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 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 0xc2ce3e0b7323656c373d0ab67b0730b60a8817f0ec9935e69e3b26136ed730bd. 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/6f0b8f56-f4fb-4c18-97a7-3cab1748d8a7.json and https://artists.proofprofile.net/proofs/artist/6f0b8f56-f4fb-4c18-97a7-3cab1748d8a7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xd9cad25040dc73af952aa1d0fe6d486079bfbd6be87f3f990b1e97c74b979c1e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USG4X1300053 — a six-check JSON result.
Give Me Your Love and I'll Give You Mine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf672b9f5518d652e27044e767498d1bf0859b387a533d33d9b565412d3909595. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USG4X1300057 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60d765adec546b2f519bf9e820def7ec5fece56368843545c4551da4112c57e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVG29652946 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedc5303201f8aa0a88a4dfcaf35e3aff287f1828e90c741a299217a0623ad85. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVG29651830 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc93ab8750152fffc85388c7b34b7df374f5ae5e234f5ca7da3ab1e53cdb5fb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVG29551890 — a six-check JSON result.
Foggy Mountain Top (with Mother Maybelle Carter)
The Essential Lester Flatt & Earl Scruggs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa765840068becedfab6b35628cadf3173cfe24d5df1a19a9ef5f52e97d45c72d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19915998 — a six-check JSON result.
John Hardy Was a Desperate Little Man (with Mother Maybelle Carter & The Foggy Mountain Boys)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98b9ff5a4266f9860a2324187be4eca74969c93c991bad6329b00b7a49835c7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10400378 — a six-check JSON result.
Keep on The Sunny Side (with Mother Maybelle Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc1ac35d3c0591484eb50f7e9f652dea535104185d8f72f32ccfe98a8544e78. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19915997 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa765840068becedfab6b35628cadf3173cfe24d5df1a19a9ef5f52e97d45c72d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19915998 — a six-check JSON result.
False Hearted Lover (with Mother Maybelle Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14a3c5c49a889c65aeb6a5915186eff1942420f6fdf02ac8db0e1d77be65e27. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19915999 — a six-check JSON result.
Jimmie Brown, The Newsboy (with Mother Maybelle Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde7d13f79be87727d3d98046075bf1722133ab841cc760c667e7168f862d2e7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19916000 — a six-check JSON result.
You Are My Flower (with Mother Maybelle Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ff6ad4aec6dee279d6bdb48b9d0635a8bf7ca340cf4a3ccaab010f754e2a2a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19916001 — a six-check JSON result.
On The Rock Where Moses Stood (with Mother Maybelle Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0df4ec010a3e54bc1e60448fff0a4bc6e69585c59ac19d07bef425d9b43139. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19916002 — a six-check JSON result.
Forsaken Love (with Mother Maybelle Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa392f36eb64739452f2ffd77212ad988cb788421b3193cc1dba0aca10ecf4107. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19916003 — a six-check JSON result.
The Homestead On The Farm (with Mother Maybelle Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209e5b41ae474780a33dae574c37380b44a39716a1834f9b7f1d06f0e21b077f. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19916004 — a six-check JSON result.
Pickin' In The Wildwood (with Mother Maybelle Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5187ab6ec0c5bb8f113a11fdd971ed314291ce7f017c354a8f9941ec615e43. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19916005 — a six-check JSON result.
Worried Man Blues (with Mother Maybelle Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb40dc7503c3d7832d6205adea33aac7c9f2313d8d6065f530089552c7d98be. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19916006 — a six-check JSON result.
The Storms Are On the Ocean (with Mother Maybelle Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ba1c237b73c827ec2a718ac9a1e890e32062941bf8430135b5c8be6653fd56. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19916007 — a six-check JSON result.
Gathering Flowers from The Hillside (with Mother Maybelle Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b113c4b01d8c0e603b9492990a4e515837fdadb0b12cd792790f53ef3362ced. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19916008 — a six-check JSON result.