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 0x16f69c745bd29b280ad9cc5af373f653d58caba9cdaba086d0697c8947aadce6. 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/8e314ce4-90c6-4ade-bb3b-c9bf563de78e.json and https://artists.proofprofile.net/proofs/artist/8e314ce4-90c6-4ade-bb3b-c9bf563de78e.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 0xfad0c3982650d9616bc1a712cd91cb727f51f0cd0b86380fe6c2bef170dd2d52. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:05:57Z), 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/SE5ZV1800315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3491ca5554c948b5e79e8e0725b06dc4174859409eb414681cc539f3e22fbe98. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE5ZV1801511.
About B. (Memory Sketches B-Sides Recordings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4465cbbb9a2c1bb4d21f803902531ff5ed185e3406181fcd2066ae72bbefce03. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:36:26Z), 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/TCAEW2087992.
Dad In Prague (A Sudden Perspective In The Evening Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7638e4bc0955e5f080c0996b94b596159c32f9555093c354d4b31a6dcc4ec03c. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/SE5ZV2111918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80328802bf43319a03cf061524512fe5a3316e91f50e0b982c741c5e96623ffa. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5ZV2208401.
Talisman, Pt. III (Flowers Over Your Body)
Banquet For A Boy From The Neighbourhood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80aa8a6ef21c3959a580321e07e468d66447e4bf0df36665124abb984ec3630. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GBWMY2252020.
Banquet for A Boy from the Neighbourhood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80aa8a6ef21c3959a580321e07e468d66447e4bf0df36665124abb984ec3630. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBWMY2252020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df3933b7279c4a675de64bb34987d39389da4de3238537f810153d4df87c00b. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/SE5ZV2312301.
Me In Your Rear-View Mirror (Memory Sketches B-Sides)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b8f83957955d8976ebbb26c800306beb2ff2c0954cd4821c8df6a9718cdabe. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T16:00:28Z), 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/GBWMY2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b5ba3788819957d2adb593bb55d027c6e7aabc4b26ca69e240fd7262bbbb5b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE5ZV2460301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17707c09be629cd1754f15b99c7d53cf66b75dc0b1112f5b0d5d3bd3b259fd3b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:50:42Z), 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/SE5ZV2415301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a7448ded2a3f12641cb5dc0a529d2ab65aca6d3dfe087e170ace7720ebb287. 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/GBWMY2500320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59fa98b8ff4a6c5ea9f335bc24c53414c5153b013d0eeeaecaced4488f42a8e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/GBWMY2500420.