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 0x3a81d8c2973c9a6b2b93450038253902c308750b7bd75b49ffd3d78d1a9dd664. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ce88166-ca4a-40c1-b885-09e87524bf50.json and https://artists.proofprofile.net/proofs/artist/7ce88166-ca4a-40c1-b885-09e87524bf50.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 0x9ccd35a6323ba68b7952f8b461c46400f70b302a5c0921c8cc94a9d679726a68. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZWFW2519285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae367fcee56b08073511ee3cbaa25f86e8d2403edb8bac0e76dcdf59d720f01. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T12:00:02Z), 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/QZZ7M2543661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda28510292ec382dd535c0abd4b337535e6f3b91031627c1846137df58e936d. 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/QZZ7M2543666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369827653432721e1c913cf7d3f21df34dcebddb89450c82ff0b3a30859d0455. 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/QZZ7M2594822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda55450f845b952109bd5bf702d82a7d075679ac2ce3586dae0acc124c197f87. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZZ7U2594933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cad116485682997611d0085f8632c50ef3a5a3685ac3384b964c0a050caa3c3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7W2533040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd430d3a2a86c4f1e18b3aa26a94bd8cab88ebf10b4b7882b89e1a3526a5e8d. 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/QT3F42588058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13397bf5bf4fd0adef606ab804a913a03a7071001f4b7573c9010d33bbecb7f1. 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/QT3F62550786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41642562037d2baa47a9df93495d5b72995bc2c14695f17ba38b0a7bb74fbc70. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3F62550787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e82c087d7149a2d5a5fae96f5992b6e1bc4f0b4a5857ae6416854d05bf8336f. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:54:05Z), 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/QT3F62550788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670e9cacb98f9a6489809ad87362b538de8b8f44b142962f2efbedc0f9f8d2f1. 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/QT3F62550789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed2b8affc5e99c2a050b4bfa1dea5f527d1862dc3d0a2f29360a29f88177cf2. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QT3F62550790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956ef4130910164b7519a44ad5b37210311a09aa44b99d4b01befe21cfdf9771. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QT3F62550791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182fac58b0253d605c90bd17863a56a1faef3802021bc13ef6d3a87edbb4ae5a. 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/QT3F62550792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a374adda4ee67d055005d9be036ece3e63333a02ea65967d65395d5f481415a. 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/QT3F62550793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140c6f4c253603ee3ffdd7d9da9a032cb667ccfec87b9d32a212182ffe5c1fd6. 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/QT3F62550794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4b6b8d245291576e60b0edebb86f532754b1e482421fd533bd7b061aac4456. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:18:34Z), 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/QT3F62550795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d5c14e367d0db72aeb3d64c3375d28e293652b71f1bbd92d95ed092198b089. 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/QT3F62550796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3797e4d3ce5459b883f7e4d699fe3fdc495595e1e98c93dd322caeffe908ab44. 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/QT3F62550797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629798e8bea1169802c703260fbf7372df78d29107292d630bd5187cffc574cf. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QT3F62550798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebe9585762b383c73e28271aa86d71345715f6ccc5bc1d6df1000c290809a06. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:10:22Z), 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/QT3F82513923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1285fea5a481ed8bfa4b90f3d5bb937b6d8a2ece3a6b5fe4aba19874c0ee6a4f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3FF2515535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03566f33e8acb0f1b359fcb67841c217598701a00da6c3a5e3595e5a4bf942f. 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/QT3FH2550337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0209ffc7bfd1de21bca13d301df3b033bd56a991e6bfec50c5a2fb3e87ee587c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QT6E62585849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575aa723a28a2d0d9cb96cd5705a5b5be0d82eafb63021ddff9f51cb96d6acdf. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QT6E82532208.