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 0x6032c783e2f3070a90618d6d297ef8337bac5202009f94e42b46d5497755d1f2. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bcfef79-d6f8-4c35-ba9e-ba12e59880ca.json and https://artists.proofprofile.net/proofs/artist/9bcfef79-d6f8-4c35-ba9e-ba12e59880ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You Have Broken the Chains (Live from Nepal)
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 0xf4aaff41d44e6a5de6064e52cbc2309a32a8c821b1c00400491e8170983c77e4. 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/QMFMG1555955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412bb868e9a0f432ac536d4c0d91c8b2a3ba225f5d48a246251f84afc8021736. 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/QMFMG1558651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280ab4bbd2804418dd5deb7f099680c4d0ab476a886f94f10d47cd7e8197f44a. 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/QMFMG1558652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8406a5a3dd88b613603fd0531497aa68c227cdc7a740a08b6a894a1417e579. 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/QMFMG1558653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28f4bb78b3a120fd781e28d73adb5c49227cdd700ab60274d6cd99753f0d922. 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/QMFMG1558654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6491b05ff58fd6dff82d483c1cc387529f44659643d19b2d46e1b1d3452a8c. 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/QMFMG1558655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa44d60588bac3b555ec27ea65c0a39a28905c60525171f67fcb9e2c7f9d585. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QMFMG1558656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689834d109ac16eeed2810a39a27b620c321f342037b00da1251e10dbcd6d195. 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/QMFMG1558657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adc476c58bdeb2a6a63d9c045ce2d8cf1929c05ca55f9943d9ed3ea6a840ff1. 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/QMFMG1558658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53846cc40723797b9b6562df57de61813c7486409ab863d2a62091ab6cf8c79. 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/QMFMG1558659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xface569209af2788ef479df14ce718c735eb1887f226eb1255d548fbfdc867c0. 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/QMFMG1558660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a193fa589e9ff73424dfb77db325a8b153e7be6dbfc9045b9493c9252af1fc. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QMFMG1558661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61ba6d3476c2fcfcf348dbb2d12852d5d905cdbdc73ad9fc3bce6a6b2d77524. 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/QMFMG1558662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb902df95414879e4a70160681819596d1d3ad4725aad7fabfd54b4c0c03f8a7e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QMFMG1558663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea80f5a3077dff6676af5111c9d5d8539d43f010ec6354a8ffb31bfa69c82bf. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QMFMG1558664.