1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4f20e3e90835f7e49c2ca2c2b39e28d42d93026ddda32de3ebe0161ca97763. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed68ac2c-eb69-4ebb-a012-b353bbbc8334.json and https://artists.proofprofile.net/proofs/artist/ed68ac2c-eb69-4ebb-a012-b353bbbc8334.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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec19b44ebc169ff7844fc046755b1fc53c0d20b879f1da230292849e76686a8. 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/QMZPB1900397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b406c9ef055a2bc3f48e4f05e0e5adca9fe80bad1fbaf6fa265bc6282e2710. Chain 2 (Bitcoin): anchored in block 957287 (2026-07-09T09:48:29Z), 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/QMZPB1900398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dc660ffeaa03d208a5ba543b253cd1154cac2b8cf1cb10a6cd8ba93d895024. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMZPB1900400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7a44f1e3b4b2236af6eab9fd9957c900206e12440e1c1472ac6d4e81fda76c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMZPB1900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0825aeef867362a88b64c5545a2359c407049d240d739ad917997932f8dc0d3. 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/QMZPB1900405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d109eb54431b700f9c37855774989a731194846458a499e96511a3d46a8206b. 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/US4KC1167301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3853d306b99c2fb524c226dc0b6a0ee8b3ecfd02fe68a6ea720dde74cc4476. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4KC1167302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9435a7ce287b2b4d799a53204001f5b46c30e6bf98fe126dec6fe2a12d4bc1. 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/US4KC1167303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c92191d8749d3c5e7e908fa4c043fe8151326c46e3ca3e0ba1f704a3fa71a20. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US4KC1167308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538ec03629e80b30891512fb293b418c8ed61506dd2eb1e2ea3fce7d68fa6434. 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/QMZPB1600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d0d961f63e860bb13e2c91384a5b2094170c963b95fb9c14e97476f3474636. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM22031934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483493d10e9ccb034cac64e8c5a844aacbc2494c70f2b2da6629ac12cdbb78ed. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM22031938.