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 0x557efd7630c44085453187b5e056873e01d0028c6dd9acff5000193bb997307d. 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/03fb75a4-218f-4557-b52c-9cc6b713c820.json and https://artists.proofprofile.net/proofs/artist/03fb75a4-218f-4557-b52c-9cc6b713c820.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You Know What They Do to Guys Like Us in Prison?
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 0xd6c2e3505adbb9c62b2570bca924badcd5c11cd8fff8ab64a22b9a76489b47a7. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QMMUK1800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182cc7cb42e9e37e969a9a3e3ae0184fed5b699e1e7b3dad1e662f86e0cc5634. 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/QMMUK1900328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874936041c550dff54aaaa9f24fef2ff09cf2a26291b71d3e1bddd990e565fcf. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/QMMUK1900235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0562f2c7b109bbaaf7d7833c2115ae033452d0141b3521095f07aae5b4fffa21. 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/QMMUK1900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9cfaadc149828acf5cd88cd77dec17d5d42d6157c0893adcd65ba4977e680d. 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/QMMUK1900238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee7160f639c5c8caa29049279cf5b632643710ca9a91711ead29195038f81f3. 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/QMMUK1900239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86f9f10059533865af00c5f66b5090b7f926a440e105e81ac3cf0623d79d397. 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/QMMUK1900240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d930e9a90b1d99f04ae764508d277f17aa1bdd49c28958f25e3ec5d44251e8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QMMUK1900241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3aea5aa9697bacca07d26e555940f60255ee2a8fd55e79a342f351edbf159e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QMMUK1900331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa6bf54f6881082c20f3464f1e477998dbb2c930fbcc6f651b69050bbbfcd62. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QM6MZ2185398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45ce43c1cb68b5f930b402f1ce5b0098751fbe95c39539d97532527bb8209c0. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QM4TX2220202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029b1b55ca8a7da14a54c5451c9d954d9212a7c35ec8674059ac7b275050d7d8. 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/QM6MZ2252835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd877f5f2d73b26c1a1f707b085ba7bb725e60829b58c6f9ef9f2f8ae5937623e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMBZ92445138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ce28284d74acfe68dcef11ee3c4d9245fe4ed4a734d50cb409fb567b04456c. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QMBZ92445022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd877f5f2d73b26c1a1f707b085ba7bb725e60829b58c6f9ef9f2f8ae5937623e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMBZ92445138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ce28284d74acfe68dcef11ee3c4d9245fe4ed4a734d50cb409fb567b04456c. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-15T21:33:28Z), 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/QMBZ92445022.
Three Cheers for Sweet Revenge: An Encore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c2e3505adbb9c62b2570bca924badcd5c11cd8fff8ab64a22b9a76489b47a7. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QMMUK1800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e0d8b6506395d2046a8663284ef353625863dce3e52d2ea32eba8a048b10de. 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/QMDA62118691.