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 0x21a1e7bd7de4e290e5f0d510a179191d32d2dae2f0c618f9c1e38c13610b25cc. 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/15194b87-e464-4212-903c-008a6541fe63.json and https://artists.proofprofile.net/proofs/artist/15194b87-e464-4212-903c-008a6541fe63.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 0x604db373670d583079c11e971fbcd4091fbf7b6b8c3c66f6a3cb2c6c11076965. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/UKN6K2002357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022c698d161f7d35e6c36578ca7b4e0c4c4bfd390d5a0a0fb5ca30b5c106fc36. 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/GBKQU2228646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8619850532e3e7d5419f9c786fa6822c3e9a79a1911a6698f766bb8024b6b07a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKN6K2200275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283372614442b5cea4366e4d013e70a486681fa9161169ebb82e1d8e5afc0faf. 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/UKN6K2200277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb41cdb271c71353b775cecdd39161630c98b9d1e63df333bc676f32c1cabc72. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UKN6K2200272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923f43e1395b2fd5b66048f83f66c30c85cc6157aa9b64d68b6820c0f9096fec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UKN6K2201777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4057275b79ffab472a024cab82ceb6a899f43980a1b7b4db581ce347037cf774. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:03:55Z), 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/UKN6K2202543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec3005beea93b54583d7328d0e611c7f1541a7b046d86826ed242ded80361b1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKN6K2202542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc42eef05ac673ae756c2aa5e3bd809c73a2965e24f55ca40c7be53e1b2701b. 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/UKN6K2200271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe043793ed278c2fd09237f84aea3604a0bf20cdd8930664701ad68dd455a1adb. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/UKN6K2200274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107c099b325d362f88640ad1807c6c3e0d5966703650ec9864c330bc8b1e63af. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRX872393233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb434d5f6546fc34afefcf9187358876af503489a0af2732a0be5ca7e7a7ea2ef. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:40Z), 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/GBKQU2366608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fccbb24cb056ba29ac7bb6a1758bfd59a40fafca360e0379fa1f0f16f45a92. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBKQU2366609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b655c965a0ce7066bd465316b4b038e068e87fa57e3c71bbd0425c38dba235. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBKQU2366610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13220ea3416276a4e813a30a636abe0732d57b57ea66621bd2e1dd9556f55af2. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:53:20Z), 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/UKN6K2300742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493887cc90cfae577c74ba351d79912eccb53229fcef0cdd1cd938524e5db79c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKN6K2300741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13220ea3416276a4e813a30a636abe0732d57b57ea66621bd2e1dd9556f55af2. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:37:52Z), 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/UKN6K2300742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5524083400e2c75370080a3735652226ae2fb6afbf9805314c1a7bb54ac334b6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKN6K2300744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70c365f0a8303645920144f675dc91db1ecffc273d8a7dffa57b1133c2d9d6a. 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/UKW3Z2403648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3e50fd79a18a9d76a51720e09fb0b11fd4fa12a8806a4f507b9c9bfea22a49. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKW3Z2403652.
16 Again - Soul Mass Transit System Remix
16 Again (Soul Mass Transit System Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d83ebc0f927d39262119166a3f65340b9fa0392efa0c5171dddd24225661ccb. 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/GBCEN2300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d9579355d443e9f51118c2689e17647c2c1f202c29af4bf246d65ba903d5af. 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/UKN6K2200716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffba4e3499bc9168e694429118bc2d26186ae4ec8ca21be208b3cce9fc5ba4b1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/US39N2300970.
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 0x380d837d208d0eed440e012bffab61b5c0ce95e664990e83b486446638d0f87a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UKN6K2200702.
Roof It - Soul Mass Transit System Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825a38f4e093411dae8489ebf3dd550faeabec667d765fff325ccad98ad5356c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UKN6K2200719.