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 0x37ad04f7c9ca1e74b4d4c4080fefdade602bdf98b5900456aa1d321cf32b4390. 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/6b3aa375-4e81-47d3-be7c-3063837c1fb4.json and https://artists.proofprofile.net/proofs/artist/6b3aa375-4e81-47d3-be7c-3063837c1fb4.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 0x716538f96e6029bef911c235a0a3580cfde09fc1517e1a7786abc3dced30b2bc. 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/FR10S1946278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3c10429f25763dcc46225dfde753d473c6ede9718936db99f7c06796ba7d83. 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/FR10S1946279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3189a479253ac2092e9a3c0039563ca171eb6b0818e2d90af89c723576583935. 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/FR10S1946280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7240595cf10cb088a22c58dda2c5049fcd0637df9be1c5025d595740a263fff. 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/FR10S1946281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90dc81c944ac14d41f5b62b504a5a670761374ea76bee6ef15e4ed5c55d1cd0. 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/FR10S1946282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a69981d727721e4e71b947699b34d90e497fc8f45fc1562464768fe096b0bc. 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/FR10S1946283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaeb4f8425673b80f91bc66eb98898c522c74aee2b66be1ae582cfee2d8ed8d. 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/FR2X41737667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41d13ecda1f8486e30a2f6bb8b73603449431b1f48da44d7340d986e86dea67. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:51:32Z), 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/FR2X41737668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64724c634652e964b24735649fbc6ae5dddef7df38abc9f57b32d26f816dd048. 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/FR2X41737671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3729e1aaaee523611afb14e2152a0f2733c2a3704c39ee72e67cadd2d0549d6. 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/FR2X41737673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0f86f9e0115fdb35167d74ad1130c2a21de63397735485bf6d974ffb25e898. 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/BGA261370803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ad2757cd1749950614cf297bd6a20d8519e796003e2373cc51e6b5cdb4fb88. 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/BGA261370808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd029558c7657a4ec46d59d26f54a682ec734a5591cc852d8ab540541c1e7d86b. 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/BGA261370810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd2333ccb8a54a4ee3f3f1e1c233b464d6795612ec35ac311858124aae12849. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR10S1485048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb3f130c86ed1b3cca83289692b9a987ce9ceccb1ba1be47d8130a41f2370d8. 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/FR10S1485049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dc7ae58c970344f025bdfde6fb4525d8784b46f6909ed0305b4e8f4b5f0dc2. 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/FR10S1485050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dce88538ff16c1f06222277c8b79063ed7fe7563228340c5fae110556c74db7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR10S1485051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3079f5207127ab73a9f9c2e8b3fa37a3447c4f1131058a2891f28e237aacda3b. 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/FR10S1485052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76336b962792aaec802672955980f9389176e71178a475a86352d57d286bb82c. 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/FR10S1485053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45ac21e4fb5161d5462247f085f3eb7a4774aea0210c16ff2ad2d5d5ebf0f6c. 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/FR10S1485054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3c3bdec830bbfc5e4f1d7ed85dcb0a265fb2980ff3dd58e4d6a7c51a0dc668. 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/FR10S1485055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edfe68fd11e575a36b38f69a0d430a4e6b17daa11863f03a802ae4caaa927b4. 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/FR10S1485056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc498cfc61b519c234424471127a2c9790b59c4c47917f99a2c899fa3f831c6c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZDA52060235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515d131d0aa775b8a63d1eabf5af5365b09a075644eacec251ef57028d2689d3. 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/QZDA52060237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815d47e1de2083fc57dcd9e9dfd6535802cc377267ffea5da9ac58940231a1e4. 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/QZK6H2220201.
Monkey to Millionaire Shoebox Sessions - EP