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 0x334e8abdeb624acabfd491024413c35841c3af5138bf6e29dcef019efea6697d. 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/31cb32f6-1229-4ded-8021-0890d5cfedd6.json and https://artists.proofprofile.net/proofs/artist/31cb32f6-1229-4ded-8021-0890d5cfedd6.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 0xfac1b0a7ec8cc1ba11fb565e54b9443c21d215aa4b091bd282c87a3f2f2f318f. 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/JPPO02202435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb5d88ea730edc66932e9c80c30befaed0a8aaf9de0865b4d05d168ecbc79db. 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/TCJPX2326545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca584aee7eba5e41fff09893de9bab1babbaaca2f05de79fec18d5bdf146e82. 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/TCJPX2326608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac1b0a7ec8cc1ba11fb565e54b9443c21d215aa4b091bd282c87a3f2f2f318f. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/JPPO02202435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4206807cad2550efafa019f05f76c882ded76ccc3b9a20d71f4fb296fb8fd48. 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/JPV751901589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bf3418b5724884aa04ddf3d77d666353244aab84c75badd957ba5da81cda9e. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/TCJPS2221062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb5d88ea730edc66932e9c80c30befaed0a8aaf9de0865b4d05d168ecbc79db. 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/TCJPX2326545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c774237e173697ccef584826d5ae64889c160d394a4d9f355cfac25cd6ed22. 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/TCJPY2318452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f06a42d03a9eb771274779ea9754427cfbd526f389d2ceb21ca55b690996ec9. 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/TCJPO2149275.
Merry Go Round feat. BASI, 唾奇, VIGORMAN & WILYWNKA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37400232924aa8904eb4aa3dbe32b0d8347db4ad4d031b2a64db15787c146834. 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/JPTF01909710.
LIFE IS GOOD (feat. VIGORMAN, Hiplin, SNEEEZE & RINNE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df3f8c5b512898ec8546786b70620b42b56530e489bd9777a41972e9e473130. 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/TCJPP2116061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91278aa364228596a11e726503002f503c58e88cba35a3e70f1c78b6f38cfc63. 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/JPTF01909701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37400232924aa8904eb4aa3dbe32b0d8347db4ad4d031b2a64db15787c146834. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/JPTF01909710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcd6f6546fd20ff3bbf0b45c32bee00aa8759342712eac68890cd51f5c1d167. 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/JPPO02403387.
Still Hungry (feat. MILES WORD, JAGGLA, SNEEEZE & VIGORMAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd4a3f28ecd38130f2ef152763242e2af50a7661fe1a5cf305146c292660e22. 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/TCJPY2318395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1dd134bc2271086e3f115bd87d1d21dc0120effa1370cac671ff45f1669a33. 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/JPU902201787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17de3e8224e515d59ed73362fcc38622ab3e1eb0106cb693a08eb17e344ebdd8. 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/JPU902100875.