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 0xfd8eb2d7017d882c7051430a4b89d69827780a2211e42d8fd2acd7792362d623. 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/f7571ee5-4a32-41e1-bc47-38ac8de19e93.json and https://artists.proofprofile.net/proofs/artist/f7571ee5-4a32-41e1-bc47-38ac8de19e93.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 0x24f7cee8bfd0617ddf630e0d7eb372a7f71742f8708a1a8a03e12d5ceb83a809. 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/PTUM10000279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036fbedc90f5afc049cbcd357d05b4b000fbc99e087167d2fae3d7bd67cda15c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PTUM10000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77a37204a0d908a622132dc78f71e66706d770658938c662107994ff3ef58c8. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-21T23:36:40Z), 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/PTUM10000281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b6bd48e77adee30b3400b68a09c9104af30ac89380560954b34f14a382d10f. 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/PTAA18301802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b8b6dcc8d5b4e06ccfa3698150a5445a5ceca7ab9ef8db223991247c0ef8e9. 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/PTUM10000282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08757f1783d5ec8bbc0b78fa0979d6badcf04d31524564ba3a244380899b51c7. 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/PTAA18401559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd16aae7e2bbc52b69a979bb3ff7fc709baef1f5ac83b5fc55ac83c24fe20594. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/PTUM10000284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70352ec4d95562c869c49c09defea45e4b7a19717177b64238ab6476708adbc5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PTUM10000285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aedecb626233c9f2e6e1d04bca73d618e9bfe120cb6ba77cf592e514b1523e2. 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/PTAA18101590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01f96ad500eb700005a1f765b231e1f9ca76b74f010c9069d7479e8b15b2662. 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/PTAA18101592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036fbedc90f5afc049cbcd357d05b4b000fbc99e087167d2fae3d7bd67cda15c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PTUM10000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd16aae7e2bbc52b69a979bb3ff7fc709baef1f5ac83b5fc55ac83c24fe20594. 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/PTUM10000284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77a37204a0d908a622132dc78f71e66706d770658938c662107994ff3ef58c8. 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/PTUM10000281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f7cee8bfd0617ddf630e0d7eb372a7f71742f8708a1a8a03e12d5ceb83a809. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PTUM10000279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08757f1783d5ec8bbc0b78fa0979d6badcf04d31524564ba3a244380899b51c7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PTAA18401559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70352ec4d95562c869c49c09defea45e4b7a19717177b64238ab6476708adbc5. 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/PTUM10000285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0695ca6accc6c1072398a10e761dc144f1b8095efa03b39868d7288267705785. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:20:00Z), 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/PTUM10300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbe44f7c06f37a31cbcba2e374706af02cc81bde4008e9252488a62b0174a2e. 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/PTAA18101587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21be970de3b02e9dec7d5ceb501d4cad9adba3bd2fce84447110c561d8e4b9af. 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/PTEM18800133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74a2603c0fd159871c025aff39504597dd1353833cec562456080353d43d078. Chain 2 (Bitcoin): anchored in block 957242 (2026-07-09T01:00:33Z), 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/PTEM18600141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ba0f51e8e76d2084ce5ecdb95eadfe75e52cb4c5ca43f69858c4256095636f. 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/PTEM18600054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1b8f3837b3d82a3383f4006b7ca91f1d10c6c4b5956e262ae2ebfab7bc6126. 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/PTEM18600142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e116debd5cf9e15c712f9afa73ef82dcbd029220a468051ccbf85978ef5f04. 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/PTEM18600144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb30aadeaa7bdf05d4ee214d561194b172f1bb283e340744b2bd00c9084f716c. 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/PTEM18600147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae12b9381308b6623e8ee2060ab9b674702f40389faafce8676f2009b0b80d7. 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/PTAA18301801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b6bd48e77adee30b3400b68a09c9104af30ac89380560954b34f14a382d10f. 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/PTAA18301802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7953a62f063cf0b0ca66802cdc58eec84a38799b981abd730c0ca3685d846a0b. 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/PTEM18700134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd16aae7e2bbc52b69a979bb3ff7fc709baef1f5ac83b5fc55ac83c24fe20594. 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/PTUM10000284.