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 0x36e3581c71f66e9b6382fe19e16e57bffadd8fc361605ae08f511b9bce8797a8. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a154220-1fdf-4394-a580-84ba10399350.json and https://artists.proofprofile.net/proofs/artist/8a154220-1fdf-4394-a580-84ba10399350.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 0xaa35c3fd010142bc9ff145e4050ca708912a3d54125968e76fbfa0a70efb2b51. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBMA22495523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe061382a114753bbee4441d7623aa643c2dfe319a378809dd61628e11692b387. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBMA22495524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a6f64b5da507bbc48529a2a172118d35643574c1ec5715263cd49efda79210. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBMA22495525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ba51287c3a9aedb3d68e744d6d75bef992e6b01f8e75c4e18d664e6950cddd. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GBMA22495526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc2e0380b591738120c1b9c0955d2076dc22aa3726f5eabf55c9092c895a324. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBMA22495527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33911e21ee31e3f369b0c339eb7a5056e5048c219e43f22322390793bdcc559. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBMA22495528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed4a0b669fc4546cda7eca1af47f4c0adb60c19d3a6f8e631a3be1c1af0f8be. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GBMA22495529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a0682b4ec214aed494620141fe0e7c8667936b9a55a24503da7f0436bd4f5c. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBMA22495530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69579abc874e5edcc0f181d910a8347bf463d44558e6921dee4838ba31c2b143. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBMA22495532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95672de64be21a2df1e9ebe0b80761325275a5c14deed527de06450a7ced8674. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GBMA22495533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687023d0a1d4bfea8f31ed50fa7893595337a9756543647cc6134ad71e8b16f7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBMA22495534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cbc74f7a269371a37ab07e43cd74c3866da7a014469bd5906d3b6d6fcf318a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBMA22495535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7392e387bfd8140dcf667248a4758d440d95bcc92e6b01eeb67463ba7fa5d4af. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBMA22495536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b1c20db072bcc866d7780b8267bde0c0ddd64819156943bcba44263bf08d0c. 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/GBMA22495537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1501fac75c1e989e74cb7e65b96b777d67d41d5a443e0c254e52bbfb67ba522. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GBMA22495538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb28b99f6311a6465a95d169fc9c1fb29b6fdafde64094cdaf9364009478eb5. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GBMA22495539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4361eebf5364f2b28786a76c459ff632fa55a5b6f32f25360d842f91b22b3981. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBMA22495540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cf4dac2c4fc2463fa1176aacb9135bae8620c1bacd062191d89908bd6d17be. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/GBMA22495541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d65fd055e35848cdcd5daeda4b1e181e6d2c49a618f19a6e73a44b6fee6daa. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:27Z), 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/GBMA22495542.