1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x7e061506753f7efb8c2dc7565c9622c026a7d0aaee8b4ad3409d3c02007eef66. 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/fd1dc0b3-1df4-4468-bd77-489bb3044aad.json and https://artists.proofprofile.net/proofs/artist/fd1dc0b3-1df4-4468-bd77-489bb3044aad.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 → block OTSBitcoinBlock must exist at that height 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 0xa8ca5c728d4e92e9b9e5ca3b461e87dc35a4676e8f9f8f925369dd6c382ca519. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPU902000295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1eb15dc20f2866c9e0796af427b604a10b1cd0dbb4ff0269373f596408a22f1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPU902000296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ef42b8faa25fd5be5e72d3fc4e86701d146b04bcfed328d0f527b7923263d9. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/JPU902002003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2de4c2adc66600c9169e72e07f61fd318e14e6cc718877b7bd9471933a12fe. 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/JPU902002005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa689507663d5da18c3638a7b78255e2683e150955356df5432f82f75214d2161. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/JPU902100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba3d13bcc8d23cf54b0553747d261e53fc383225cb04d7774d9b5304ac2a7b2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPU902100848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423a51174bfb4290787aac220d202bd4a4f9ce22f611acb2ea05bdbbc2aefbd9. 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/JPU902100850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fe0fc701075d479f0a32fc6fa310c7dfc5b2a088991ac499f4d203c4d46607. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/JPU902101816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160d028c984bc580e68bd878ecf4d300cca6b8a571b3d90c9fc6c6481c0f90a4. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/JPU902201541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f16a11c884d3e43a1fced282e0b9cd66945d8018d631b7cc26062e09953b50. 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/JPU902300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fc1e8306ab5fd47e4a2326648d8d31705043960932f6452e5ab527b8dac3f6. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/JPU902300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e4e1b71cba4a079b836d088b70f24728289e168a4b25f7927f98769195904a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPU902300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d56faa67047a0be14381feeecf58d63c97563600d562da997e0655ba89c59b. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/JPU902000298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3296852f52af3808ad08f2fe6d484dd8ec3a52d379d9e58f7cf1b04b041383ce. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPU902203369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9265a2ed756141ca5e87f27f8d388ff53af9b21c6be992ac3013fec3c60003f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPU902302547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7356b5753c218963fd935fc128e39c7b222011f0f8fb5c2870b6519a56a9432f. 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/JPU902304149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a16ae7fdd07149a74787008eb13fe9c0ff005449837b0d2022d18963528de9. 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/JPU902304709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6c7fc563fb5c5f1127bd2a908309bdc9d7a47c39e4a9d7a2c271031257acbb. 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/JPU902401270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe319d349fdb628de57927ad97c709479715fa62e24436dea7528ef3dafd7ea80. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPU902401596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5064d8169deb4b93a27f3b3ec147c387e2e22295cf93686fb41f3acc5abeb0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPU902401777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22930e9adb3d7097b08e7b8b2ac593f07537b27a97fb2cc314d35eef5b4cddb. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/JPU902402220.