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 0x30edd7fc5b04331345880d101221abb8edccb3679e1badef6a76cb779cb4f5ea. 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/b0580e41-19f1-4dd9-a7e6-75944d42417c.json and https://artists.proofprofile.net/proofs/artist/b0580e41-19f1-4dd9-a7e6-75944d42417c.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 0x7208f35d383f1f3a45ba99a66e30c54767aeec7bfe1c5a41b5017175f4ef1bcb. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:44:28Z), 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/GBQ2L1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d0692204bd2cab93ca6fc4b64848240cb4da370c711379a62e215f94063652. 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/GBQ2L1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a71c6292fca8543222c0b956625fb3c70a42d02689bd626e3843a7c65e2ee9f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBQ2L1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc23e3f0ad82bb34bb5410542ad6c114526cb34af8d58f7393e29db8b8f66154. 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/GBQ2L1800021.
My Soul Is a Strange Country (Solo Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf0b04b3a6b0e53518a2376b960ba48547949b0c3c60432166c24a5713ebe89. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:20:50Z), 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/GBQ2L2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f3209717ac3a93377cc824e996378dd5cc98f0211f24d6b56807908bdafbc8. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/GBQ2L2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec5c699607cc264ac27e9ad81d11dd05bf42cd3915fc1981578f2a9019caa5c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBQ2L2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd5e4be08fd977a1b3ef55888a5076605f62c65d4c4c25a9fc756f65fff1e70. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBQ2L2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d5868a27adcefc0252a24552b70739da4b73d29c9ce567f849b0f320c753a5. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBQ2L2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5a2606d92619077800f601e103602fca4031f421a9afcab103876f083b371f. 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/GBQ2L2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c25674657c82383b7728ea983b8b7a6f9df77a38a41f544908953fc7a3ef94. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GBQ2L2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c10c70235adc91cc618fd47d3f3d4be5b8d6d6ac531281f86d849f6d50f4e7. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBQ2L2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0861055cd431cbb07936b79c715c9b791323ae3c7d7c1692325c7cb2289d59. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GBQ2L2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b579c1d56e6d89a54afb05bda2e13417cabfe62f1d8675978c6ea6f574e078. 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/GBQ2L2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d4641e8693c0f52a60bebef1d6c018bb1ccc5c429d47531ab309f12ed58098. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBQ2L2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e7adc0fb78b4545ac2884c3282e6b955e787f1d4f6f2168b74de8bd78c3432. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/GBQ2L2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf744177782f1c44d9e501e60857a905d6d0790b74540564185e2e96c5069be36. 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/GBQ2L2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e0446811db082a811996a09cc382ca40130f0e7e2315d354b71fda4c9f8e81. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBQ2L2400010.