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 0x29088715361e4c3b9983ee8f8d1c220e763cfbc72a7123d7701cbde0c1e7b4a0. 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/90454779-991c-43e6-89be-f1cd6bdcb1e4.json and https://artists.proofprofile.net/proofs/artist/90454779-991c-43e6-89be-f1cd6bdcb1e4.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 0xb420de66385af98430f3f53bf00bb79093f570ba773d48dcfcb3fba185850dc0. 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/QZK6N1940776.
Omae Wa Mou (Tiny Little Adiantum Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1139be1eefbe2cd927c29c4b01039abc78938e2ec24f2787b242fa0fe23479ba. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZDA82019021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f5d2e14fc91ddcf53c550ed86a9c2e7f58dfe394067ad5d90b0a2c419c7ff7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZHNB2097953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5ad89dfc564179a2cd9cfe922b3ab39164839b0a67ff5cbb5ed43f5aa1bb49. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QM42K2174329.
the indifferent cruelty of the universe meets the indomitable human spirit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87601939d118704a50b314bc05d0588405b64d41235a6e476151979b017a5f52. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNWU2216786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6594e589f8f2b790a7bc31f1920ea061ff9e1760d8bc6f0e67b5708e2b36122f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZS632236567.
it's been so hard to sleep these days...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5e0f6afe466bb02d2ad0384dda19717b3c924a2ce1f5163cfed8263cbd87b4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZPEW2451333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f456761324f6659712089a38a3bc8d66de065912e6a893b428177670d4120b8. 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/QT2VB2439874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373dc83c38f4856f8ada5367911de26fd88e0a9774314599b94ee0b1f9ffc01e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZMEN2161505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57a024500b8ed346168edb7c020ec69694cab49db39b81ec8cfa5877e2f4a35. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZVEM1830696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1139be1eefbe2cd927c29c4b01039abc78938e2ec24f2787b242fa0fe23479ba. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZDA82019021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d51664d0948511d75d30d8c5262cea09f05f94836d8ee9485b6ca10656e5d67. 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/QZPEW2517549.
to move forward i had to look back at the b-sides
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028fece5abde4c11a7b262021617e16bc38573adca0c81f6a712f7b50047c08e. 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/QZVEM2549147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35ba3e9e9ea214f4c14fff882ea3f7f7eab6de5133508a708488a41f0e08a57. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS652204826.