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 0x16e7d3b6e9989c3f9d5f55ae8c318d2150c9dd6b8bd44fd9948452afd5e96198. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0a8c517-e4ed-4112-aec9-275cf8799701.json and https://artists.proofprofile.net/proofs/artist/b0a8c517-e4ed-4112-aec9-275cf8799701.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 0x520611b78a2da48f300fde0e2fe5e87c70c4b87b23c10ab336a6a98a9747c744. 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/USGCV1283455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952ac1fa78c8abd015cdb61cb705884c2dda13ac078b07f08491bd2f4927dcbf. 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/USGCV1283456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0677595b33f810af743890088de831cab79555c1ee40f028712283f2e30139. 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/USGCV1162252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dce9734958108e474671bbcbca3d82fa48c85c7b5495543c858b95e678cb5c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USGCV1162249.
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 0x74c3063cd4bd2805371330ccc6644afc564e4907ad4711c938f7f0584836edee. 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/USGCV0969446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229ff46efce0c474ac12093f26dbe3cb35601036065e58477e2e1e1bbcb12b23. 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/USGCV0969447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ef2164fb8e285ae6b43612b65faf520c5a19908bbd8effa666243c53d6f8d3. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USGCV0969442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c11d926c76b549a403982595734a4c23cfb358b518831e04cc00a46179b029d. 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/USGCV0969444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c8cd61a7335f888a1be74f284a38528c27ed6689fd66c9e8dda38b91284ffe. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USGCV0969449.
All the Stars in the Sky Are Mine (Cinematic Joy Mix)
Look & See: a Portrait of Wendell Berry (Original Motion Picture Score)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb6afc7c326f7652450794d2beebf56c58c22382ed22ca382e1e2a99c4013f1. 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/USLS51707501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43b8e1d734824ff2b33911819cbfc59164a4e8f9229fb66d47e02d1fd1c7845. 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/USLS51707502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774aba2dec0423cdbe41672dfc5ca1faea55746c5e0db2e53a49261715728d14. 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/USLS51707505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223a2fe43e5e02ed66a3be8396e5f5b4dcc644d7beb3236d3cd2f35e6aa8e586. 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/USLS51707507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e22604aad815a12aedcd6bf567fb232fcdbcf04c10f771dc66ae6e3c999f5d3. 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/USLS51707511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f01a1fc2b30a8ef98ec727b357e1dcff12bc577779817e32d48f4abb5dd98e. 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/USLS51707512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1e344bbb0b426c6c297e210ada9317463dd1c8ccb74cacfb62325a45d0d7cc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USLS51707513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad0f8e6036e7484904a95da2e1269da1bd76a2d5f6b3d5db95adc47612ed8cb. 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/USLS51707517.
When I Am Old and Gray (Cinematic Joy Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f1a0b0f2c413b6696f0e164cb017bd67835e682e0fb71158e4d7d98739e017. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USLS51707518.
Studio One Forever - Original Motion Picture Score
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f84a0a4e6da0f062d41e476b5a9aa75317d308dcd3a2ccd26b7510a419958e. 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/DGA092402276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cf8bfd08e69a43fa1eba6c0df3be568023814eef25cb11a6884bf5b255602c. 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/DGA092402277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c3e045acb96cde7f60cb8447c78d782fff326bbcfc0760531b9beb2faa2e7b. 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/DGA092402279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0176b002c062e30289813364cbbddb16f96e0d58dae9d22fabe2cc0d0658095a. 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/DGA092402286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda27c5ab4095f99ab339a6bc99689a05f07224b5b38e02382bcc54ee3335c1f5. 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/DGA092402291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59200bd6ecbc259b5654f0e15d65d961750f206448eda7205487963f1a3f3d41. 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/DGA092402297.