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 0xf2ec599ebe4eca1b84d6ac2fbc378bc5ac557a00c4c1a73c7f87b7d2947922db. 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/c8016d5e-ce19-457b-ae17-9302cfb42334.json and https://artists.proofprofile.net/proofs/artist/c8016d5e-ce19-457b-ae17-9302cfb42334.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 0xbfc9c512d9b078e2f559e9ca6f3aef10045d61a31d4b0df387596e254d8df6e5. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:57:54Z), 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/TCACE1582245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40496f2726812059ee5d9d28ca9e8b04b0a191d9ec31ad2d52bb07936a0b026d. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/TCACE1582248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef74e3a9ca947ae6db1fe95c717d223f41138c5048db390878ed05589c609c8a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:05:20Z), 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/TCACE1582250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cc7c15f4da4e0e3265b9cdd6989b4156722f6dbf9b615e4637de1e4d2e3f54. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/TCACK1597408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc5454939cfefef23ee32b9f4c9fbdc6a935e4acb726da3caff818cfab08b14. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:06Z), 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/TCACK1597410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14218cac32f14b030a7b6977e33a612c590ee9530cfa6a34b62866df0f8fba1. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCACK1597411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22d6135370c269385f4335f460b5a71ffa141ab00b5e08078cf084331bb0ef3. 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/TCACK1597413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c760a12f2a37ed5b42359f1ee0fc7a11d47da9f44da0f532a911e18be16161b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:49:15Z), 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/TCACK1597414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef786ed19cbaaeb1e2d46e87e9edd1f037669d7c3ddd251efeb3eb541415d5a. 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/TCACK1597415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb040686bceb276e6174102a9b8bf4fc03fade5ba05c3e70aeb1e463e9924594b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCADP1855355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bca09256228a9ab4cae2f17f5854f670d04615976ae9d510f1e077f76d33513. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:36:15Z), 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/TCADP1855357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bf49882f0cd86d7195701de3451e3237ea63288975f199673f003e8d36394d. 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/TCAFH2035820.
Super Jew Anthem -Dedication to Sly Young
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdb30fc2f2868eba2d99d9d3e70412f2804e3e3c3eaf7baf420e0eb1d77402b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCAFH2035944.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa193596eee30fe5a5fd95662ff1eea85c7ec496806d998075ce2b9650baace52. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCAFH2036056.