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 0xdc49fba233a22b5ae8dd790d98795fef55f948be00bd07f912da46f393ae3c45. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/119e9142-6e27-458e-830d-6ae5b519f3b2.json and https://artists.proofprofile.net/proofs/artist/119e9142-6e27-458e-830d-6ae5b519f3b2.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 0x52b6378251b304fbf99e8b89262abb1d6b315f505d3665c6cb48ca0c3f6bf1ee. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US7VG1850678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40d03af1152ee0683daf85697d4544388c3d4ac84cc01299d060e3d592a76e7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRUM72200586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ab2c19b0c1cf69b048095ae94a2321757ba8e376e707e352256a7d921872e8. 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/BRUM72201079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb546d4bbe3fc750d50d82ebd21bdb62f56c985ad5f070644e87e21616692c822. 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/BRUM72300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0813fc1298c76557d63ad409bf7366af4bf7ac9930af1e9ab9fd664fce4f27. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRUM72202190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5147c20ab5ec25a2fa8922fe6cc3f061fbc2ffdf57ac37e4f06d630b779f6929. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRUM72301368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2985ec880fa6271a4ac31e480cceecc7ee6467a461087a38b91a4dd02ae96f4a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BRUM72201335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99012b8ec6b48fbf9653fd8bc5231fae4479007e6f793057f65292c3e4ebf678. 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/BRUM72302247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144664d65581a1be24442630d11b03447f2ca469dc60ee3b39c0f0f7f43147dc. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/BRUM72400358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b65694fcf3962b39e88ef206ce137c2615a6b75b966d8c57f5a3299a746d470. 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/BRUM72400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0813fc1298c76557d63ad409bf7366af4bf7ac9930af1e9ab9fd664fce4f27. 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/BRUM72202190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1983114e0fa9b80f083b87ea60652d79148501a25b6134919de2f4ab3a252d9. 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/BRUM72400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb546d4bbe3fc750d50d82ebd21bdb62f56c985ad5f070644e87e21616692c822. 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/BRUM72300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5147c20ab5ec25a2fa8922fe6cc3f061fbc2ffdf57ac37e4f06d630b779f6929. 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/BRUM72301368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xededaa68ccb2db50f234678620108adcd8c3a5f7c44d313f152aaec0dc949965. 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/BRUM72301715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99012b8ec6b48fbf9653fd8bc5231fae4479007e6f793057f65292c3e4ebf678. 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/BRUM72302247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532f9165112ead1b29c760aaf06b766dee171d669ecf410d237dcc986c7d11bb. 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/BRUM72400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79dd6b993e375285ced54351517083ab75f967699004e70c902a9ae8f2bf9f3. 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/BRUM72400353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32784f01804d373545d5db729459c7306c03df84b7d609bec4263c652e4a9e99. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/BRUM72400360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2985ec880fa6271a4ac31e480cceecc7ee6467a461087a38b91a4dd02ae96f4a. 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/BRUM72201335.