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 0x8f30ef423b05be982aaf79fa8f44fccf1634d543600a1137dccb30ff1c6f6d3b. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a98113de-d6c1-41dd-a069-a9a595cdbbc8.json and https://artists.proofprofile.net/proofs/artist/a98113de-d6c1-41dd-a069-a9a595cdbbc8.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 0x3bb0d41bc5968274ee52fa506ff8bfd55089285b537cf15c10dc12874e6a91cb. 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/DEWG81900181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde61c197164e40ecda2e00e973a6db2729ea3b79b0f02b19e4aa863a698a3528. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEWG81900184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21de9a9632aad5287525887ba634fabddb56c1ef2565360ca54d55091db34191. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEWG81900182.
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 0xb1ace0ca1b46aed29a387659f6cede84eeb9d23bb26c136af972027e1db4eb2c. 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/DESE51600486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb27ca5ca3a0efc0acc6d18576c9b7e5e7e6faaef3a61d5a0912a4af6f0f6ffd. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DESE51600483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe7f0db13f607e5ed8545d982337790aac638e74f6be428ea7f78b0ba2057a6. 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/DESE51600487.
Spirit in Black, Chapter Six (The Ultimate Metal Selection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd41030f8bf1ea1b0856e0168f4d6f3f6e4f11449e07d605c69362c62eb7fe8. 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/FR6V80520036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed904adeb25183cc8cf58714bd299c391c41b5493980b56d8451f8a357c52da. 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/DEWG82300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3f734cc7a7cbf9dcc204de5faf9aa2aa2ae44c782dcaba20d2819d22350241. 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/DEWG82300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce2cfd9ac5c53e386b861ede2a6ad89bc78a5591d71e788f6dad4bfbde3450e. 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/DEWG82300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104c771cfc24b36f43c4883b61679fdf5c9dd5ba572079175930540807bfc01e. 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/DEWG82300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb503955e92f862039c51b9c4cd609e056e54338eecb711d67174e1b8a373856d. 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/DEWG82200161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec16a01b50c3181e4d2fa76b7c0e035e5691e64d616f7ee3add1b79de0164c3a. 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/DESE51600506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a9234128409055cbc32221a255cff1c36f77f6c9138c54ae743b277be0aa31. 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/DEWG82000220.
The Devil Is a DJ - Gothic Music Orgy Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd109a8b743597a79a6eb6025fc89f986032791b86969310a8b653cf34baec654. 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/DEWG82000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81484a465c0cf9c6d8307898291d2b054cd16878607d14b4369d12df7f35124f. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/DESE51600424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e80f0c3abb7c5caee7143958c89220ccf410520ea29848f3d4b11b86f9a240. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEWG81700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c6013163dfffbb9112c099b8b7c8e3898dd448429442fb7a3c96112758232d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEWG81700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2e72e22cb67723c10c09fe0a130cbf0fb3fcc6ec3487276997a9455308852f. 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/DEWG82100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0a669309fd1350129ab5250e877c70954fb21cb130735d897988116bbea89e. 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/DEWG81900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba33b271e987aa253d684836ebad0137c8252a01c515298c7a6c19f951abc70. 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/DESE51500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4955f3beea9b44b35b575f3574d20f89a9c1006f6aebd30dbec3041f7cdec325. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEWG82100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b9c755556ed74ed455887323b28d30298629895ba2a47b082b1cef45050638. 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/DEWG82100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a5f87c2c8e3678302cb32786773b67f2ac521d2227d899775bab15ec384fbf. 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/DEWG82100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fc2fdcb962ab3037fada8623cc8a5be0645f10ffe24f2bd17cdefd9fd3b66c. 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/DEWG82100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8591de22b303f681644d873cc1761be24ee3efa0a366736ac1386e8b34fa6d95. 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/DEWG82100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b807ce2bba2742da96e0e3be0d3aa7cd9fea81a289559dd24025d94051e86c9. 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/PT3GH1600002.