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 0x62c8d6bc1c6b16514abe530e77773b8d13e1855da18f1b8f3ad712022b9d3e92. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63ee6c73-5565-46c9-8cfb-0c5a060183f8.json and https://artists.proofprofile.net/proofs/artist/63ee6c73-5565-46c9-8cfb-0c5a060183f8.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 0xf65a4c8ebcc4c978e44e4cd1ed951c5ca8422ca66fadaf49c569ce287fef68cf. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCABY1450691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7a7451de9d1698ffb8a5265c2fd9c2463dd5113fa0dd73131051f78e0591af. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCACT1675804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226fae206a80ab09ca2ed12b59be90b3f645c044b6456b4015040e0b7db456ed. 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/TCADE1747648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de36a2561eee2464f17c1c7ff39201c9c198e35c5bbef6c3afc417accc3ce2c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCADF1798882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c9d0a0fb84f694e13b3c066c716620eea27ce5bdeda01ff408819083f394e8. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:23:16Z), 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/TCADF1798896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f18ec5843b2dae31484654429a7fdebec0db7ef7a0f43ca9dc815bf12c0c40e. 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/QZES71897199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c8a6fc7c9c2b71d26165d195586844f5bba3619502852af579059bf87d2bc4. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZFYW1931629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86457b2adcc5ebc26a1005cef0504a246b3196a53e3493a64501b0f1de27f6c2. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZFYW1931630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb315cfa1c2253ac9a7cf94a676ff7745b8e98a21d54e07bb24e349177e4a7c80. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:49:34Z), 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/QZFYW1931633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f201f0baff27ef6b6373d527ed4ce4a58457f4a718d2368b41211b84b1b44d. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZFYW1931637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0f3364b958361f87afa12fa0503366bb559ced852d6c016fe94d467f88adeb. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZES92187238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35e27865696babfbfa00358c605ce3b6c1271b485cac9ec08e1732bdf10992b. 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/TCACS1688634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ab726ec3343b60a8125bbfe679205ea1c1ac322997e904a878a2c00929a41c. 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/TCACS1688643.
Clear Sight Christmas (feat. V. Rose & Young Noah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195a20808a73faf623a014b3c085b06b338c0daca9b0e2726d6a019a7693de86. 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/TCABK1268141.
Limelight (feat. Young Noah & Eshon Burgundy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbd2c73b6699c97e990629f3ffb28b5d83091e89ec3415b06ea6dd8b17f6658. 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/TCADD1786312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf164fabe47405ba85183a8c1ed20c31f2894f0a96a162a1a2c27abda79cbbb0d. 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/TCACY1735620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259f2aefe71e8e6de48ae9a414767f0b54655679c784f1927492db075af17b87. 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/QZFZ61913204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ae4d3bfaca355c4589fbe80730e766876ad945195b6f5b1dadfad96197482d. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USUYG1066191.
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 0x923bdec0b49f7b3243d9a54a01b1a8dad0c933ad0c83d5502bee7bde24ffa6f3. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/TCADD1786335.