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 0x15f75f3a4f18a55a9835be3a6a78f4108a4e0b85fe659afd78b7494501d26d4e. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa01de78-a47a-4c12-954b-98289d5e4a03.json and https://artists.proofprofile.net/proofs/artist/fa01de78-a47a-4c12-954b-98289d5e4a03.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 0xdca0655041428d58a03ce91c77a38a8a39c8bf5749fc5c49c40a5c72c7456dce. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/UST8K1586416.
Ask, If You Really Wanna Know (feat. Mother MaryGold & Tommy Genesis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f04f52c28c56e6021247cd35086c319b419642db648bf5290e8e4657c6fd5c. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/UST8K1586418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8811e6e9fd98e3dca96bad1864c88755bdeb0c2343de2842882db02ef4605533. 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/UST8K1586420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8d5821c4c9c912cf47421c0347e89bec4b5e73cfa3c1e351612aed17c52bc7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UST8K1586421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e50cad14d20f9fb53b8f0f4ce7919d2659d7b0c3563336100a516b0125e6a6. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/UST8K1586422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2690822975169e88c1e3ccca5367dde2dcb7cd439715c6ee89f798208fb4e631. 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/UST8K1586423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd789a28da00c017ca1e9c759a9faf58cdfb62c3c14985e5e2f07b126215290. 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/QZDA41847960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201c3d65836294576cacbd1b5cb9de5df12e06de499d44b2a8985238c8bed7ae. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QZ8LD1744802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfcf7add8f11e8efc1c17ecce0cae3d01186850e43397b149eaacc8220be771. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QM4DW1616474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0bcf199712f6f54d705403bac19f85932f1a4fa2d572f3c92ad71cce27f6a9. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QM4DW1616477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0511f851b270a178b125706c25453f18f3af213e4e1512850d823ceb8e72f26c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM4DW1616478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d66bc9afee8bd224098fe9c68db48813052d509de8aa0c4246e9ac6ec53768. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QM4DW1616479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e975b626164d16d4c32132087cb7aba61305c967992ebdf462fc615a638444b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QM4DW1610991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e3d1b9f8cdd3233286b6580fe58181a99dd66be26608845ff0d6e10f4d98c4. 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/USUYG1080691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db3315e8f3886f18bfbf1544527f65a6d63fb06705287e8f87aa10cc9ad0a49. 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/USUYG1080132.