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 0x7ecc4895fe9a65040138845c2ef1992b476bca6fdd6c7371fe7b54f7e3d2e839. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38e17033-fa88-4109-92aa-8912c4dc6fde.json and https://artists.proofprofile.net/proofs/artist/38e17033-fa88-4109-92aa-8912c4dc6fde.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 0xdbb3decf65165750c78e401263a5f3f1b6be8ee2ab5bee55cf2f0635ae64b8ea. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DES562210017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebb900d419f5245e72b41dcc2c65f4adf296db5238af08990b684a45bab7645. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DES562210019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07c54089278873336155a6c92c4b2abb4c4eff5fa6b59fa1ab25e07243cf5ba. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DES562210020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2421a5edb5e74fe021d9ac4256d94fd60ba5717a2a26ecd23ce049e9b746aeed. 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/DES562210021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5936550fbd7ba94cb2996c8081aa947d1fc999f0c76421d57b94179075de6f51. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DES562210022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3530939dd09bc91a554b45c6247aa73a1864c7bdd5b63b6bed415da831d70b27. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DES562310841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a724df85cb12becebe03659607c8ae4f029e11fcaffda80f46f4fb93e6beb9. 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/DES562310842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2569f5a217cbad36574849e9e2dba162cf0e97e2b35ba6abd989416349d12e08. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DES562310844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef79624a632f45df11536705f803e00ca9a66af502404644062e0416e7e1f53a. 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/DES562310850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7728d455e88aff5be8e8f2457b84082857aa5e71df2e6a09ab3d9298c4a6f493. 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/DES562310852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb02344d039bad1e9b17e5b6e8e1870b71607ab7475dc6be60f3cc1e3bec6be. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DES562310839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517af3c07640e4b2d2dd26da595a2c1b073d674f09a388ea3bf89453de34b988. 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/DES562311187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2911b1b179e0a6b0607a251799143b7b4e331c84ef213636e1615a67cee4bd54. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:43:15Z), 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/DES562311188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08a87d7476f1c0c72229ca43245c467cb5197529006b0aa4fc127f31d612b38. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DES562311192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55af4b355cfed95e859b000c706e64135bcfba41b95ca2c47d63d66cead89f86. 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/DES562311193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8de554f83f5be895b0ff2e17fd1de8eefa405bf3c715304b2e4fae602ab90b8. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DES562311194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c71b2193bb0b75e1a8f77a12ed2b0f22ef81f3f35a08d26b80c37edd1a702f. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/DES562311189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a76ce15b9078ae22135e760fab826d04bc4cc1e230ddd149ab114f5a11026f9. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/DES562311190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d0f6d054b6295c696c7f8e9931a7a7aa7c16fd3476a411b85770e9a3566438. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DES562311191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15a5008d4bbb4ae994cbaec456d605bb951c8ab0f3279df14068d4672847164. 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/DES562119101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd828a6f6693610ea5172fbe55f22c279493928c5384a4a213e0209f00dda87e9. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DES562119102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb153d4ea3eb7502dda5f477a6070c7217a508ef6d1dfeeda0811100ff368b9. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/DES562119103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ce0bacfb8f6972dcf563cc9696c29a819ba64f92ee0a01fd3d53e34349a86c. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DES562119104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb64dc0332347b2eb9a59596a8aa8266560eaa44b2c960ac7a78a07f7d65d3f4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DES562119105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41c560b896813e830f415d92642f32b73e17be3ac4535f487d7f6b110837d20. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES71908922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5facb5d44b1e88190494107d9516e5aff8288c1f6aa6c01a628a37046923018d. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QZES71908920.
Bow to Your Masters Volume 3: Judas Priest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbad2bb5b5facd493994c8c422e5f00c963fc9d365c163e879c967ca744fabc6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USDBY2400373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43aff7e663de62f6b5fa7b8c9f85d3e0b7e342c6cc0317f49c6e2da85015f0de. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USDBY2400378.