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 0x8a984fbe777e30bbf4244f8899b3bcf4f3a8adbd3a0b60f4c7731eaa7a02d368. 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/27f8e20e-a22c-4415-b9e7-d07d4c47c747.json and https://artists.proofprofile.net/proofs/artist/27f8e20e-a22c-4415-b9e7-d07d4c47c747.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 0x06dbcd48c3ca3ea7ca0b6ef0432696bb89f92c19990398bd72cda55be4492a8b. 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/DEBL60817240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd6c214ded125f0995a90edb1c2fd1b298c2e9a2d473e42e61abc32ecfcfe26. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEBL60817243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b2963504173a69b32b162e849419245dc0825621efaa51f99744bb2c6dda1b. 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/FR6V82657604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b45467338a27612a2ee919a333402151883ac81f3d5bc00dd2090421059bb4. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FR2X41422073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89afb6586d7037937b27d53922d8ffbb4a79165c2c74ab40da50d5edfb32c045. 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/FR2X41422075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d38bee543b0b41a87a41d3fd42c2d8e8938442a62908cc3d5a25985364d4e5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR2X41423311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc1a4a59465ad3d8550252be2596b6660ca126927dff4d9e0691769c6fae062. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/FR2X41422078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3a4ba16c06f46a98d02f0ad3b8a80c12dd7a7e687bfb59f74a30474fe89ec5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:44:23Z), 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/FRUM71800529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52420f72aad14007dc86192d71e4b413112a7d6f2ea6a2528913cf23716e2f63. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FRUM71801552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fc8e00615e948508c3f5a5ed518066e140bb41beb39757cdedb86f4690f9f8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRUM71801633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b73e3dba9721def72d9baa51377b8884f56563f6eca7b71470d840182c63398. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRUM71801634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88b854c9cc79663e49650d89ca12897eff366530c30b649a69c099713ce6291. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/FRUM71800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c33618137bf5a6695f5a78dc8add7661eec0d83c8595ae3bd237221fb472e82. 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/FRUM71801642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a8c3934b48df3dd6190d1fe10cfdd1d78d1bc622557c7cb9ed0f9972323a00. 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/CIUM72300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0518ba64206b28928a1f25173dfac9bfb093526ae9ec54fb6159a384d43115ca. 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/CIUM72200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818e9db0431abfe44fe07da5967c93d044baeb5bdea68b9b233b55586af6e9eb. 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/FRD6R2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd9137804c79c41552346fc6aac56e6fd1ad51cf50ed89ab0a277c99342a26f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRD6R2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6209c7ccfe8d2b525618cbc168433400850246ca1fde80a34565fc256e08d0e. 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/FRD6R2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fda5e59ae0402a06b4bd5bfe8573e1d7e16944485aed9931813dfe182724733. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRD6R2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73553a6de61ef732a05d6aecca1e18747bb6a40f7066e14ee67df98da668edf8. 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/FRD6R2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973217dd97bcc122845fade245431d2a0007126af2edf06bf15135b031ce2b09. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRD6R2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f815a4de3397e36dd271d035da65d856f66fa428d912e9a3abd78402b36d900. 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/FRD6R2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3462fe77fd0feec28de957e0060b373687ee148b8aa72d1cfc7901c830302721. 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/FRD6R2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dc893f9008d6d4eda0823bbbe6b4c82d930367ade55961f6dbfed7d34199b8. 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/FRD6R2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff94465b4f0716f331ae7c34da16892b0d3b21d73051cc11a1c499877ed0069. 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/FRD6R2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e392392cddbeb5d52eaa99a00d45d4559914e40b26fbb29892caffc9bb4774. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRD6R2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a21a1b9beee6ac247686c348f7de56dd22f60880e46817e8d84129cafcf8da. 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/FRD6R2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a8c3934b48df3dd6190d1fe10cfdd1d78d1bc622557c7cb9ed0f9972323a00. 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/CIUM72300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30482a32b381b9035c47b5bdd7cf2806ca912fcff434e6050f70587a782f118e. 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/FRD6R2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172b98082324796bba5c95016547d7d1332c83af6d5b546c0c9f38e745d9174c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRD6R2300048.