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 0x98e4859fd158d9ade4af54caa78335671f0886b4d70fdf6da731213322cf3977. 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/0fed498c-da0d-4ea8-a4fb-db57bcb5009a.json and https://artists.proofprofile.net/proofs/artist/0fed498c-da0d-4ea8-a4fb-db57bcb5009a.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 0x31031256e7ce132d552d8584dddada76b652aa5cd461906d8e47e705a9496c90. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNWU2325843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a2afc1316f8aef54f92d0aab7c3323fe80b295d091499181ba52eef147d0f1. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZTB22321630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe700d395550dddffab30943dc03f32b4aa869c4cd2d130819ef396d47a1f2f46. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTV32444659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd145fb9cf84859d0a9d5daf47ec52c01ef8dd0d1effaf3110134e10538609a0d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWDE2401480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59d5793f098ce5c7ae4966a7ad2a2510f124d810faed2a60c20300b39f2ead5. 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/QZWDE2401490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4f00513ab12f5eb3475183a07953eab5bd1d8c6aefad9d0fe40f66566c7ec2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWDE2496354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb8bbf9d60c66c7716648b26de499bc0d3222ba6b93cec5b74e9629e22d303f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDE2496389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dcacab956e87454f39e507f841a4e340427fa23a541c45bcc4a0e638ca1c2b. 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/QZWV32483431.
Something Strange (Theme Song of Freeze Frame Podcast)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f102d2606bfd56dd358c9e8787ff8663fd62129c4050cb5a50765e60c4e381c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ8A2461172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da91eb49b68c544fd973d5127486adfc8927d0a56e2812908175fd8be29cbad. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZZEB2493274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e4d1b129c1cb89ea3eb6ccf55cbbeb4e815786a6b7b3134c6c1ba430aef775. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBRKQ2595067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7376f58161003bb8361e94a5813981e111074594a988dc4f2d1835425a95e9. 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/QZTRX2528520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2a0020817fe8c0992d60d71406e6dfd5a04b51e04b8150778de67480f05372. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZWV32571515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620ac23ef69a66124bcca429b244abc76f3efd75b0ea463db052b3620fd15413. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZNWT2361583.
Indie Christmas 2024 (alexrainbirdmusic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6a3eace320e96f9b88ee227d665001ea7feef779f74059b62b37727af5c4d7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZZ8A2474483.