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 0x99f7000b4af34c5f5af85b05fbf6171a0622f40c0f827e7c4fd79fc942248863. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea43e4d8-c4c5-4b9d-b4f1-c34278ea2320.json and https://artists.proofprofile.net/proofs/artist/ea43e4d8-c4c5-4b9d-b4f1-c34278ea2320.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 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 0xe645ebd1d8cb70534576ee2b1d5dfc273af71536e70aac87949da67e0ba4d0ef. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY252145739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7c7e36da743337a84dc547469e0c26a740fce06c1b43a31344c80b2596fddc. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USY252145742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29a1c85645a02d14390318c9a9f02ed3941cdca0a8d075abe7daab2e2385212. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USY252145726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db96cd0ba44e268e357b83c992d17b2d5613e167bff950d5c4a5cb96ea72869. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USY252145727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd70c73eb88060d9d31129ebdfe053f2f948529276411b5b7ae02458d2f03af. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY252145728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fa1cce3dc802beaa07d5a286905e68cfdedb55d0981aae260fabbe2d58622d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY252145730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fcd33f49cdae8270c35a083a15dcdedbbd882956ba96b8ea6def61603deb7a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY252145741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf42327b999df28d1d9533d7011286d252dfc0386c0e227c562880db90c697f4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY252145744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c928115963263b21405da72baae73c79868c98c35db172ad48f87efa1ee3191. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USY252145745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69eba20a5e85b1902029738214f7cc41a36c7d4ef7f14a2db100b01f3a1b7440. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY252145729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bab3887d472d48aa3a9903bcce164f097202f84d0b864a650ad8803600fba5d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USY252145731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1795ed1f3563b238d223d40f3c0d87814f73539b029ef13a352a8d2ec074051b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY252145732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0538bf803529437413ab81d289b2a95b7d8a8588582315482e0d17d4afc2f1d4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USY252145733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666079e87d89b6cdf0ae36f0e11f5c087ea726b8382610e1241ccea46ee4948f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY252145734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adebf9d9a4f736fbb9dadbaab2785466c176925d849f70bd6b68e417f38411b. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/USY252145735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60122a140a65b32ef9c50f2195a6eb84a001a50e91cb0a010f83d8b28af1ae39. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USY252145736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223cc99c1ee8c3e73a805e40974d65cf022e2a8bb929772c66282bb76a0b1ef0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY252145737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915a77ec3073783e872433bc8c39395e8b2ade02ac16d5b1695caf2b47399f68. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USY252145738.
Could You Love Me/The Green Rolling Hills
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2936acf044f449e0d34c6f83e9ee1b77071808c78afb6c56e581341f8179fa6e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY252145740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe301ef5348ef2585d06e272317744eebfdde746706911cb3a6e35a787d92150. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY252145743.