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 0xe47bae382cc8e8c83ba47a296a7782f1571c04743f77ba60aec32cfc4447f2e1. 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/876e30b4-f93a-4dd8-918d-f4eab1a20a59.json and https://artists.proofprofile.net/proofs/artist/876e30b4-f93a-4dd8-918d-f4eab1a20a59.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 0xd84487d8846a88ed1d41dcc1b7df08328a1535031e2e79519ccb7307a5b17d77. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEEC32000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d2c8007eeb680ad588529a1d74106ed2a9f42521018c9c6f6c1351ae092009. 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/NLF712011498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41266d49bec3088b82bf0ad1729caba4f85e4e412f3e6080922b3acdc13d8b3a. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/NLF712102210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cef2fdf4f64d84a213409f73ce67fb170464bd298ff56eaabd6c185d2059e7f. 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/NLF712102775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41266d49bec3088b82bf0ad1729caba4f85e4e412f3e6080922b3acdc13d8b3a. 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/NLF712102210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf766da3b42476527c9d78139e33a14a5e1969c5f10e05bdcade7362f2fc9aac. 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/NLF712201555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064b7e203b6206d2fbdb8b49034532f08be430eb7b7982c7d58b058b7a6e9ad8. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLF712305899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8da5c6a3d5624131c783fb564d1d592a2736e04816028c17d6b997d10a8fe3. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/NLF712407684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8da5c6a3d5624131c783fb564d1d592a2736e04816028c17d6b997d10a8fe3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/NLF712407684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07b26b900864c4a6be98cda7749f6a4f3a4ed3c4770feda06875655a9ef92d9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NLF712407685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81127725bca47c31e8fad165c843d8be6725695d1a1df83b059928c1f0e553d1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/NLF712503594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d0350b2273aa655fc1716c66c2559c099c65d6d8635f1c31e1fe5a5efe156d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLF712504276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb969d329abb4b2c89d923af6da2ff6b468004072f01a464cd0ee4458636689ba. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLF712011497.
Bloomingdale 2021 - mixed by The Palindromes & Dave Winnel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8554aa4b84586b1acd3eea012c51536394ebea15fe47eeb21da827718a468de6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLD682102442.
Armada Music presents Summer Hits 2021 (Mini Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46db84fecd8c7c45d6df2a2290b37be45a6f4dbea7e5dfd9793ff341dac91c9b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLF712106956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb969d329abb4b2c89d923af6da2ff6b468004072f01a464cd0ee4458636689ba. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLF712011497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad234a219f26d6a671fc5c3717c30a5f28e45da08b62abba80d5dfef657de24. 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/USUG12302964.
Chill Executive Officer (CEO), Vol. 3 [Selected by Maykel Piron]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb969d329abb4b2c89d923af6da2ff6b468004072f01a464cd0ee4458636689ba. 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/NLF712011497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0d2201ea1f651f9d467640c3bf0314ee013ad419e3114cf98b31e54335dc99. 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/NLF712013244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952b9226d5604aff04670ff36f240a75c0553ee5f8dd000e5a689866706f0091. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEN062100643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f72c7451c348331f97519fa75e41ce8ce43f465817f3913a24253944d2bddec. 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/DEEC32000054.