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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e8aa200fdfcb519da1fefeba4c67e2000a6a035c6a681404963d70e6d92be5. 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/74dc4632-e5d8-4136-8f06-c65eb4c5d3e0.json and https://artists.proofprofile.net/proofs/artist/74dc4632-e5d8-4136-8f06-c65eb4c5d3e0.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f34c008c370e0d6ed21e58d6f575cd938fc75a4f1cc0bdb548fc42ca7b67c7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZPYN2365184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c4b2bef037034b6e50165c106534e030d8fe61dd319e8558c3a1feb1603f75. 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/USFHW0600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feadc7498c0fba36121e8689b64cf972093e9037bdd3a45a810f39d404a709d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USFHW0600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2b0036a955a9d123eaff255c173eb558d7723b5aa8b3b16280afcf6eea95d2. 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/USFHW0600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6c51e80ffb65d780e6a2437185073dd06063b89ef0bf36bea52e6a121d47ee. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USFHW0600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431a895294dbed48803085ba47dc1caff0538640c9f0a5763bfc1076ec0b2274. 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/USFHW0600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867443a3c33d1a501d5760609c7bf1370af1df162cf47e571a2ba133b2f3aed0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USFHW0600058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179e1503d522808f2d85a04b04bf007fb4d48f38a807bcc8786328d21c85d9f4. 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/USFHW0600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ec7b54fb6ade1e36f3e47ecbe470ed712b2e015ceb0b9da7c0040c7e5ab468. 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/USFHW0600062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015eda1a245d8c5097cfde9aaf920d1afa7c04b9adacbab06049974d68080c4d. 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/USFHW0600063.
Lionheart Sounds: Troddin' East - California Roots Family
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e847235285a09d18d41c6d63296b877a20a2ed76472fe8749d3e9ab0302526. 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/USFHW0600192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba1e19359f5ee71f89ad91dd4358c8d233c7d37391f902063e6bd856e7ba3a4. 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/USFHW0600193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a249169ac7bcc991db723941d37e1b05672b7430aaef6b65ecc073f7fb2bb2. 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/USFHW0600194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c73099a6fab4c2ffbec012b226bdb276c3a7127b028027d6810a00442bbe78. 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/USFHW0600196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b83bb52944ae39ae881ce27854dd0a5456786a26968b869707476789ad04ed. 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/USFHW0600198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402976a5a63f5c3922aaa71600f4de36174e6b9074b96c117e88ad11d1292ab7. 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/USFHW0600200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428e89b15b84d6db39df813f88761abae8208540dc7f8b94ef52a26d47047f5c. 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/USFHW0600203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4f44fdec3a315b1c8da2f6a130546ba9c0f1e75a433677a8a122b603243965. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USFHW0600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8742f8fe26d1b8bccaba2f9cbaa5d1a1d59b523cdad41a958c72ce484b882bb. 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/USFHW0600094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feadc7498c0fba36121e8689b64cf972093e9037bdd3a45a810f39d404a709d. 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/USFHW0600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e2d91e4d2306da55efef8dc4fa76e110ba1fd9143c928f5772f187107fc333. 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/USFHW0600096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7ca8e52fd6209caee61310cd3b556f4806e50e029f7853b2b66235190470b2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USFHW0600098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ba45faffdffb602a446d8c5f0802d7d008cfd9da391e5bca1167b712484ef1. 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/USFHW0600100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbbafdcfbe0473ef7f0fe0041ec8fc39b72dd4f4a9a8b041eeed43ae2b0a38e. 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/USFHW0600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fadd6f78634b2e4f0d0fc504ed406618a26d44be25bc03fdf6cf296381da8a. 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/QZPYN2383178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fd143d56d28596977e27ecb21274c8092206261ebc0a3fc8b58b16abb97145. 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/USFHW0600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cff99115721e1a51669602c7cf5ffbd48ff2e3b5b86077ffe39b64a331a62a8. 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/USFHW0600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80f8072fc843e3c3d9510d166175ced4097e5cf07e6e4eff8454835a97a6ad2. 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/USFHW0600108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5584059b3eabbbf9cb550c8ba68cfbf6439dde031c8c100b2261f3f0cc1a5672. 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/USFHW0600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aee5694dcc2ea105e00116a063d27de46fb1d78ba3e1ce2e8410da0e6a9499. 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/USFHW0600111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1795abfe94fab9a5e3a2696504597e5eaf17314fe043fd3ae45977ec2d2fce8. 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/USFHW0600113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a65cc5d2d1bc17dbc9be3c6ee9b56b21ee115d764e8b7b7922700725e77e682. 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/USFHW0600114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fc5f3c2680561d016c3047739d011c03d84b654599eb667e68953ed71b3d0c. 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/USFHW0600115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431e2c1d578dd0ed0b8df4a3fd7655b0e0843876da57207514ab93ca7754d766. 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/USFHW0600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc61468e5d9bf7de83b913b328312d06fa6e5a2bbfe48d80a8cdf4f32f065b3. 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/USEVN0700184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e739aad700d60f478937b7332fef940ae52f6d0bdc04b475a4ec222a69746c. 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/USJ3V1827878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0f13ff23337701cef50a1b70815406ddae602e499f1848adcfe99b531979e5. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/USJ3V1827882.