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 0x17d2c4bd898d8b5fceff71c8d153828b0612706c43994ade45b726d0a3d1a7e6. 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/2811991d-bb51-43e5-b094-1975120ca776.json and https://artists.proofprofile.net/proofs/artist/2811991d-bb51-43e5-b094-1975120ca776.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 0x383ed63223ec3d406eb81386799ecbead5def9d2f7c43691a9fcb2b2521c9975. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/QZS642300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ac348ffdb44e0c37a5da917292f764b24956050aba749d0fc6768df01cee84. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZJG52311600.
get gone & out my body (sped up & slowed reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c9463e7a6d50681ad714ac11eeb00eb26c25759f6668c215910e5e3826eb75. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZMHK2324451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe20c7679be6ff5d4b7df5472d00254daee09fd69ad76837d1202d184657356d. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZK6P2447215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9329cfde21082667c921be61988261f3d6acf4e5197d6115bfc34af20aaf24. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTAU2418036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe20c7679be6ff5d4b7df5472d00254daee09fd69ad76837d1202d184657356d. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZK6P2447215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be7797c3d2217f27653be358a7e243c1994d5a5d412c92f2afeeb9ac36354bc. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/TCAJC2417254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42da53e54e80c7735b9fd386a97e41db39762fbc173855e7e0ee529d280c97a1. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/QZZEB2415809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e617e0cedff7080f8585caf6bfc222403a1dff8059c2be3e403d02146d96b62. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCAJD2414760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf710b3153130a1a869396c1cf20da274b6401996d88bf8e7fa3c0f0de3b13dd5. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/TCAJD2417479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67f8d70eb4bef5104f8fc70b81b47f57e3c54c6a4aa08ea731bf7ff329f6dca. 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/QZMZ92562331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e30b57cf87da7d42c886980981cd7026babd977a688b9c1179e0dd3cfba08b. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZNJV2577054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e617e0cedff7080f8585caf6bfc222403a1dff8059c2be3e403d02146d96b62. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TCAJD2414760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61871136a35ae597df8f30ae6875c6bacb770a710c6abff34b77f1cb227fbdc4. 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/QZNJW2541327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5246fae9f63ebe04e0c9aec0c5be90ca2c57063ec562ba47783c75baef39a5f8. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZNJW2541328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48b6844bcd4b2e7d7f20fb9b0af7865a127853933d484034617f426ac050b11. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWDW2570245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39461eb97ef8a25488067881a6f395b554399827473faa823edad20b1cf9466. 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/UK6822510274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91083cc687b86c5fd4208d8d3ac4e6db7aa65726b194fcd8a003bfd706202975. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/UK6822511583.