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 0xc298231407181d4792b8b67cea94adb80b1311d9f9dc9c1a70fd8bba11558e06. 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/ba31dfa5-3c61-4a39-91b0-92be972b3b4a.json and https://artists.proofprofile.net/proofs/artist/ba31dfa5-3c61-4a39-91b0-92be972b3b4a.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 0x35adcadb22a092f9fa30490505875aa6d45da56acd5247a7488ed7b6539a5267. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPM591001277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35adcadb22a092f9fa30490505875aa6d45da56acd5247a7488ed7b6539a5267. 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/JPM591001277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea94e3afdba7ae63e27c3af84e80cde1806c967626fc57682e9f3482a8e413e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPM591001286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b65e4ba4322a4e154fb530cbde2adaaeb06e0ddf63a676e8dce5236ca61fe7. 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/JPM591001289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe791737715c32fda4541adc4b41f0d8ed25d382b36f57f6ac33088b1e0d3ff39. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPM591001346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0559f712a8d638b3edaec55e63120c7b3a35f763eefe97011bf80ea171969aa7. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/JPM591001425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b44eeaf27d21fa7cef4877c343d6314ba5411155b1975c3509cbdfd7ed514d. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPM591001454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135b2ea119099da1a330c93d16c3203112c4423e87beb56989d5d745b5e79efd. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/JPM591001380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6d8f253c71d82738106f0fd829ff564be13bff7aecd3c95f0e5e2c1b90bafd. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/JPM591001453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd06021a02568b7a9ac41a9b2c309b8d1dcc121a35b656a8d356d9ea3dc7c46d. 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/JPM591001455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0559f712a8d638b3edaec55e63120c7b3a35f763eefe97011bf80ea171969aa7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:26:57Z), 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/JPM591001425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a6bd09632c6bcb0ec3658e86495c170b002f284297e2cf581879f1c989e77f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPM591001599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8ae5e6ceb3fd6a4ac39cdbe85f178940af799cea07c171b8a5b8bac13b49bc. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:52:16Z), 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/TCJPW2380842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2297f21217c2d5583e31efd1400fa32728cc1b3a51075802592f3c33bec32f90. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPC102400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa01effae12ecd14e361d93c1a0da72f8c6730aba3b41350f413ff1e76ed1ac0. 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/JPC102400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45515bc975bbcb29cb69926313602b401b5dacd1c69f8247eba0ea9713183fc9. 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/JPC102400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91372c27ac0d90e6bf498ce2c1bd18064dd35bdf20dc931c1134a6b1d4367cd4. 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/JPC102400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2297f21217c2d5583e31efd1400fa32728cc1b3a51075802592f3c33bec32f90. 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/JPC102400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b21f979e4e622ebce714cbc2403b15a1992568df78fea61d010ab56542e9ce3. 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/JPC102400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f2ca1c37eeb900ddc6255fec3a783f2e59bb101960029fe927fd92af10bcac. 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/JPC102400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa01effae12ecd14e361d93c1a0da72f8c6730aba3b41350f413ff1e76ed1ac0. 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/JPC102400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd97e0c54e0b3fffe568ba09f5d7f35442d4049b5bc16875bd7edfd3ab82246. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPC102400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3209b0d089235876d02ef4819baad32f6a4562443dcd7b6a26aa2ec3f508168. 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/JPC102400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc3157741da8664dfd28d77b4d1e98e2e53cc4175841c27dcf02bea60fd064f. 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/JPC102400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fcd9f883ae6a3cbc034129097b63b8781da35ea48039505c918a4c7bd1f97e. 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/JPC102400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45515bc975bbcb29cb69926313602b401b5dacd1c69f8247eba0ea9713183fc9. 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/JPC102400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91372c27ac0d90e6bf498ce2c1bd18064dd35bdf20dc931c1134a6b1d4367cd4. 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/JPC102400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b21f979e4e622ebce714cbc2403b15a1992568df78fea61d010ab56542e9ce3. 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/JPC102400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f2ca1c37eeb900ddc6255fec3a783f2e59bb101960029fe927fd92af10bcac. 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/JPC102400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa01effae12ecd14e361d93c1a0da72f8c6730aba3b41350f413ff1e76ed1ac0. 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/JPC102400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2297f21217c2d5583e31efd1400fa32728cc1b3a51075802592f3c33bec32f90. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:52:33Z), 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/JPC102400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb031d59a78c12200cd596f4ed7462ceb86a0115307c2374558847f29820717. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPC102400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd97e0c54e0b3fffe568ba09f5d7f35442d4049b5bc16875bd7edfd3ab82246. 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/JPC102400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3209b0d089235876d02ef4819baad32f6a4562443dcd7b6a26aa2ec3f508168. 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/JPC102400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc3157741da8664dfd28d77b4d1e98e2e53cc4175841c27dcf02bea60fd064f. 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/JPC102400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d8a5996d5e349a73bed0ee71ae8b48187ba55d3e5a3f97cff700e4102fb871. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPC102400274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fc8d4d098b402929e15a39227b803eb8b319acc77dfa185950be1307e000b8. 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/JPC102400275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fcd9f883ae6a3cbc034129097b63b8781da35ea48039505c918a4c7bd1f97e. 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/JPC102400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2d02066e7af3a748140899bd03d92b325e54d6ec67d6eff604e958eb714ade. 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/JP92L2422100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ba03a9cd5174bacd9096b22657d6bbe5157a1964d5c866a6f6c7b51dfb3113. 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/JPPC02210509.