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 0x56209bee7009c6d03c62adfc77d63739876a1a7fb14cf75559ee94016726d8e9. 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/70d81bc1-5dc9-4563-9e3e-9bab23c7f721.json and https://artists.proofprofile.net/proofs/artist/70d81bc1-5dc9-4563-9e3e-9bab23c7f721.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Summer Of Love 2025 (Mixed by Robilardo)
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 0x8e787ff98ab5ffe6e639a420f0dbe5a6dd86cb286b644f627cc980c77581c1a4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NLD682501751.
Dark Flower (Joris Voorn Magnolia Mix) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d411e9f5e8fd507e42065d457c3920717983dd6e2ec2a0116fd1ae69758d64. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/NLD682501760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed83d4e3f14dfeeb3a8b114d269dcb323c9617c6a4aff802b3c3cf9a6c742bf. 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/NLD682501768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e8353d8660f386675128f5bfbda9e34934c0006a94bcaa0d6ec9ad7a41cdf5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/NLD682501770.
Progressive Essentials Vol. 3 (Mixed by Robilardo)
Cold War (Lake Avalon & Makara Remix) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817c8c5b8b6c5ae268a44f50fa453103730f4b022bc5704aa0d5eb11e89bb86f. 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/NLD682502409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f39e1e06c966cedf5267fc4672d07ed957a83c2570d136b8471baacc2c44ec0. 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/NLD682502410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c522e0f0c6cef7212bbfb6332737698db60d74979d27bdfd2cbbdd3ef714fef. 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/NLD682502411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a57a765d1169e47ed0acc8a40be07c4e66992ec256770e7e31f48d6e037dc8. 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/NLD682502412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2682e5167f58399758fd41284c401e9ab0fb20676dc346694c46ae2c07f21639. 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/NLD682502413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22abb1023071fb407cc97ce71349a1e697f1daec6ca4eccd952fb9c62ec6b50. 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/NLD682502414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80579e9d6dc2dccddaff77d9c9865ee297238ef06941076959c22b10c3033f6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NLD682502415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff52d503df61e6717f333e1dd91b8f1ea74d7fe171dc1028eb5e2ff6196e6f5. 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/NLD682502416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0748abe771b1fa1378b6bcf37752446f625231b8d01929111c81793679772fbd. 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/NLD682502417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe94fba6f843f28a56825a4efbff66cba078c96ade68b3a0c753c6a3d560750c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/NLD682502419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd67679a7f3836208dddb5e4e507730475936eb061178c203564a38983ff5d4. 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/NLD682401450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad07a1039d3af9ba302ae49eac96b53c408704da7f7a2331f8ae67e592bbc44d. 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/NLD682401451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0477d8a0bfa3a69d06a4e0ab58b7d164997cc1581847316047b8dcb92cf6376. 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/NLD682401452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1846fc470ce0fbc29cfd1701361fb3811f2d3c037d4ecd8b940afc5ae9d79c0b. 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/NLD682401453.