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 0xe2056955fa2e425106e89c29f88b1de68dc6d1fd85135a0066bde450f65de0cd. 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/950bfed1-3709-4db7-9d46-6667f0e2d811.json and https://artists.proofprofile.net/proofs/artist/950bfed1-3709-4db7-9d46-6667f0e2d811.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 0x1efe42470e11ce8e547af5dad3dca10a314fb1fe3f1fa7069d292b0f1949cf78. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USSM10303881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4be9b839934941fac6b6b899646b57965ea34ff506846f414679911093fc0f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USSM10303882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bfd667b609b8809fea1b7df01055393a4f3b69c24511acda01a819b5d46a2a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USSM10303883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2d2d936d375548dd78f01facd1af46c0f454e6fd1ddbce601357b36358dca7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USSM10303884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f58fc38d376c10f65ac99c0719993f83c4a0927fb0372c403f85cdbe88416f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USSM10015468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65479841f9aa56152c85a0260200bff7876de5cbe40640b9c78a9c781c3bf193. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/USSM10303885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff0cd5fa56a3e994e50b192f5af967d3a5e36ffc76d40bd07e018ded364171e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USSM10303886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf2eeb3ab1655571ce625113879d799ef37752121841b4a8ceca5fe4aef0bd2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USSM19925322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29a1a53b49d604143fe8e97898f099f95cd801614d65924c6945fddec8c2507. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USSM19925326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9466ea272152afa9b247043c8240d5cab705914975011487b245aa9d8abf3ad0. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USSM19925328.
My Feet Won't Move but My Shoes Did the Boogie - 7" Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1936c95d49c261bbf452864687dfc739cccd014ef2dfb382884a89518d95820. 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/GBBLY1101262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bb76f1076bbe74a287796178d8df482d5ef15040055f86019be843f4cb008e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBBLY1101252.
The Sound Of Philadelphia: Gamble & Huff's Greatest Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d32e581731f4447fe2a3beddb51c3bbeb2fe87d47a26e8f5a32803c9e7fe6e. 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/USSM10202944.
Do It Any Way You Wanna - Keep Schtum Re-Edit
Philadelphia International Records: The Re-Edits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427442307410e4f886b574728fcfa22b2e1a3b237cfd67fae10be5f1fb52ffb8. 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/USSM11105374.
Do It Any Way You Wanna - A Tom Moulton Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48005137cd81e6649b5a29eb6542cd2e521b9a2d7605a322d6a9a7dac799be4. 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/USSM10901917.
Here We Go Again - Dave Lee Philly Stomp Mix
Remixed with Love by Dave Lee (Selected Works)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc44643b0e59352828e8862a87e728ae817083c14a53ff0963283bff1efc881. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:57:40Z), 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/USSM11508585.
The Wonderful World of the 70's - 100 Hit Songs (Rerecorded)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87d5c44dc31dfb149209b81fc094292fc826a8a242f08c596af84559257293d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDEI9002578.
Philadelphia International Records: The Tom Moulton Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc683c8d8ccd1113646fdd18cbd8d505dbab2c3e98900bbd1eef8b5d790c0ff6d. 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/USSM10203126.
Jam, Jam, Jam (All Night Long) - A Tom Moulton Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc710c30461e4c3447e888714396aa9b433232d11fd73362931d5dc2a56b77d27. 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/USSM11603239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc683c8d8ccd1113646fdd18cbd8d505dbab2c3e98900bbd1eef8b5d790c0ff6d. 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/USSM10203126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2111dc701d733fda834eb8d746b5d0a317ada509ca055fe58db4660b25b146. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USSM10028312.
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