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 0xdb96dc8f5fe4c595f917e12d4c70174aee818afb9a23f8d29559aa362ff7c726. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00fb1e4d-77ef-4207-98fa-f95fecfbff69.json and https://artists.proofprofile.net/proofs/artist/00fb1e4d-77ef-4207-98fa-f95fecfbff69.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 0xb836e912cbc7c0276a370d84400d3efbb5536d41ca0029b5a7ba02982b725ab2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFZ62393672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224db1ff7c875db6679ab2e14d035690189aefc37124391fc0738b90e79dc03d. 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/QZDA52397298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17092336431ce188236c19d9b87633a66714033416f4fa310f953206c8df80e4. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZES82330867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c28d7fc796ca4d789075c9ce236edb839e1dae0cf4312a837f1d4b8c6b70ec. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6N2355475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3245b3dccde96dc33485c4f0add6959ab23d093bd45d7d1ae68c30c50365c9. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:47Z), 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/SE6XY2371279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe331401c637d7ed8ee6c90eb09b6e05df971f45e2f772993ad8f5cd13cfe4a99. 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/US3DF2417078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8082995107275cae25cf7559a6df197e31c8946599de860f6c13b7f4bb3bf038. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZPJ32350565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347ac0638fe7eeaaaa3bd8da926dfc6ed4896527ca1e4070996f9fe008cc3b53. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE5752484327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37130fd174ec73032dfe49d0d0d738380e7127827152c2484d9fded00ba64bfb. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/USANG2414636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e609bf36f16633831ac623db1b1495262fb0e1978d41974b2a4d99899614b53. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6QE2433078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33a401d6e50f1129e2e7b97192f87a010c6b27a089f6721a8d3a37cf953e992. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USANG2436149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336dbebc8e238adb8cd9f84070acfe4eb9caa4f9c631aeda354387a769a1965c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE6SA2426265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ac02b6870ef6d559203f823742d9903dd5151dd525e235025bcada9973ce88. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UKZGC2410258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d64fd6bbce542c86134f0df01a0d182c482e1b9352bdb7b3bc9d10aae85553. 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/QZAKB2443171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e67c1e4c777ee0c803195a2a78b6b9fbefbae2302a545d872b7c2fe6e23428. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZAKB2444773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e67c1e4c777ee0c803195a2a78b6b9fbefbae2302a545d872b7c2fe6e23428. 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/QZAKB2444773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba66b41cdc75b8f68f623be9ac9170b1f6bb5f7ce9010f2c7d3237a8c507371. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZAKB2452950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41a522cef68a7767a880083674068f0495b6d506170b2e50558987d181f3de5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKZGC2501061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98190fbdc03a3ba2880758b2b3a82457e57cbb7597339124a24185124776134b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE6XY2595151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e0a9386572b304df1b27ca2ca590ceae87d1da5fd81215fa00c7911676e7dd. 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/SE6SA2565752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608891ad2e2103ec2a8a88a3c80f8c7498b1382b557de16fc76aee986eced36c. 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/QMANG2423645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd055412008fca96996426e6b01ebda3ab469447b87f5c59ecc7d30d7607a53a. 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/USANG2481755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41a522cef68a7767a880083674068f0495b6d506170b2e50558987d181f3de5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKZGC2501061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfab8788c42772fb1c0e631e94e8854648cd80128bf8f88c9f7a5e0b6148e2b3. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZPJ32343576.