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 0xe142e606a718b6b5715d16855988ec40247f3ed109124692fd3a52008fd98d44. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93c3436b-72b9-4473-a8ee-4603e3b6d7a2.json and https://artists.proofprofile.net/proofs/artist/93c3436b-72b9-4473-a8ee-4603e3b6d7a2.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 0x6876d8bd5998ca1367fceab0a117ad0c1fa7dcdf144b57974085d62cac301925. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLF712406084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd94f79ab3a5984397da606aa18a6184251a3404077bb65b819ca68caf37bf9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLF712406076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13f5f11d83f96338be1dbac0211413788d57018b1a2835e6a900796cd41ade3. 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/QM6P42441684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ac0be5e3d9212309ff766c9c31d9044a5ad03339c2848c80b5cd62ad55f21c. 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/CAHRE2400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265ac80b94911248992bad2d26afd88069e711a3582fa448dbeaa95aeaede79d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWDD2256281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a05a46db4a7b855d6915f699947a18607515625bd0f0226f94ab34061786a67. 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/GBK6Y2107581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cd34865308f0c0ca08f701f8b91e7ecdf887fa1398d85186627d1a4135f2d0. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/GBSCL2156117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe203c797ce6235399902aa0e91398d63bc0be828f0c07e22b311f84a6f3ab8. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US3GD4196855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f49eded9ca7eeb18c13c2c536c10eb6e445dac96b5e27f9bdedebc8d5233e53. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UKGGZ2000182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4aa16cffbbc01a198b24da02b576a8e0c6b78f70d81254de9456e7f79e699f7. 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/US3GD4114850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63332ccbdf1b863b5cb8420dceb03343089c7f7b06ca78f71fbcd48adaa87ed2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLF712406297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a24b8e0531ae9e2f168316a212a4b0109556054c736056e4806d0570a7b1cd4. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/NLF712406147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf082a4dcf104eccaa76d0ab79d970c145a7017c5e274e3cbf8e8af458bb24a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/NLF712405677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a3ad0b561b568ab261264f1c6db382354a42970d3b37121c61ca65cdc764ff. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLF712406198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf964dcc253853ea9adf1277b4bccc31bb847da117e1d41bacdd33163bbeac2e7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLF712406078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d9a122f4669516a3581530852b5175049e85a99118f5ede3263aa98ad212be. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLF712405673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a75da797fbb5942071a17d46b0a38dd0846921e3a43b007fb2be73b9c50055. 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/NLF712406200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed116f07b39a2fad0748e2bc174422a3bc5abd36ff36d87efb370caaa82b7fc. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/NLF712406150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1421c855b7aee9d054af4fc2f7c7749de0bc7b7976af2f9e8158e6ac691d3a6a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLF712405669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6876d8bd5998ca1367fceab0a117ad0c1fa7dcdf144b57974085d62cac301925. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/NLF712406084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db2a234216159e1961e6a68756d3efb48354f5ae77597638e357592eb8444b1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLF712406074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d865dd8932bc5a9322f7b245e9212f364da8343bd9fdcaa7725c7b53e27d78. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLF712406080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf092eb65d5417a101fcae8c9bbcd4b56aaf572155c0af91916e11c682ea06153. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLF712405671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6d2fce7e5d7f06d1993f0db595095293cec430220886f43de1dc4da7668728. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/NLF712406202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077e8cf3839c76e1b1e4848ca7e3e94c96e8fac5830dedc4e7179872d01de5bc. 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/QMPLY2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596a51f91c803fc45af7b1492a06bf4aba237620abe1af819bc10fcbaf8c452e. 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/QMPLY2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4edcb3f96c1eafc6a697a430c3e5c724e3c2a20e0db5c85838cc778fd68167. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QMPLY2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8299657054c00cfb2ef4614c98a48ebf3be0195c30a885c96caaf1c2160ea177. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMPLY2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4ac54c81b10d75b20f8b99114927b1af949ff66d18b02ce7f5fdd0309c7288. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QMPLY2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6d8c14386095b3f94c01d111814d71395301721dd40f4c21174e40b873c8e6. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QMPLY2300085.
Ibiza Winter Island 2024 (The Tech House Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f887f6f2cabc66ada67003a501f8c9175ed95068f2d854fd53145ee78405fa. 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/UKXN22253524.
Ibiza Summer 2024 (Tech House Rockers from the Heart)
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