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 0xf755fa288e0d47e0d843a25843e4ddf10083c964c013d18ef58e4e9af8bdc34b. 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/b293fa1f-2874-4303-bf39-40f70dd44f3e.json and https://artists.proofprofile.net/proofs/artist/b293fa1f-2874-4303-bf39-40f70dd44f3e.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 0x415ea5388288a13bc9b60485cd4960bfa30863029f047a1b682698a1a2bdbfee. 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/QZES52288405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31090a2a5c3ec4462c9f5cb51a1b57ee3b976f1ee21f0ff000d31a5206da6a8. 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/QZES52288406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0504797dde5028526c84639786d2ea1f6364620f5c1ca0fb8042f520b444f74. 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/QZES52288407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65511a8789b72550b88d4115cc6d6bee280b6dc4fd9ba9d737e4a7add73e52ba. 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/QZES52288408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24ec6bcd441005afd0ad5432584f383f65d35d6d34f836d2b0ee2b67f4121c4. 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/QZES72181627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c17febb279a1cfb9bfbea3992ebbe253f9753503aa87e29e23f60a15b90895. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDA82105244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c52f38c54495ac6bad3680ea070f544339ae326543ce610b427bba0bda4982c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZES52288411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d98d361a77fa60529356cb6c6d34cdbecfce0c6097ac137b9af7505a780c62b. 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/QZES52288412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08abe9a8cf117d5107a725487d851ad3084325fe4c519afee77efe76b333e325. 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/QZFZ52126116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c35c7667b114738f39eb157a80942100ae9469f92ac7e6deb58e62671e2c0d3. 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/QZFZ52126119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd390ece7cea681c7fa9c20bacd2ac267dc1f3d3ba78208babf5e7c1b7dea8f. 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/QZFZ52126120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784fc1660cadccf05609ad81e6396f9aeec79f0a90889e07c862a5a057b9dd4c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZFZ52126122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69eb31b47146291cd144ce5fbbd2205969c01080a9b16caa2d0936f0f9fa0f5. 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/QZFZ52126125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3d88938f8f072ce94fe7e75537eebd82dfbf92693a38d0dfe86c69ea828b0a. 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/QZFZ52126126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed76ffbcb5ad4a451ea60fcd074c44e19026ff79e0f84f1f622273a2413be4d. 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/QZHN92180228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24ec6bcd441005afd0ad5432584f383f65d35d6d34f836d2b0ee2b67f4121c4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZES72181627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c17febb279a1cfb9bfbea3992ebbe253f9753503aa87e29e23f60a15b90895. 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/QZDA82105244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461f643c108f0d377ee17c313d2abc8a54665e12792976694a38aa05a036bc6f. 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/QZNWR2092997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792f7ee1fed1f533597bf3d92161e23b73674f553d09235a43f7365b07119f52. 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/QZMEM2021261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7c05cae280125a6d40cf01699ad12e104da5b048e50a81dcfbb66de89e5978. 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/QZK6Q2083248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b1a7ae91cf6ffbf41433226529dbf3ac4cf60f984e189392be05ff6a886676. 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/QZHN72030656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2f0743057403d102ce72b9d018d8afe1f8dff4149ef54cb97cee60d51f1fb7. 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/QZHN72030659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87084b4b4ae2608f8a790d80add9f4015d51d1afd95ca3a3342016af165db388. 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/QZHN72258991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70483ec5ab07258d9ad926ef0fcd23c63d5c5674ef09ca548bc02fef7775c4fd. 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/QZDA82076632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05caa1930480da4e709512611b6f33edd71255cf0c573adcdb288675d9cad058. 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/QZFZ42033455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634d8735770b2a311369519291cf62378c41acaf519f8687d7cc5ab635903d60. 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/QZFZ42004892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97bc2146c9e312d317b67ce99f3678494d20b482c4b5b1759262a18f71f584f. 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/QZFZ42004252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b217f01b2e50bba2b99dc5b57f2bd934cf1cd8bda564920a63513bf1983569. 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/QZFZ42003732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b686e457fe347fc9bf9372be3bda89bcdbee761664639f34c87d901fd0244db. 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/QZHNA1948839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a63fd80c05694a6d770d05bfe40debc3270761862306024a11bfa421f50772. 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/QZNRS2056375.