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 0x9c7ebf936868be25434a6f92bc1a4c6ee71a631fa5c96ec170b6539beb155b94. 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/ba6e6342-93c8-492b-b5b6-d8142382dbce.json and https://artists.proofprofile.net/proofs/artist/ba6e6342-93c8-492b-b5b6-d8142382dbce.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 0x871692931ebd7abf15bd4d9458827ebac771f0bba7190437010497b5ffa0d483. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/FIVAG2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a6a9d9b7b2272321e4195becd3fd974e782a69d5bc340f11944e7ebae4c479. 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/FIVAG2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc123d8e23893482916c9dedd22e755d73a403bf6c641a3b056f0d1ea02869db3. 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/FIVAG2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df4aca4d917ec48837950450663fb265a1d1a0778f6f197c38b07b2844cbd3a. 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/FIVAG2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b2eefc43a308d7732d5e29ca5cf3212e49a7913606224552d6261f41ddb46e. 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/FIVAG2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67567d7c46a6e0223b89d2e9e4ac8166b3fe3e3d6868b140c51b49f5c292d796. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIVAG2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e9b904cb14d63ecb6496533bbb9f1ce7300f647ce89a9a35d092306ae5d3a5. 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/FIVAG2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405b720465dfd21aef86322d632ffc7e1ef320a85eedbfa444fe68d022848c01. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIVAG2100001.
The Prophecies Will Unfold (Orchestral Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4719f125a20a0bd84eaf761b20c1de8aaf4e0f317b87af21fdedcd4416cdfb1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FIVAG2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4fdb371aa0da1ac601399c1473f4e09dbcfa9d9b8d59519004f0c7a1231b4a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FIVAG1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4443e0ac962f6283fe5a9ce6a82e31e0c2f59fbcbfba99173838dcb1d7eb9ef9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FIVAG1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115afe2361af4210dbe86bd358626df58439eb67654201704005ca262856c16b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FIVAG1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88693176d1e0877aaae2dcb4f6ce86f01fcf391c70b02d95148985868860671. 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/FIVAG1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856bb822f56724961832ecc531d75caa3ea70fb785364054681ee8ea59d4b750. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIVAG1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3106734c6cef83f503a31705755b410539dffe7e82b968fe5626193bbb9370f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIVAG1800003.