dfaaa2f0102793aa44cb7d671017243a484531ffce3ce74e. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USA561319156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbc8df20dbe0fac8b0e334ede4d48a4393716b05a28cb7730a068932a90d74b. 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/USA561319158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79db0caca934baaaceb10eb113e1b5c700342aa8bc89b509ac1a5b159a79ad00. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USA561319159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a07c1ba20c373cdd5ce68a1470c4cc440456991f8e06473d3b3b123e2244837. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA561319160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c9e07d7eb9c3e91be26c49367f23057c52f0d3e8e9bdd9aeaccec045958332. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZFP51971548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e4cd41f58ec7dd73751c4cb0c4b711f3e48d620793458684ae0f940aea51b1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBKPL2144793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa30599a55a5cbfda84a6c2ea32ff024568583475411c92f52fc7759fb97cd0b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBKPL2144794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74033d1c49622fb198f755b1a55aad1b12e4ffd5df519cee43ae83891218dc7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE62M2281277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140bdbbe5a4ec797c6b6b06a30f9acdb915bcc2368dc35f30cf4c842c3b2dd76. 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/SE62M2281280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a055076063b87b18e18f3e35ce683c24a0039ace5425797f72202420a67b5f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE62M2281281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d02d070cdcf953b713bc543a5959dcab4a71ccc8ca2dc079d879538b68eee2. 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/SE5BU2203391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293614075b80defce96e08bd9d48186cf732d6c3a5b08c1d3eac0ea798eb13b0. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/SE5BU2266682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6785c2da7f287219063bae3b8974124b117559b8f92f72a430d07d531a316a9f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE5BU2209880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590895ed3c959a33450d05e25aff5a99fe60b0c8819301a43942142a0d48850a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE5BU2209881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd328c90c2ec3f794285dff333b86664a49761cd62b89a8a4791d8fb820d11bee. 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/QM24S1813378.