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 0xb25168fad56e2d476397778e999ca1fff816865464bb889da03c2ad9ee65e175. 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/92b36299-1be6-4109-8e51-743faf70fd72.json and https://artists.proofprofile.net/proofs/artist/92b36299-1be6-4109-8e51-743faf70fd72.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 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 0xcfa712a39b42e14b56f467943a04b024ee872d615e9983708b7f9ac7c1a08976. 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/USA2P2115159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540aad0750ec17d6321161ed772327ea7a1e77e3813a6909a5a4d5d4371346bd. 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/QZMEN2383400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726a3a66bcfd484650f87ec1bba9eb943061994d11ad1f2df749fbd845455bce. 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/QZFZ52108529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41a8748579f0a6dd1fa0b948cdde1258d06334e0c29dcba1a6cdaea988b9261. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ52108531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d854c77cce5c71a8d679f6ee8b46ba9619eab8009e8635d204851a380f8dad. 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/USQY51610268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa017a1c4b8db5e8f63fa014c8f5226631308897b63b46c9bf1423767d4f36bcd. 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/QM9A91601806.
Other Side of the World - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe816ed2fc57cd7c3fd7f2a24f7d6f3deb170cfbc405de85f23f96c74455f1e6d. 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/USQY51728626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7977fae1daa1ec1ada12a5903ac58e31a1122583977e2cb16ac541d6864a6d7d. 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/USQY51412834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25966668201e12f0071d7290bf15a5eff0b3068e5dfdb9f02d0debf340e39b79. 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/USA2P1346439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6dac4c6e77f4bb52099f7e0a9398dbf8ab7327e94fd9497de4e2b82bf1d40c. 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/USQY51412837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032651ac6f486ce4a952920a9a0158d7a7df1d74bff6be912ba1f2f5d8c4ff15. 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/USQY51412840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd9915804c40ce3f9c4061def0ca07313e0ce13d15bfd5ad51f785efadf2d3d. 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/USA2P1321474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46f47df4eae5c665614aa681b024a9729189aab42c3f061a77408ac141ba704. 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/USQY51412843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94da181d8e0ae29ce18a947e1c2554e9de68a714bf79cec34b737839251b91fd. 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/UKGCZ2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d137d3d143298300f25a55fae2b028f8d621c33e7b5e478b78695e40d4de12. 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/QZK6K2449699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64623330bd71d280adbfa06d01367dd6dd508c50dbca1b60a47319a96492f732. 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/QZK6K2449700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc879c26b6b110f41f23c08df9001ced9de07d423ecd90131b36aa1cd638776b9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKGCZ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04359adf8fc813c04518b6d2b0c83e09fdb59d51e7f5a04b8aa54c618599e1ca. 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/USA2P2350441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d668d97237222ad3f3ddcbd2991a798534861faa233f06bdc908aedb62641fe. 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/USA2P2244428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07f6bb619d93f8ef30c037fa0570b7dad6b827f9ce5a92ed99686e71fad1566. 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/USA2P2222861.
February Song - Live with The Pitch Meeting Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2f447b357f9978ee827fe8b4d383716bc0822eba72cd9953afb6b525a860d5. 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/USA2P2216799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193b8051b2c7728576f0ef02410499d3e97fc6d08fb093fc3ae5f42db0449bc0. 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/USA2P2201287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61916f6c38b6972775c3276de5636638d7825332d3432367e65ec3426648ba49. 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/QZNWR2173707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae0316e074834e7cda8a4c8170b4f8b6a2260f5ac177ec385f959bbbc529d59. 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/USA2P2103507.
Say You'll Stay (Jennifer Chung Version)
Perfectly Distracted (Gabe Bondoc Version)
Giving It All Away (Glenn Lumanta x Drea Rose Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3d88c32ee19ead58081773ff4ba4a992095654b480d52e71d16af3a0427f51. 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/QZMEP2062399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2544bbeb4b18499f69622dfabede75bfd5ac40b6f771d55832cda5835fee461b. 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/QZMEN2040319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802d6dac6688791ad897c95dcf0b6c46b808c3ee82e3c18ecc3db31a44fc29b3. 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/QZMEN2040320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2111734983affe733a96226486ef5fe17f288103ad8938a11aee6fcdb7a78c54. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNB1949295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ae6f3c6f3e9ca38024ec6e30504c5d584ad7c938e12e5f6a8a3dc1fdb7b87c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNB1949296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00057cca17a28382ce65a516b2febf1594221517b69ccc68e5a9b1352fe9edb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNB1949297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be425ce779d9f9cb00bf691d93baaa5b845914fea1c36b5b1f988ace7287b4a. 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/QZFZ21918039.
Try (Live at Speakeasy Sound Studios, 2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be425ce779d9f9cb00bf691d93baaa5b845914fea1c36b5b1f988ace7287b4a. 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/QZFZ21918039.
Honest (Live at Traktivist Radio Studio, 2018)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a81f9d32dbe98592006226617ef6f1120f68c672042b93afe2cf8c39a0a73e. 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/TCAHB2348389.