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 0xb3505e1dde33c3e41a3b2727ca9982ff86c52936b51de6cc48020e52ade54652. 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/8e65a0b8-cfb3-4722-8773-00de1c514e80.json and https://artists.proofprofile.net/proofs/artist/8e65a0b8-cfb3-4722-8773-00de1c514e80.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 0x9230540f9c704e19966d8673c8d6c84060e1f8bb0eec4bf698199e85b09f32f4. 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/QM7281553244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b6545f3669be17dca2b14d9d239174b504534f0f8544b71112d4d5c58cd15a. 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/QM7281553245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82766c83b5db6181cf5049d10da6b0c3e2d2332d49b2811fa90f8b84ae11af2. 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/QM7281553246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694d4db966640a6767102ee5a14a9589d464f9d181762c7c116adae921ab9f47. 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/QM7281553247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5795f2309f6c43a40cbfd88ad67ea6169a0ca6aea8538719c1edbbe4bfed88c9. 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/QM7281553248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd813cd339a302394b17f76539c118d73e81b2e624b0760d78ac58523e8e3dca7. 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/QM7281553249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684cb730f0bd798e9d23d361d8c30389d804cbdaf98b3cfa3633cbf3d565ba03. 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/QM7281553250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf9a19c8de199aaf7553ae7c3014081c440ae892b857a2c47ba810a95167d0c. 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/QM7281553251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4991e5023f3d851414606589de40107657a88c50ab4277da9736b4ed04572b4d. 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/QM7281553252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15715309f841628a1908565ae019266da2be8f5e49f28f73d5739a5254fa6a39. 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/QM7281553253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdb0118d5fecaae4d99d7c320fa335d7195d4b7077e399ebc56eaa1ede8675c. 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/QM7281553254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd892ed839c3e4ab339caafcc8473661065863a77bc3ccf720e2f014039b66307. 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/QM7281553255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6e87d9c68b529ac07c8a7ada7a7e972c19181cd3a2c79241e4692594fc5fdf. 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/QM7281553256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6125f216e4f7d3d80ca03bd684b50f65753467c2369a309be1dd14738b0ce4. 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/QM7281553257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e09c94c56cb8e5082ea8475d0450f1e1edc581c627325f96caa0a5c2f5d668f. 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/QM7281553258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b323e4cf454d2ae2cceb48174c1f129a4531340e15026adc69f5f933d19e6b. 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/QM7281553259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22293fa30105bd6917a562ed9eee944f69bfa1da85da5aba6f7361d982dcffa1. 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/QM7281553260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da6dcf4b381bf34ae50f01dab2d41009fc9790746203b38220132b8b02848a6. 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/QM7281553261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f425bc77482fcfb3cddbb7720b450369ed3aaee195daac79e9bb502d27d4a96. 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/QM7281553262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb4accbfae77c951d3a0bf90f22dd85e0612def8120a7faf61e893353493453. 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/QM7281553263.