right|thumb|Spherical cage containing watermelons in Russia A cage is an enclosure often made of mesh, bars, or wires, used to confine, contain or protect something or someone. A cage can serve many p
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 0xf84d0c630c27d540af9832d02dd79bc892dff367f384f51daf1e0be92bfb8b43. 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/d57f11e4-78d3-4420-a7ce-ada85518b2a7.json and https://artists.proofprofile.net/proofs/artist/d57f11e4-78d3-4420-a7ce-ada85518b2a7.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 0x30ceec5f249e94e6c8e8fc1dcd1554748bacd10b51f5bd6c442b8d3afac69384. 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/USA560446031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f34b4a07f8d479234f9b3f26597e82c9a36b762bcf6576075410cc25de4409. 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/USA560446034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651d2c10f5ea6484e1a346326ed5c84741dd784e26156219b81e7f7a6dd03bb1. 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/USA560446035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe391c9b9999b5070ca2c55483973256cc1fdb73a87a48860614ae713b7d86cd0. 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/USA560446038.
I Got All the Toilet Paper (Toilet Paper Gang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983f286d5e97d81686037c824292abefa9b24370ac5f8c100ac50de9bd2e2b4e. 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/USGH60610051.
The High & Mighty Present: Eastern Conference OG Demos vol 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f71b0f9da451a3a2724d1a6c2fc6bdf6fd9644439ae52027378a5fa69b42a89. 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/US92U1800704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0ef7e172ab9bb78befa752086ad9cdfd7fd416729f41bc085d871cfdfe499c. 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/US92U1800702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b18cca2278af130d66d26af2dc3c57d7d376c80f2f6e7063ebae71c30b2be9. 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/US92U1800699.
Man On The Moon II: The Legend Of Mr. Rager
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c00ff607bcb931f6d16f3448a4218d5c4d0007d16b0124ec716b8c732fed462. 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/USUM71025504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cef986460afd3af4bc7f2fe3b4f3f9025c2489e3ad7bcae3b205c0d78a5f0f1. 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/USA4T0402709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb953fabb70cdd44ecb59b94b063a0cd2b4d28956847032430bfdd7b88891bf. 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/US3V80310137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5ae9a3ab4558b621bd5285564a88ef9549050c91ca2c17d3485d737faf729f. 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/US3V80310142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871c444eb5ce3aaed7684308f1032754ebf93b546d1b43c844f46cd4809f255c. 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/US3V80310148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa187408448ebe8ad10cd52d220524fc4a05291547a7fbd5a8fd66de5f361dbf7. 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/US3V80310150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5be7cb56794916c5152e7c634ce1183c43c2db6baa5b950a4d1f0b34d6fa30e. 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/US3V80310153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b0b4bdd5b0f74be70d5a1efa5fb34633f263388c5b5c7453b1879d5bfcc795. 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/US3V80210199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61512bc007a29ff2217de156ca1e6cf79a5290a9a8a597b832ae79ae539f83ef. 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/US3V80210207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53a5599d1a5504f321db72639fe262e5992695f6d8c1c6fe0bab49e2e96217e. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USHKR0910119.
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
Every Rapper In The House Shut The Fuck Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7233e736ffc13c2f030584bafc0544b6a9f4a3327aa9e37e419ad6f062075d. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/US3V80310155.
Bully (Music from the Larry Clark Film) [Digitally Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0941f7c40368b8870dbf508fe42f5c2bb4f75c250304245a5c8ac2d7815d7b. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USGZ21454041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4718d4055b3fddb27baef423bd72f547fb7645ed1c740f3a006e7b77081e17. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBQRF1021325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac636756710d964af362fe4c763bc965ea380b9f51dfc48c8f57a87f6f10e3ae. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USBWK0700062.