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 0x43d8058f47ee52f75fdd7adb87241c6c4f3ea488758cb57ac41c49f6350f8bf4. 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/46de9ec2-dc90-43e0-881c-54cc88936b09.json and https://artists.proofprofile.net/proofs/artist/46de9ec2-dc90-43e0-881c-54cc88936b09.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 0xe58c4c63a5d7876945187a754b61d60bcf7b19232e45b465b10d50de51d07f5b. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/TCACX1795007.
Till the Morning Comes (feat. Brosste Moor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534174d1846a88aba55dd278f95b03fd8b25cda174a111680ae535e247a50942. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMDA61851074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1c2b208a4b10b3775ae3c90a213f0fb687638e3989cb0dd5b06c686984cc3d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZCE61873842.
A Lo Loco (feat. Happy Colors & Godwonder) [Innobass Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3314c5ec1efca8e75ce75c60644eb21aa81c55e39f26c60942603e731f2a3d6b. 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/USHM92035982.
Cuatro (feat. Maxx Gallo, Malo & Many Malon) [Imlaylow Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59660ff835b8bae7c621cbca1e8b01aa67c27a81adbd523e3f15d3bd5ae87421. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QZESR1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86423fc9d7ec003326c0454787b87eeb5eb9f0300d89a6526c3074b53a49f38. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZHZ31983339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4f0c92d54fe0643a48e084dc2c7b0499e0a48b97bebf1f2e8c099032269166. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9L2373836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9428ff816afadc6c7881a26c873d4d127dbedf2c4f4845b241798ef9397a637a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72409288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d86909f46cd39ff1ecfab8eb26898f2335efa16521a417c0f3be9e66dc1c144. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA72409273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cb25786b41fad72c00ed429ed997675ccc098c79427a4c7e740b83d59ff6d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72409249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d684f1934cb2ac373d1031ca2185ecca20d618f60eb1b270f647e72e91d51af. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72409258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ca51e31f2fb9e9a24e78e1c187bb6ac0a9817bbfa3cd624b342cabceac5535. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92420064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5681428f1fc86664f8f65f341b44d0e16411f0370f0225015c8e6fc93ee2e5e0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72409267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9f56c644286b7dc3a32758880715233f1b561c4fa53ebe804aeefd3d8080b2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22435801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc1bb2c07b4f0f9af07558327dd44e959a20b5f8d79f411b41c82670a5a764f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA62443970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d86909f46cd39ff1ecfab8eb26898f2335efa16521a417c0f3be9e66dc1c144. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72409273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2042cc803fffb7d4cf14783c2c755ba48af5936d1b9b79fbb74c60eaf122eac9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72409280.