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 0xd4427ae0b3d9d6d585da43345f43bcaab52935f9df461dd8f5f5458d44cb9f52. 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/e624e1eb-1a9b-4955-9976-f21347b8fef5.json and https://artists.proofprofile.net/proofs/artist/e624e1eb-1a9b-4955-9976-f21347b8fef5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Strangers from hell (Original Television Soundtrack)
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 0x3f973e003dfcae1576916fe83af6e2de64c9bbad591a671c57eefee91b170998. 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/QZEKE1916860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc7ecd01877fb3a07acfa79d253d3c1075083df21fd4643779fc2bbf1669f07. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZEKE1916861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2893c0709d249e238142d31c5c0a4cdc17e4cf972db583851158bc7be0bcfd26. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZEKE1916862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8599e784eeccf123f4be9a1c286f2585cc1eaf9d24bc66b597cf582b386b448. 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/QZEKE1916863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2099741d98f0dd7bf32b219909e1fef1b48d5bbadd335641dc77bb9ebcb0e6. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZEKE1916864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6356fa200ff2759b15397f087dcc4e6fd5b58c8006b089c79f252e4b2921d827. 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/QZEKE1916865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee534edfca1c7ca7d52b2ad9dc34a05aeb562175ce62cf1e29bbbe668814804e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZEKE1916866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ce91ff3ae1a3565f67ad8af28dbaaadfbb70ae59df2887cd503b62d984d299. 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/QZEKE1916867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12adfbd2534f32f5fddf8d79c925090ec7acb861d19aa34dce8d33456b8b893c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZEKE1916869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b65481f725bbb2c05957b2ff525e0dc0adf74fa52a5bcc9dbc5a3000bcb3032. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZEKE1916870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccd18065a229fc4195671824d2b585af7ad8f89b42a5b67d80e1741b4d93fcf. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZEKE1916871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e502c456015201eef56afb27282f112b75e5a9541b8987640d2738c623bdf10. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZEKE1916872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8596f0f895bff47aaa538f456dea65efa67f6fe4ce6ff3dac1adfc6fb535e8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZEKE1916873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa178dd827dc7dfefa97e0eee674e986b8d7b4d5431975c5a3ce213ba6f371c. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZEKE1916874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62395a99f3e3aa83107a2d4b6c64b938a32edec3a971e4ab7afbd464ec8a5410. 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/QZEKE1916875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478b60d59f90b7eeeb968db8db5589c45ab65fdad592a122cbfa4713b858c11f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZEKE1916876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7974b5456f2b4ac873bbdbd193d1f77ed8dc05455086f8f8db17521234d3161. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZEKE1916877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffec277f42826489ec82329f1088c8e826623521bd2601c94831463ee79cbb90. 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/QZEKE1916878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fc4cebeef99cdd3dda49691119fc1dc6b70d70ad8b161f009e141828cf02db. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/QZEKE1916879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea44d80f9a1242a6edfddf509f4aed871ca5c60e23f55784840dbd1d49a7b15. 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/QZEKE1916880.