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 0x8149e25487b42066d485ed2a13eea53f83bf9bcb2eed9b28c1c12ef6197f32cd. 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/9dae1a1f-81c5-478d-8230-5512a4d7d499.json and https://artists.proofprofile.net/proofs/artist/9dae1a1f-81c5-478d-8230-5512a4d7d499.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 0x92eddfa94d12fceb7ff0b7ac9437b44efffabb6efb1c8e87b02392c06e40669b. 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/QZTAY2260929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119c5d9d756d68dbf8140c1b6ffd726cc675aaafe47888f7b0b4c3f08c48343e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTAY2260930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7e883098471fa20a9f4cc83c3fbcfe537f229df4d0fa94b25dcd73ffb68b06. 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/QZFZ22321694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3d8a3ada6850339f808fbf702b2d0997f423b94668c1dcdd0b2197bf10d44a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ22321695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5909ac47d0055fdfdb72e00ed3010cb6cc79697c4defa6870e7acb3c7fca2fe9. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZFZ22321696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f0c8a0a0022928cf2c683339294b0365dbf240bf84cd0c35641036f0205c2b. 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/QZDA72395859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9f7614c1de0c48c6aeae25079be59e0a5ec640787b9632de53d0fe3bd201e0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES92350258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a88d7f82c181ecf663e0e4b61f2ea37fc01c6e9b6aaeabc3500a261ee1ad89e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN32365902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6b3e838e6d23a6bc2a9809ec6dc285c854080eb92b0f6838cd51d757414009. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHN32365906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d60bd4f6e767512d092fef51a085298e115a646a9a28d51243597a45582316. 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/QZHN32365909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7257ca72d95d36d9327bc83f136affa1cf5a8616178a2dee5ae395c7a79ea9f3. 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/QZHN32365910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bf9b7ec9ab4a7d56f559fdccc53bef18d41035b8733bdd1d0c88441e40be30. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZHN32365911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf78e1653ad2786e913d240b6396bf4dc57330e30c525266a61fffe755386ba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHNA2316149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a269e94baf32513eaa9d30b6ec9a49adb60b03f2e4aa5a075be72900b6c5e54. 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/QZK6N2379811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e50a567f76b181400be3773cdfc5e97a687783d0d419629cfe8b5a2e06470ec. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6N2379812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12485c24019296b97a8522a53a0b0282d0d41b984a2d742ac2334f83d4425a7. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZK6N2379813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba9128e1d635410b0d7c1fe9419bf676bbd6eda3c194c63aab39e959b3ea57b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWV2302868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea263feaf63616f0f33e355b08c964f532dd3a72815a9abf80f489d32a7e23df. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWV2302873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95e3743cca59f023f800fc0ec275365a915ae20c8206ad786c9ae197cecd69e. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZNWV2302876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe223feb5ee7490b9a16d4f73eb055dac08ac7547be2dbc9c64d42faa05682495. 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/QZNWV2302877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11566432a233c28a00ad69a7e3c4950692b4bf28e3ba44cfaca94b8b03a5b23. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWV2302879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177064c968338546b208869d8482a972ba5c24730b11d7576feeb8e6d46767af. 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/QZK6K2365312.