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 0x7511fca2f62f42b55ef7ad0c2e4a7b91e4049689ba5e01aa3828e7f5b00b06fd. 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/b158fe1a-643f-44fa-bf94-94a409c4f2ca.json and https://artists.proofprofile.net/proofs/artist/b158fe1a-643f-44fa-bf94-94a409c4f2ca.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 0x3bfb3598bf1b36efc99ff85d396c0eedf3ee508b718280a4a6c55541d9f4f23f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/DEUE12577081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bd03f4b3eb8b06691c252733e38028d5be3733553d8e4eaf7a817b2adfeb58. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEUE12577101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134509a1db9a3837c5d83e8b5abdbbe44b17a3b1faa92d8b2395f4447652f8ee. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:03:55Z), 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/DEUE12577104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83b3d1bdec5783eb92bc64a7d3b8c22dc63dae0dd93cdc9a30e26b49ccbe215. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEUE12577105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e2b4a80b25725522024a7ff72430e3a73f910b6907196ed74e0c478cc18c5e. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/DEUE12577123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb261d006e71b7e4076ce24e9137cd46d35468ff92b4477cc26acaca0f84bd8e0. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USFI85700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8b27fa9ff796c3606f8ce759660ebb69d486565e72867d3c558713beba3573. 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/USFI85700182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd1b26755b5be0dd209021c137d164cf1c4ec946d3682e89b6049c85ff6160f. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:03:02Z), 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/DEUD92396083.
We'll Be Together Again - Remastered 1989
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217591f5e47a7f997c4b8ee178198e22fdfb287ef3f14560dfe24575d66f83d1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:42:25Z), 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/USFI86000692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f20b0bc71127019898522189229b528a8900801a8e2ce86ed2e899f0f962124. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USFI86000695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b3242c6725e523e12bf06293643f30aa4b2f251b9f0a69617e6d1bbc320669. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:33:41Z), 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/USFI86100908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3820ef154173d2d33e670d0f53dcda6aae06c4599c4778c4e67fba4f158d9d. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:53:13Z), 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/USFI85800268.
There Will Never Be Another You - Live At Prelude Club, NYC, 1959
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2400c8dc39c1bbbb19300e72ad73119f73e3efaddffb87a2efcb3ce574bda95. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USFI86000645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02462bf2a18af03424c5b5c41500a70deff2b709a7cdcfdbf6da8473803572eb. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USFI86000647.
Bye Bye Blackbird - Live At Prelude Club, NYC, 1959
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d47d0b15bb7fa6e7e7df4baba57fa415486dcdbd0eba1567161f8be71ff2be4. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USFI86000646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ce1850a2988cabe638cea88517706de9f11e66488ce43b80316cb390b648c6. 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/USC4R0820047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81df66ce238870dcea9a9a41e5cbc9e729845e58d5735fe4865f379c93c33a1d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USC4R0820049.
What Can I Say After I Say I'm Sorry - RVG Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1954d3712d69f9b5d26c9650e7c73698258f69aa6874419a1fd6f05dd7e419. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:13:54Z), 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/USC4R0820050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad022f64028d9dc535a5be51bb1ef79497653312c3d1effbe50aaba71780ca2d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USC4R0820051.
Swingin' on the Korner (Live at Keystone Korner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbe3b493e48d23c16cd2dfafea7b6b49aebd6fc9d9a43d5a1f5a23d1af7861c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/DEA311607423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b599da82040e4ff62a5e4b2f4b32dc3fef5eab4041cfde371308c34566e1c47. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:05Z), 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/JPS801942555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c32d11e906421bf81f2c4577fc932a92f0ebc7112fe5019c17f4d10b332a6a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPS801942559.
Groovy (Original Jazz Classics Series / Remastered 2024)
Essential Classics, Vol. 894: Red Garland Trio