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 0x1fceaa168cc19138c92fffd4075245938b6d9db7e2075bc9476c8ce5f2e339d2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e036ad6a-f59a-45ec-86da-4f064fdd23de.json and https://artists.proofprofile.net/proofs/artist/e036ad6a-f59a-45ec-86da-4f064fdd23de.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 0xc10b826df1edd4a27868a0844cd11de3fdb0edda029adc72d4629a7229a27686. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTV32226090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56030597ceba61bb4b4a8ffccc533e2ddb3ff2fb388038418c03ec93b180c8fb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:11Z), 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/QZTV32226098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23a7cba44bf744f01bb287e9bea71369fdeeaebfaa20e13e28c6a6010896bd5. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZTV32226103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48339dc727e94ed8b3c83b1336d3b45d0094e0927fc55fd12ee9215d989f48a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBRKQ2040606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2170411dba01efb2e0aaad8c8ca719b35afb31ad2263eeab0672ea60e4b610b1. 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/GBRKQ2040607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca433300d46115b02648cc72c193f860c327121b17df4661efe7882c9752fc16. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBRKQ2040608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7269ed699fd307d68c04d7166c13ec1af27f494d530e3207faf8a621fae1df8. 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/GBRKQ2040610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae70c2e3d52f62a7203d332a9b3cffc1c71241a46258864bb1114285edfea02a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBRKQ2040611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4169394f847429b0c907e36533e4e10eb807d8e31d6ddbb9874a40de525ee82c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:32:32Z), 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/FRX762115747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee0e95d163cf664d22f53764d47d2e23a286e62943a2ccf5f59be320578b0e8. 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/FRX762115748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba19337c38c502b65f748f1208cb524f1177a1e129db710a2727761cd2391ad8. 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/FRX762115752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1501cee838e0a5bd3f54989f3540640879ee233529dfb8ad6879ba172664ca4c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:25Z), 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/FRX872174717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4e5a35681f69a520bb6b331d89d5b6ea1c8e18f0bc905d16ab68e58b0f3f2c. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:50:26Z), 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/FRS182135767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefeef7cc91d08cb125767334146278d08c79098fb003ecc81bb229019778876. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZNFJ2306695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57133a58c18120b7337372ea302405be6d01deabaf8d9aa5e4f140e22192ff1c. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:17Z), 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/QZNFJ2306926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace6c50214311046c2c0e4f0ef3d8ba4ab98d2ea7621059c2ae84a9916021e69. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:08:03Z), 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/QZNFJ2400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee990de47e1ed6eef68eff98553f88e6826d3c4eab2bdcc0d895102b1e4ebc3. 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/QZNFJ2403610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee990de47e1ed6eef68eff98553f88e6826d3c4eab2bdcc0d895102b1e4ebc3. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZNFJ2403610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cfde13ac0f4ff292c7ee38d36c84ced21492963847a791a8004c3e20192251. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:47Z), 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/DGA0T2434976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6edfed1851baafb0732ecc8ee5a66e185aab8d5f9d2e4b2ed8f85d4b6db854. 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/FRX202516962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33407d6b27167b4d000125a746e891866da7017a7f388ae1309c2c7fe766fa9. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:39:27Z), 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/QZWDW2548279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437a26f480900377b0028b77aedbfd9682c6def3a058b5afc3ed8151ee773f87. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:23:58Z), 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/QZWDW2588821.