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 0x86421bca827883e4221eae57ab7b2415a4837eda55062d8b1089aae909c8e09d. 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/bed41cad-88bf-462f-b17c-91fc10775f3e.json and https://artists.proofprofile.net/proofs/artist/bed41cad-88bf-462f-b17c-91fc10775f3e.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 0xec987849c88c5519bf5e6cb4751b284ce9d865e35496271a3c4c16a7d78c0241. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:57:59Z), 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/BRWMB9702118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb8532a7c2d24803cbe0eada1beec1c30553f1d40366275f8d6b8987f4a5290. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:19:12Z), 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/BRWMB9702120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ecb2b66f18d7b254a90c6e01bf8af3a1aa2038668e74274a61b4c7a1f31215. 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/BRWMB9702122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a96a58085fd4c7d4fa104f1296010f3d9f545c05b8ad226bd34f5b15db5822b. 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/BRWMB9702124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b836f5f875ca3d39ae7186b1feb125b7e4556c583d5d6a2bc650ec6fbdcf16. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRWMB9702125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52212b85de190e1c3256cc801aea8030f55a1f13a34aaa8b914691327952ec41. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/BRWMB9702126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59c8787693b3c672d8605f7f760b633e21b8e5a1ea037cf75698d103b963bea. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:09:02Z), 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/BRCID7800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207453929273e201b7903417854460895210134121142364680fc3a64dd458e4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:57:20Z), 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/BRCID7800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc546a3b0a0a159aa6dddead9854041b0d7d83844ab5f1fef937ceaf2470992d0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:46:15Z), 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/BRCID7800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608fe61300742ed7ca9d3483fbf5f98742b7d3be7aa75f95e491f5aed10921f6. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:02:48Z), 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/BRCID7800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e4c80e7883c9534d123f1931d8967fe3f57d46089c57bea73bdc58db0134eb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRCID7800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0672b6458be5f2cb4db4c4fd1f2349630952a9c2b399357b67d170dbf58a0c16. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BRCID7800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95ec7a1b2dbe3d256c809187631d9829e371580683a1cb057e942983e6d8c4f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BRCID7800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecf2055a1639412b52de1c74915748c468208d6c33a7eccb8430c79a8f7c23a. 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/BRUSA0801239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5f32dcc44ea1443c3a06a77495bb7f99ffd05c0060c31d3cbcabfd9ae1c591. 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/BRUSA1700424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f37819927d6a6f10805e8ac77b6f1ea75ca8c49b6d79ac54f47d0faa49f7a3c. 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/BRUSA0401275.