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 0x4743ea9ce16de0cfa47f8787947486a359838e45b7095fc07b8ae7e1c7049b00. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5f533be-9ae4-43fa-bcf1-200efc8905b3.json and https://artists.proofprofile.net/proofs/artist/a5f533be-9ae4-43fa-bcf1-200efc8905b3.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 0x95373837ad261dc97bbdd74610af3da2efe1eab532972d42bea1e422cc2c6ebf. 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/TCACZ1730956.
Unshown (feat. Badxchannels & Fifty Grand)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee0eb48679e36468c92ba9043620082f46324ff2a2ed39ed21bb3bc3468fbff. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:36:33Z), 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/QZBRF1810441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f14dcaeba3bd469414fcbd2648ec03d2401c2dfdd3aaab8cb73599ee1e2d7a1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES71826646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a244512d63ee42c68fa926a11cf4772cb1f76330cbb3e544a6b17a6683b5a0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZES51914037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a237c215636811e5883d159ea01505fe3ef1d0a2af4021f947b930fd507ae8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:34:01Z), 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/QZDA82236325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6879f1791a12fa5f1193720f38111fdc6634202c46300264a2cedbe75cdf0a. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:58:44Z), 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/QZHN32203690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0de67cc4879005e53c29b1fc9ae6dd1feeb4db7d1599ca65177830160a2efad. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZQAY2350441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfd64fdf10136d5373a921fbee6b09e1cd3859776a080a93e44e06196e5111b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:02:55Z), 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/QZQAY2398045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141e1e88a2e821c348130f49c6732697f4a226e5b766c8b4b18dc0ed3ca88749. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:05:28Z), 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/QZQAY2359226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c0209709b909d98e15864047b2ba0c4c9b25838fdbdec6aebb297f6bf243f5. 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/QZQAY2366938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd59067147c3555c29df816f8283b579ec94415735323f4663c97dbe9a87ee42. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:58:31Z), 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/QZSYP2373994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ec7485d5888bbc83dc51acf9384e5475eb3fb78b65d9cd3c65930d23fcd73a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZSYP2394563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4c39dde168b74fba589280a679f46d0b836f7f9ecdb5494492939dae7478f1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZQAY2401518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c455164610bcb4bbf2e51fa0da98dcdf05ae425cbb107e62b11400ca86bcf8. 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/QZQAY2426196.
The Harperbeast (From Fretless - The Wrath of Riffson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11f34fc5a7b9dd9d9b2114e48221695a666909b89f1c818750c44fcebfa5c99. 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/USC4R1802387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a797ec7a6b67a32e1f927bec0c1c4249e7be77f89952f7a9e68288c1520c77. 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/QZQAY2434832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f07ac8aa125c90fb1a74d8fe9327b9e9d4a9dcd8c94c780d4e37cb87b466c6. 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/QM42K1609766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b0586d5a526f41375b1b94e8382e3131a03a4ddaf09f9f37087f501a2f6b30. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMBZ92257962.
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