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 0x1ee2c81c801273490e35d2d8b65cdd99a16be8276dadafc3cab241a52f7f1526. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae6856dc-33f1-48c4-82a0-43399e434998.json and https://artists.proofprofile.net/proofs/artist/ae6856dc-33f1-48c4-82a0-43399e434998.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 0xd6f0a4f79f13b8c4d57dc119cabeb93fc7694e490ef3446b74c26079810914b5. 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/DEOV42200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c190903d67da6eef5a81deca2c6c32b065b682bf4acb049ebceadc32a3eb1d9. 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/DEOV42200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c3b8074635621e0ffd65992b8a57d78ae2e5f62092145afe1afc3468ae0ee7. 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/DEOV42200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15df0b651d4d484faa26b78c4a427b6f32107bec78146375eb34cb7f361bfafa. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEOV42200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4357ab76daa70f81a7a5f17778c8499544bbeb2c88566b523d15ff5a2471b8bf. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEOV42200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155886d24e2edb370571359435b4aed6c18df6d3f6da9135ea96068d8543660e. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEOV42200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dab8aa575de2e6c9ffa0af26b2279ef848d92d654365394d1ab84a8edbfdee7. 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/DEOV42001193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aca56da68f8773fe917ffbf4220575007e7531352eb90617f09113900846839. 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/DEOV42001194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c262855100a3aaf0e294bff8bb751af2f40503119ea74deea7bf8ee653610f6. 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/DEOV42001195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2873025560acc8c1bfdc553b5acea34b3385e7dbae826fa8a02355d820922ae7. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEOV42001191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e87825381a2b963921ebccd10e426d4e09d767a89d9bab94fa2002d900d870b. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEOV42001192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12da857860000a8eb338d81d6bbe109d8cf039195726075d3f05314f8adf2c75. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEOV42001196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf254b5716efe90724326cb1ecaa485defb1f65bf85fb01377090e1dbcbec7c1. 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/QZCE61876110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d2fa28161a1b532eb6f1daa3c4893b2849fa786104d4c3bec7f974727ccee4. 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/QZCE61876111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeeffd45d3b8a99572f8827682e9c1a6c2a86b493aa26c91aed640caa895e933. 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/QZCE61876112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dac9e2575536e4ce974c92cc0b58355b3f68ec790450093c8e89507a549ecb. 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/QZCE61876113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987bf29c04ecf6fe8e53ee3e397d9af053a6777505670c6ea6604e1d6fb11d06. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZCE61876114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588c2c4987f9dabdfa9243f17eb20ed9f1f2dd7a3c19d3ac8a015dc849a92cc7. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZCE61876115.