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 0xcc4882d9395d893f8633fcba5a006e239fca379ac3bca405cb692fd5ae5f76db. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf72ebdc-1f38-4cb1-b45e-25ae8d881000.json and https://artists.proofprofile.net/proofs/artist/bf72ebdc-1f38-4cb1-b45e-25ae8d881000.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 0xb053841cc58f874aa858240d517377a6e030975806bf228b2e84da015515acdd. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/NLHR22400699.
Uplifting Trance 2025 Vol. 1 (Mixed by Roan Gosling)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd455a0aff985231e3ec3c27e83cd295bcfdfc7632a84c4dc61ea4cc0a8767c46. 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/NLHR22500256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cafb4cee7997d10e7834eb43d2fbc30fb178d8a9afc7dfcbac76a1558bfe97. 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/NLHR22500257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5ed3433f7f341ab7fa6c1b7fe0f240fd98de3d8a6cc9a19f87badbcb28d435. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLHR22500258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c74dad923aeb789d44f42e41bde6d86b9fac5c743ed94f64fd68443d9de04d2. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/NLHR22500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3099bcc4b60aa02c806186cb30142346ed31046d48bb6f7d9d3ee15b717b694. 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/NLHR22500260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb764e58df81c99579515e2169be08c0bb8e1c1295f3daa3a46d5e04f943a05a9. 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/NLHR22500261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fd0d574029759ab1a0434382f64dd52c4c3424a76547511ecceea3eee41ac8. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/NLHR22500262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91381539c879698e1d68aeb25b2c76b90f6b6f504341a9af0b984b924c3d48d9. 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/NLHR22500263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf4e7eef97db637993bfcc083b7081160d886eeb6e77547e6058f5f22a4211b. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLHR22500264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3d97df5f86f8efa34d27edb41b52b570030c4b272fa7a5dcb8caf4153f1ed1. 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/GX5MX2406939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326a9433d7a9682ba87bf2fd865fbbe4c2426b56749efa636a7dfec2047830bf. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GX5MX2469641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3e4910893a735282c858effb83facecd5cbf9d6455443a0c4fcb2eb7bb79d5. 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/GX5MX2403984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfcdd7472c53abde90ea4092607b95a34b5bef27774e574e8f28fa3ff8c8e40. 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/GX5MX2433988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc5c472f8d51903669acc4638b990fe68bc2bd1a73b5251b5650e624222cbd7. 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/DEPI82435100.
Hilarity Leap Records Vol.2 Cosmic Blooming (跃动记录二周年专辑"芬窣嘒彼")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7188aac8292b36b6172eb26683c2af2594e0e1abcf09fb8e000fae82aac4bb1f. 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/DGA0H2412779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdde226706020b8472096063d2c30fffa5d977344d8bc2b6a1ae6be42eea331. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DGA0H2412782.