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 0x94c7b095b7249947a1ddfd305162bb3d746dc7a8e550d33e53145e4f871396ec. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4ba4a99-c6c2-4113-b6e3-601aa217b50a.json and https://artists.proofprofile.net/proofs/artist/a4ba4a99-c6c2-4113-b6e3-601aa217b50a.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 0x94527cd874d59f64d19d6bc7e5c8376450717afb90c127281c6af7cae58d039a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDM32019502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bda956f73b1cbbbd0184ab81fd4d4d37253a2255f79f5c2e689e887b8551d18. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA6D22100424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec342233efaea982463ddb1be1ed350cb44602ec43b6456d1622295267423d82. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA6D22100421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980d9424deb4acc4947640f4a5bf0120035ba7e690d5d4dc66a99f182c920317. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA6D22100540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39d58bb1b8be02feda4e93cebf638adb2b06af821127adff1b4439c8b5fdffb. 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/CA6D22300524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e53d9be8d06422d2c35703272e634dc77232e997fc8a7cf65f26f0d4262f837. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S2307654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5371bf0dd973ec03e58cb954b56c5137091af950479fd7d69343bb4e5d5d86a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB2LD2320262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc730af16dccdf8fbb298d6fa90c2894f57db3aa9530b29b3b229ff4087c195ab. 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/QZTAX2318024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60aceb7aabe5c806d083febe67f82bc36df414c9053894d725eedbd3c44e592e. 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/NLRD52023117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cce8763570d9cab0b5c16a7d93e2af9c6f62268b1c27a93910a8304f244af1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB2LD2310071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae97b531486a60dc808c161b60ef1f1989ec0e40b2f1d65597962d36c7f00a9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLZ542200709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a14895c747d4896d0827b4438e91c12d78283ff56fc6f0bacf42250db7a378. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL2280367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97601e93bb1d7f05da223f818c2e2461a5c838d9ae1fb73b6dd18ea329d7ebb0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD2110325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaafeef4b437b88afa16cf6ec8e20b7d6a2679a30f2c3497fd04741278405d1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2100231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562432702dc75cefb6e3ff26eff7e924b3c118114dd8b53d19650bfbb1def231. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD2010201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ca3d70f4b81cdcbb197dc6f42c522b79d5fa7eff7a15726ec9c7c5d4aa3ad8. 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/CA5KR2050912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323893f1918a7cec6e117bf431702df762cc1025281181bbac83f249489a68e9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDM32023303.
Rocket League: Sideswipe (Original Soundtrack), Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d873627b5a6709cd9839b478190dd1ab8ccc0ba0b3e737c335af0f798acdf29. 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/USDM31910501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02431715f89185a56534a41f1f534f3572ad9e08c722d63a7f6fb3ae7d32c84b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USZ4V1900037.