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 0xe9329bd5a8876c1a3d7e9236380c251db2416c8b779320923fcb582ef8d38dee. 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/822bdee8-a635-4f7c-9d94-7af766726470.json and https://artists.proofprofile.net/proofs/artist/822bdee8-a635-4f7c-9d94-7af766726470.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 0x33b1d86d9fbf861122c06bf8ccf04444bb81880755e63fe5495a9e534a133061. 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/QZMHP2044164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b2dace01168442749bae5073e01f95a2342f0ac9a372c1a184aef137822e8b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHNA2132037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd8e604919d516afdb6c9fadf41372b38c671576c4d3cb46e2bf14a162e2a98. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZTAT2191373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a03b0827114fee7c06741bd33dcee6a59fcb1e59b53b9b18303414b7368158. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZPLR2186504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f72344061ac65753171c1e0ab9b31ae2b02d0e92ced57787aa4fb552957969. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZK6H2105025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10149ab4432fd944b60a4e3941777d0d2faed582b4b5a06d0c9828c7d22175e3. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/QZHN82291476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed1aa8616865dd2e02f58b7863379807c9c5c614df12ba0b06068bbe9d7b5d5. 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/QZHN82291477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f72344061ac65753171c1e0ab9b31ae2b02d0e92ced57787aa4fb552957969. 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/QZK6H2105025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67841a7b386934cc3e82744271a4d42d348672afb27c8da69aa565490134ce6. 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/QZES62244006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a03b0827114fee7c06741bd33dcee6a59fcb1e59b53b9b18303414b7368158. 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/QZPLR2186504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b253e4411628d76d4a6855b96ff21479d36d75fbb8e833157f137b7b4b43fb7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN82291478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee76f7de9e01bbe6065c548cfefd93233643f9ae330c438309b4ba76183ab58. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6J2295628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fab29da9aba368af5d788683c816f199c74e3707256d786cb5ab6fbf8f8e71. 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/QZMEM2242046.
The Mess I Made (from "Another Crab's Treasure")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1e796a4163870767526066e00d0e7f21436653d71fc7ce294bd6c01e160e4c. 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/QZVK62300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ea8a4fc47a1094e25ce52a98bc3aa487f96eb43746a12ab2fad0918e448566. 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/QZHZD2069500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87806423df81e3259a3e67d5ddc49e97621273aca6ce5bd2a3cd8c932d4345a9. 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/QZVK62200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be8ef2641ff1a65ba439005e7dc474b849617ada05d183e08166203c85fef48. 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/QZN882205178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93cb770f767fea5e176e78f0694ea1d53dbd42fc79a41893a243bfcbbb57a18. 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/QM4CD1800041.