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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844461fd1f7435386e9ec6b458a1b79629e7401a238dcda444023ffd3cda3f67. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc5b6a0a-1e88-44a6-9d26-a0d6397bad59.json and https://artists.proofprofile.net/proofs/artist/dc5b6a0a-1e88-44a6-9d26-a0d6397bad59.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9c24f6a3acc9764a262658be2584724ab6aa0142794e2e1e09b64901b07311. 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/GBAYC0500299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2610b12f8ecea9c0d4dceaeddff8ee07f6c1d6a8f9398cd2b1e23dd90d28fd3. 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/GBAYC0500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b78daf434394f28308c3146f4836207d7349686cd97bfe3f3b8513a2802a873. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYC0500304.
Silencium - Music of Inner Peace: 7. The School of Mysteries
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1eb397aaa606df57b5f1c58b1296f4a81245d17dec15cf75033ed3475880e30. 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/GBF079740207.
Silencium - Music of Inner Peace: 10. Vices and Virtues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4891f520bbc61b377857b8432bd642181ff27c90afc12dde084615e7061a5804. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBF079740210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9c24f6a3acc9764a262658be2584724ab6aa0142794e2e1e09b64901b07311. 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/GBAYC0500299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0eb4f07a9ebc211a9ccdfc24572b914cf50ef37cb43d7a9dd1fac9bcfa3bc8d. 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/GBAYC0500300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a392cbf1f2d13aa0fa212088f9931d0ecc3abd760ba6f6d124e53350a0614f. 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/GBAYC0500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4a7c9b201c0670aa070faacd6417015685e783c82c721eaebf292830f9fcde. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC0500302.
Silencium - Music of Inner Peace: 1. Morning Prayer
Children Of New Brighton Primary School, Birkenhead
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f542713698d68ebae53f6a64e3db5b66b3f188a743a25db794bb98797dede1. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBF079740201.
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
Silencium - Music of Inner Peace: 3. Air and Angels
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f7701838b512eb9f3825111b8739147ca1eda2d61c01ced378f6338d813927. 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/GBF079740203.
Silencium - Music of Inner Peace: 5. Lacrimosam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8c18d9bb5112752565e962eb3ba82fab7fe8c5e850438dfae8a07baa1a4b48. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBF079740205.