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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477628fe953a0c74efad3f690f2af9942346130392af3d6bd832fc35e1f14396. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfbbe440-35da-4aed-9454-3b07650b01b8.json and https://artists.proofprofile.net/proofs/artist/bfbbe440-35da-4aed-9454-3b07650b01b8.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d5eade9f9ee29a62b20caf6d98a6ecc44799ced0570fc2f80ad9909968cf14. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPW462422718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77808bbaa57d3bf40fb4607c741da145a9f839922b75aaaf6e1ec4c693b781d3. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPW462422719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5cb5e44d18e3af7ccc838f7dc51f87d76f629ab12cfe91c6bda2f52d156e30. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPW462422720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98aad2f40cab28f70f333ad0bb3d3c7e5d6e4a1b8cfdc355e97355972a38cd6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPW462422721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b3cda72ded6d7a7b9ffe856abe79f5acd72a43aa63f9bed94130d6c12bf1b0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPW462422722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82787e374f5099e1703f0bf0bcc48f022137d65ef51d76a450fdf1083e600eaf. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/JPW462422723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89705f29c8dd57d15cd552d28c1dfb8081bb1989e71fa5f004c4d5c8b17203d6. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPW462422724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5409778869a009fe634907d08acdceb9419fe1e9d6a2c71a61f5bc64d1669fae. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/JPW462422725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe6872af85adbce3ba358f8383c79d17e435ad888d11a613bb546c506b7b472. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPW462422726.
The view from your room (Instrumental. Ver)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1feda0bd435b34329e7bba5d46937443f2dfe3275410fc044eb5e3e155f917b3. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPW462422727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b82b8642f04dd25ab7960dcd2ac5a1ad0a2e927cd9b8480789ac2e4a3974f8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPW462426528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a06f8a245a2eb8a9325433b323740deb5accbf6c2d0d890cde070dab7fdd28. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPW462426529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952292530a925e955d8d3d0b22dfed84a6d308dd00aafef62c2cd4d06bcd2afb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPW462426530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac02d91c3ffd63a68afbd6380da0e6d94a120822e75e693388d5b31054bf1c9e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPW462426531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc04df7fbfc31d8fa2c82d16ffadf472853b97f8f6e40c2890e31a72f82153c. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPW462426532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3b34f2afd4231d3bf5cd75e1038ddfa3b391d1bcf072387128147ce7559ee8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPW462426533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abb32f05cb557d0620119d214ed51fd1ab556b2d642c3bcdef4db4b8ccc19e0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPW462426534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd015dbf975a00bab0ceb3b5b3677a584a8ee37df6b7cb1257c99d8a2f23388da. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/JPW462426535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4783615f6de1929218862b25eeae88348b4c852876da558dfa78acecf555c659. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPW462426536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c15efad9ee3684dd58943509a12226410279859274f5d4d386e5d30b029816. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPW462426537.