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 0x8d0391536f72d05e0367bd322a8bb715dfaa24c98f8fe9c6c0514d2c9151312b. 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/6abfd56b-1fb0-44d5-9e27-d0977d263554.json and https://artists.proofprofile.net/proofs/artist/6abfd56b-1fb0-44d5-9e27-d0977d263554.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 0x4b56f594feb6a84ac0c53aaaf5344a4aaff58033c5ccf9e815398b8933e8cda0. 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/USQ4E1602126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089f2a1dcd373bdbeb90eca77e6753c4482883c76e16da2b8d11dbf840923e8b. 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/USQ4E1602127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6568d8e0425120e84002939f4bcdd32d20a921291ef58326bcba1073d4b45935. 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/USQ4E1602128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4798a966af479192929058162120a69330db0cbb8befe2d43410f317f9620a8. 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/USQ4E1602129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17189c5eadb767278c12263c8f4ba2ce43e28d926d898ae42bdde3d2d526e87. 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/USQ4E1602130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b349c33e8e8eec4b57d0fe8153f4d44d11298d56a23f634f0d617da9ef2da7. 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/USQ4E1602131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4036e664f7e520054ae1c6193a1bca21f6ac78f4c0bb28f972dca5e9ad63e884. 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/USQ4E1602145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd0dd45c1c258614800f9fe04cf3e037df11349922160dd87de0ebece6bbc9a. 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/USQ4E1602132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71518ccad031008aee049fb49367b26defcc25a6f68e5b548260b00ff027459c. 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/USQ4E1602133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a80aa7d7e2be4e8fb081622c555b8825bc99ef9071cf42e110164dc4f94180. 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/USQ4E1602134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf46559dfefb509f2de85260a8bd82501fc855b98b36cd177a8ee87c02fb94a8. 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/USQ4E1602143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1731947d387bdafc33f55548f65f9a7c658656471be4d82926db8643b1f5a1. 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/USQ4E1602135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2007fa42e4c967db4b3aec9303e0b91378cbb0dd1e151316e959a6a8034f7aeb. 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/USQ4E1602136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845ca4141b3f88b57f6c2a8044c0a3ca031a23dc949c76511378129bbcb5edd7. 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/USQ4E1602138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf337f4497b09437df0c53198be7b05230786f34327d5cd6ccca801b3d48145a4. 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/USQ4E1602139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8eb87f0d6c651ef26b24ba9828ca79a10643fa373bf272dbb3f681cf719137. 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/USQ4E1602140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb239d648d543aad36e1fdd54cdbf0d1b9b7912342e8d6b98e1d27ad93961f6e. 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/USQ4E1602141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5306ac362b72daf42132ff3d347558e13a4fa76b3ad86ba2056e2a63ad42234. 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/USQ4E1602142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c673b2ba5df6f2de3cf9b471fe04710b9227bfb676497b20f48263cfd39fb6. 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/USQ4E1602144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1dc00878a42802881cd631bdb681f7bc5f7f2aa458b4b435fd521973f9eebc3. 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/USQ4E1602125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82aad1f68bfb89628509d0980c6cf720df4b819d5d404dcf1b50ce54cc96194e. 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/USUG11600353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdba40f249fc1d1ecf9cbf1dcdf7c7ad51b5895b79036a98ff809a5b61ef4a9e. 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/USQ4E1602137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc887e948ff25555dbd0ca96f19fc15d46ab69ef60982ee20e3e5203e605d834c. 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/USQ4E1602147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aef64c4413ca85347e01e16d8f7658f1a79bf19c3ec7a8c26272cfa2017912f. 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/USUM71105295.