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 0xeaf4c47be559f41bae0eba76c7130ff9453539ca476a14f600775005a7adf7e9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b89151e-ca78-4447-a5d8-89a48fd615f7.json and https://artists.proofprofile.net/proofs/artist/6b89151e-ca78-4447-a5d8-89a48fd615f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gentle Reflections: Instrumental Piano Melodies
Autumn Melodies: Relaxing Piano Collection
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 0x69e52fcab78322606ebfe304f0dc5cea9843eb91b2733cb3ed050132df062461. 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/DEAR42562869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8838ea3ef8f493a99566dbcba6d8e9f05bea87d8510d6fafef667ae8612ef9. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/DEAR42562920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faa1d19907ac1b293a26dd5a9b6a4da86dd58f19f110748cc5d4946f54f3d92. 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/DEAR42562945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d405ba62ae488082c444d6bb971c74803848057efc38308cd91c652aa956246. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEAR42562530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42a2ada1bc9b3823f661d6337744dcada4d5b89d3bfd4be5d5071ced201e857. 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/DEAR42562803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7620f88d3638c01d31f231e8cdb5a8aee55266aad3151b6c727cab697336fa1f. 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/DEAR42562726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c3dfd5334bb0fc9612130a89b96dbb796a4bb51b676b3cb741c928e4bbb9bf. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/DEAR42562678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dd38dd1463ac01f72b85a6164f14facf049969060c67bcefe346d4f122ee84. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DEAR42562604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf569a3c6661df437e047abc0dea79c15045ee63d873ce98353fe548a0068c3fb. 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/DEAR42583101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2aeae3ea6b332caba9b12439277f985b3f1c19bab76059349b447ffb0ba6ea5. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEAR42586652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e0d6c053d1d01221fd0363f99f4610a018ab78255f592e0263133c0033397f. 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/DEAR42586265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3c97a4e065a770e56210a0bc2550e07a1df12d8dac17097fb7e42681c04285. 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/DEAR42586347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3acd4226f1301e05f2e74005b4e125c764b21d484a6af693a8f1902257d1183. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEAR42586273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e764ab97dba7013fbc7e12898071a04ac7433870c539b3affd8c7ae279839f. 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/DEAR42586624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aaa33b114f3014b7543ea246cab66cfc6c1fb6a86105f12f51ec92a60ba8f1. 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/DEAR42586357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978ccfada58ba3958a461546295e8f99c2d2fca7a7a3e81cf74c50672b81288c. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DEAR42586769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7269e3f6b7522f68ec58dc047b75a75e5774bb207c48a15be3c724ab167d6c64. 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/DEAR42586469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe780ec642d4ea2df6e0c81bc204cd56dc4b6ee5d503730f23ca62a1f0642801. 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/DEAR42586294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a9a76562dff4c959fb724b509f8233de06664591177439aa8c1a9bdb3a51ec. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEAR42586551.