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 0x453f21e59934b123424f1a2e8e8ded528f6ccff1dd7641a4df05cbe6a3d23bde. 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/aea16823-e135-4fe8-8bb9-b01aecc81ae3.json and https://artists.proofprofile.net/proofs/artist/aea16823-e135-4fe8-8bb9-b01aecc81ae3.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 0x94dc8ea3500808e8770ce8f100721dcd1b96cd66f264175ecd76b354d318f8b2. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMXQJ1304702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4189563ba89667472bc5a782164eab0a079575ac39bdecf106c56e8995ea245c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QMXQJ1304703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09516460cfab59fd44794c64c1c8e590982cad779c270609f45ff50b2ed1a38. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMXQJ1304704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0a7d559e3070bd3e86da242ee02111a3e4acee5b2008b3cae2c8871a55f791. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:09:45Z), 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/QMXQJ1304705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51598e0385a4f63e86458470e8a2e415aab9ec210035d5a1d820d3614ff165f. 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/QMXQJ1304706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c03767829ab2060e082567a3943e7e162c936a513bc15ac35a1f921f77d363. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMXQJ1304709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b0bf9496c84bbdb7fd98384adc3537fc3614e155ca807345f2867496c60f8d. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:35:23Z), 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/QMXQJ1304710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671d3540e92f1497ce824ff0bb5397af10e1209b437f9328817a6a58b62a8061. 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/NLB601200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e9f73ab8df23de4555c76853960454938842efd8271a95715061e990c85530. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US3R41529702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdd8c827f3994ea1ffc70dfb1432464b772a593656c3b7f570a069f7bd8b6a3. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/US3R41529802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0506d9e8f7cb13f982c1c3b56205e6ffe55f901b579f7db4b3b1b3eb100f06. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/US3R41529804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b9c60d28b19f2c68d56a784e2b99ac4c08fa682a4b7c39216114a834da8fb1. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/US3R41529801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515b548a5f8a057b41852a3fbf4beadf158114782b73ca56acb58ec5b3178990. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3R41529803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b7250073e222131bc462ededc6b9606c0e0a1166f022a4c12ddfdcf7f91051. 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/US3R41529806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5cdaa414b5c14b4eb592bd62fbce2a2da5e84e7af23a568e1759fc900ee0da. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/US3R41529808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515b548a5f8a057b41852a3fbf4beadf158114782b73ca56acb58ec5b3178990. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US3R41529803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6887b0b4d1638cda47a3261d69ddadc3eae37b7b315142422ea0f4679824821e. 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/US3R41529805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b7250073e222131bc462ededc6b9606c0e0a1166f022a4c12ddfdcf7f91051. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/US3R41529806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36a0790e0af10e615aa283451fe0f3ee9d7c4981807102e8e0b43c626f40f91. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:59:33Z), 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/US3R41529807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5cdaa414b5c14b4eb592bd62fbce2a2da5e84e7af23a568e1759fc900ee0da. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:23Z), 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/US3R41529808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdd8c827f3994ea1ffc70dfb1432464b772a593656c3b7f570a069f7bd8b6a3. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/US3R41529802.
Find Yourself (Richard Norris Mix) - Single
Polyvinyl 4-Track Singles Series, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8992e60663fee9a62b2282b0ceca2391f80a8c38252730d15b117ab06e047c. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/GBJXP1730404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c174347fd3a264704ebb7740f4cd8005091e8e75454ef28f6d9fff5e71f3cd. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBJXP1730406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8992e60663fee9a62b2282b0ceca2391f80a8c38252730d15b117ab06e047c. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBJXP1730404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f38b59ffa8f1ecf8ebecb26d4ef43f9a7d407a9c3dfb521676fa970e87b0dc. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GBJXP1730405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c174347fd3a264704ebb7740f4cd8005091e8e75454ef28f6d9fff5e71f3cd. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/GBJXP1730406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c66bd6abe827d7035fb5a7f85ad300e3299684403f2193c9b3eb02c56748ca. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:54:46Z), 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/GBJXP1730402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51a38b779146b3b103bc59f373ad4725495d0fc196d00e9a05e317d381e04f4. 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/GBJXP1934401.