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 0x6431ce3282383f0c727760ca8c9b14077411ff322c4038b8489108692c2974de. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcca7dd1-a5dd-4a70-ad7b-e46646d9d2d3.json and https://artists.proofprofile.net/proofs/artist/bcca7dd1-a5dd-4a70-ad7b-e46646d9d2d3.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 0x61eb27a1fd1cbdb5908dfbfeb1d2410bba9e815aee1399a65c9481f610261ff0. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCACU1620444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb996f5b9a384be5200a7be625e9b01d8f130677df02f3a929e6b1f5cc93ba01d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBKPL1789541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031052e9176605aa621778f591db014e1cf3f1e804a0613bb7f4e46bfb461530. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBKPL1789542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d41635d9753166c1db3b4f44a052a4e7bace7feb8f214b4b5ad624c97615252. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBKPL1789536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18e2c0aea7ecb91f23ed3aa0d7c304f260dbc33f929c380de8452aaeec7a0c1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBKPL1789537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1edbabf721ad4e1e270d0cd4d11f5b5d37a8a3ceee8e327a97a21ad14465a8f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCADN1883369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7232142504b8fc9f1ac1c46d567967d7f7c60b840ffd6f8c0f36d977c7e62b14. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKXBA2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8996e4986219bedde7ac371d9e127f11d4feabd4bc6906032873a48ee55dca70. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/UKXBA2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe221ee919363f7d99db2fb3d89f5c7b9462755ae58aa817769a7f37539dbbc05. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBWMY2051020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a8413080c2ddcb1bc2f1f125ac8b2b8d27b87c6aa1bf0d2b3905428cecaeec. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:38:24Z), 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/UKXBA2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e01ff4185db36b4342d59b65fb042fcf83aeeb5142cc78612fdae3656e5db20. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SE5ZV2226601.
Ravel: Pavane De La Belle Au Bois Dormant (Arr. for Solo Piano by Simeon Walker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d756f28dda867f5c1b88104a0bdf92d09b5925a1864909be1225b934116b5af. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/UKN2C2403801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f6634763956ede4ed0624908efb54e51bc0dea8452fff87dfb6a0dad5c50f5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:49Z), 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/UKXBA2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6cd3c7f9070895a10a6a5356c27ab8f72aef1ffb1150ee40b95536d4e5581c. 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/GB45A2002335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361dd510982111af1d0f351d265357488f3d3c3924d9251e31e3201a0335e73c. 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/CAN112301096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b21d1f3010fca030df163ac69721293580e54f1faa6ccc706fc9ef3733ba55c. 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/BEDV42000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3399cc0fada3cf79b569ba5898429006e9a1a709338d5caa4524b26abcee898c. 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/GBWMY2050180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a1c7f3c64b40d98a30c67f2d4f2a4c8fc5b76fa2e25cdbb9c09cfd8c1599f2. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/DEEK22200012.
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