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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208a5ca154f0efe07bc84e8ece2af73dbb3b8e2f67daa7f36b618cb56952f94c. 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/fd0b5cfd-e155-4e7d-a761-c43a8e47d7d3.json and https://artists.proofprofile.net/proofs/artist/fd0b5cfd-e155-4e7d-a761-c43a8e47d7d3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dcccf95f4cf3f203c021216f76e56ed11d2f4122165da97c3c4591ecb27934. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GXBDS2425924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf038e1e4cb6463b4f490a289f7089a153bcf5d1d0b21ec7ec52f68e7fa71a7b4. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:12:27Z), 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/GXBDS2424688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb21f0c069a5ba473fd7d232cf65b8599d3a42b3f1a6f2c1c50d55a839ceb4e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:54:40Z), 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/GXBDS2498746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6278c81f05ade71531693d8b79c10656589fe9776c61b7ca9d4909fb4e4a3636. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GXBDS2442608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b64b883cba3f51349e2acba983976e8722b2415bc9a59b3e816add174ac772. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GXBDS2462892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e22505a6c56a9226a971e5ac25fd578991f18eb30caca7614669bfd7284d53. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:34:21Z), 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/GXBDS2429687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab44f73a5fc73a0122a47c7b8fa7f819b9b22257f2af3c19c07c634e3a781a0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:53Z), 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/GXBDS2496529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b44b4a31a81f0b87f18e3c364d1e1fdff518fb4772f875e999db1c81f929270. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:26Z), 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/GXBDS2550004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8582b5dc596a72826968d2b0c90a0f678f3fe92639ad202e0148bb9d6392f434. 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/QZVK62400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96c27fd8de5d4671c401a945790d1dd85e54d7063d951ba21beb807f58dfca7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZS642378308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4d596bfc0415ee4adc168b2a81f1278931f064a126781cc4510a71abe52999. 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/CA5KR2259395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82bf4b346dae4c04f98dc6edeef79726d295d271b298fd02f6952fbdb165a52. 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/QZKDK2227676.
Better Together, Vol. 5: TOGETHER EVER AFTER!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe21890c42065e75270927ee37edad2096275b86c8da4d707181f1464ac6d1b6. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QM42K2314251.
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 0xd44bcbb40ca477bf01ea48086314117832a0d1fef00038840ef21832ae5cf892. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZVK62300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e481d793a61cf4366433db70f1256f730ca2a00c5a33ec88fc57f4073e9a2e. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/CA5KR2499583.
master of disguise ! (despite everything)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3ca467899c0da095792c9d1f7fd988d273c06adb679782d29826e56572a21a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZS632242824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461bc796c088615766ea4b3dde5b5a292c8f059c48e287d259d904b500516cf6. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZMHN2409291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd2193f59d8aea686968c22307c509330097c3f32d69fa49c9aed6a9eecb477. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CA5KR2420257.