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 0x22256669e82d3a85b0d416c2032c85015ad9f320e797d439e5c3d6e73c46671b. 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/026628f1-f081-4a84-a3fd-94dcb40534d7.json and https://artists.proofprofile.net/proofs/artist/026628f1-f081-4a84-a3fd-94dcb40534d7.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 0x569f0d50e9aeaaf69a4999d3aed121792358a6f0e7ca7eba4f94142c7af131b1. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/SE6A92024608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964d8d3f66c3d9db5aa802dcaab68c199e199f5545b449818c8e9874dd889532. 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/SE6QE2097495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350aa7f6c70a070c05625605ed3f2335a308d52dd4991158952a66a40185e891. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GBRKQ2174048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5acdfdd60852f635155c935cb2655ec5b80554a596130009b8e9f2e8a6b6d34. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBRKQ2129690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5a4039b66530a3a04b5da359bef1c4861854de5864181f2a17c8f4bb0f4172. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBWUL2172608.
Caroline Calloway: Music From The Internet (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a761fdf3510c8192ee1d94c4c1a8de318f85fac038bbe3308d3fd4420603fa7. 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/QZTRX2298394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2cfc47b0b642a1e66e0198ad25b9ce867386e87ba61234add3817bb0ac6544. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USLZJ2264341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a3641523a1df7b79ec5eb20ecd2f09f635565797245d8b33a0579d125c7cb6. 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/GBWUL2255631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f7bd17cd6d4c41c028247a8595302d197ef92b9da7eeb8511c7fdd2e1b679f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USLZJ2313177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc562706fd6a9b25f33e53a6f470ada915d6656072207a0fa57533aae58b70ded. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZWDD2246993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac92a63e4582a3ad124f1654b0e8fa5ef11281dbf68df3b5a4efc0ad67b93109. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZTV32308619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b11b6de5179e53f7865b7cf0f11ec30af06a88ec8fe2bbac487d753c3b5db3. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZWDE2399071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf9fd882f851b030697da7edbd2ef903b6b4756c4d21de5bdca7e02785dc2d4. 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/QZZEC2318453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3190b063f24029eee4e1060aa7cfcb01159f895b4eba44f2c0f33eeaea072e05. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZ5FN2438688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540daa64c38b2effab666d6617f921a4a1cc8b3f1a8ef57c1b21fc259b03de58. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/QZ5FN2400711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f8ce175a5da65c2dff8557a6ada14436d88ad616f50ecdf3287b3a11b5476f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZTV32418662.
Cold Beds Of Strangers - Live At St Pancras Old Church
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c12234f1378aaa8b195c9fea95243b52f4c26b08786d95e9d6ad2b2035637a7. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZTV32418668.
Ode To Apocalypse - Live At St Pancras Old Church
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e931976ce069811c589a96951720850861a3de038d58e74f8f5e5cb88a0907f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZTV32418669.
Both Sides Now/River - Live At St Pancras Old Church
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b698f5a995aad58796556eaa9525869a65eec14f10a1d74a6e351ffe388d483. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZTV32418670.
Love On The Side - Live At St Pancras Old Church
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd205853d2118052117b64bffba81598c69007815edada4bcf866bb4180ce06f3. 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/QZTV32418672.
Spirits In The City - Live At St Pancras Old Church
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b951a78603d64e38fa121c8b3fb1dd7e772fbd5fab5d4f1d469fbc2336dc7e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZTV32418673.
All Our Friends (Are Falling Out Of Love)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf528a3968af5c2886b1aab2072997a90cf627ac725ac3ba5a213eb009fd31ca9. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QZWV32437064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7447630786a4507b0cf03d15581747598f31395e3b84294cbb16401c75ee44. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZZ8A2406892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf528a3968af5c2886b1aab2072997a90cf627ac725ac3ba5a213eb009fd31ca9. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZWV32437064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422809cb53d94dd973d6fe18a655b23c1cbff0b8dd440de42abe3933f7707fb0. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZWDD2490388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf528a3968af5c2886b1aab2072997a90cf627ac725ac3ba5a213eb009fd31ca9. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/QZWV32437064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee35cb12c839e02c139d14f94d06a65ed6af0fcc0005b2bb6e5fbca478056a7. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZZ8A2544704.