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 0x46421c2f74a2c5116277987919a9788e0ee4820c7fee4237f354ca5c6f2a670c. 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/a2dc8493-e148-4564-b8fa-9dd8f4606fe9.json and https://artists.proofprofile.net/proofs/artist/a2dc8493-e148-4564-b8fa-9dd8f4606fe9.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 0x8e81d545e808c14f08268dc164c6e430c190b4c3e43b72da232931260ccd8162. 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/AUADY1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b012b67ee01583bab637a55cd372b52f1ff5e3fbe7c0c2c9a0e15f1c281c107. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/AUADY1900021.
You'll Probably Think This Song is About You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894d6aaf5d4e9987b3293658316e8aab45d8f0eaae523737558a20c4a8c16f7d. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/AUADY1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffd844d48ad7f9c7ee1751d8537e22d84b53c571cc3eab8e223379fb09ce9ce. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/GBX722400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af606046bf1aaf56c32fc889e8880ed61cbf423478e62329f9054ce795d846. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBX722400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca7c9986fbe956f4a7d3edc01c8b73fefa2d3f28d183ef7e05115e3e3f66242. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBX722400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a93e5d515c5ffbbbca872ff2918a72d82ad39efe8551ba1d0618b1c80ebdf9. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/GBX722400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af606046bf1aaf56c32fc889e8880ed61cbf423478e62329f9054ce795d846. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/GBX722400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe550e038abc84925324a8ddac8c607592be2643d08a3e7b854ad4ce5a216ca0f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBX722400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e15692102ec4b01f8cd378d87b11ce35b1f212787e1886ea8b524627d62fb7a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/GBX722400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22ba872ad69545b5eb48ea1d3517947cc8b02e72c2d1b909c04e98c39739907. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBX722400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde7cc771fcc8f098aeeadc19cae025e3f43bb71c00f09b9d961ddf0dd1ecddb. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/GBX722400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffd844d48ad7f9c7ee1751d8537e22d84b53c571cc3eab8e223379fb09ce9ce. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBX722400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28439e5c1ffc789ab0f91524d04837d4a5fcce71f0ff4f2e1566aa5c369d5184. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBX722400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af606046bf1aaf56c32fc889e8880ed61cbf423478e62329f9054ce795d846. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBX722400129.
Room for Everybody (Mary Lattimore Version)
Room for Everybody (MARY LATTIMORE Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41425ec37cd0b31c7b301b65a446f60689d295f6003ea93c92b00569f4ffb06. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QMFMF2571686.