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 0x69cb231107454f1658a8d2415e456819d35daa44a0518332648083a0355210dd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47f568e1-8e59-43c2-9ad3-19307f42577d.json and https://artists.proofprofile.net/proofs/artist/47f568e1-8e59-43c2-9ad3-19307f42577d.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 0xcb99befe3d08b0fb0eb6409068f659fb5f36f4cdd8128df3a50c36a774818b98. 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/ES0952100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae237ce9d9178a970badee34b4747abf76f068d1043cccb6d0a21ddfcf428f4a. 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/ES09S2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d2132523bcc074d2084a359d708d36d5df2c2705124fa0d5e6187d41226c38. 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/ES09S2100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9febdb3cdf0083c8f56c8de061545463d2a5f69df866b143b98a087954029609. 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/ES09S2100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd817f604c4f6ce2432b9e6aa009b6d74bff4f77857b7b967cc12ed9e740df214. 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/ES09S2000424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ea186a945c4120e0107a1dad18c42130708a60d2d75ec868f5a74a3ae62916. 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/ES09S2100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe381064225c6dad201190a86940b025e0687eceb656fd7e2c00afadc2aadf28b. 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/ES09S2100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513f2f15f49622f99c004256d5dc90b786090c2cdc8e1a08f2c84d5734f706f9. 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/ES09S2100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8098ea9013191d1d65217746a3f3e741b273741a1f6a747c5b9c2735b842d3eb. 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/ES09S2100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70ae4cafcb4362a6f99f4b5dc7da0fadfe43ef8e74de414b922e7ee7d5304bd. 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/ES09S2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfab50038c586fada41461852cd6e5623aea81301aa37cd84e9c7605a9207986. 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/ES09S2000452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dbf8c482e7754f55413c7ea8845f6298fe013b43046a8521416739967f8d4a. 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/ES09S2100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd968b8514323152f1e8e68da6bed22f8903685d489482c9c32e237024680878e. 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/ES09S2100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0bbe350f5796b9505785b339091a3a457977442fc283a96a5ce240db4c5250. 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/ES5022302603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf027bb0673fcf061ccd2f50c0e05d18d7496cda18ae70889bcfb09f1d7e33d. 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/ES5022300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd818714097005fd75f132a6a7db5cfa9bb67bdebbf660b2f5a176768d7c9cc19. 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/ES5022300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd692acfb1a5849ac791fa4313a5053e5b51f488ed6607c8125ba6933a5a2ad6. 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/ES5022202757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0863ae860754b8d7d9d0ad938185df832d682e682585512b8fd46e614b0b6d6f. 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/QM6N22292815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c9b525130e79bbcf0c4a98fa3625df522b16aeeccf6c389c12908ed13aa6c9. 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/QM6N22292816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc23e5e4a09cd839fae4331b6f17378b0b5a7f8426d98567ba72fc3744797b9. 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/QM6N22292817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfa1520a91d0b04b6dc5a4c8a7e73db7982fe8e0358a45a84afa50ce0da0da3. 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/QZDA52042379.