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 0xcb6ac3fda6d80d5a8b64d82f9f9f36c06e036801f43535a0d68d73b3d70b579f. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ed78add-c768-4b60-a1f6-ee9cf51f7f26.json and https://artists.proofprofile.net/proofs/artist/7ed78add-c768-4b60-a1f6-ee9cf51f7f26.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 0xd05cd62d3b980280977b31a0f429f63de78a3625c621c11e3f6b4b4eb6d676e5. 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/QM4TX2459274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6b85d92b9ed53a676fc58cf89d67b1957161650d11d8bea0d283d3814fc1b1. 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/QM4TX2458752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beca8f0bd2abc97c41c8058dc4cbfe54f8c3b7db941537bc8eab91b2463f1b6. 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/QM4TX2458757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77730be7bc88b001475e1f2bf4051a623f5b2f40ad8387518c07c3a8ee72441. 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/QM4TX2458779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416359ab63230eba6090051863fa5676a2d5fd46293abbeaa120299bb708f3dc. 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/QM4TX2458914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c654a7b2db81ef563f602c434b26ea8adf8f96d930af9339698042c09be7373. 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/QM4TX2458915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945195dab102229197ae9432042a25dcf301d5645222ea8ed84e6f43d95862a8. 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/QM4TW2462997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf6969631f937a8bc0b187b8e8b28bc8fb8bc8989e2ece04d0dd29010b3351a. 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/QM4TX2459009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08a2f4fea1fe5df57d16111408967db8eda1e8e56ffd7f55b49f4dc406d166a. 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/QM4TX2459110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef975bfb15b520e4e0b2068f33a917feec8e4bcb2817724aceb39aab89038874. 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/QM4TX2459113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e65e0dddd7391f2df44b4bf4aad10a5a2d42cc9b88fd260ab426bec4be5a4e1. 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/QM4TX2459120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa469af3facac493380f0c13aad07a79afbd089a2c2b6a01e1bd8ce7e45f1dda9. 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/QM4TX2459130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fc07b8f0cef0a8a0e4cb53b68a59cc00d246bbd0b13b4b61609c39bf277a3b. 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/QM4TX2459141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901c235181af30650bccedc57c61a57b1cd840d4779393dc0c70d1ec970ada73. 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/QM4TX2459158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3684ab5ae976e9540f6e65beb4b6cce4345ea9c8c784980fd191a8c421f125dd. 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/QM4TW2430473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4dcbee6de73134785c98bf0ca5749d3240b9d08006fa03e901aff387c8220b. 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/QM4TX2441895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e2a354eebc8d57560d8cca4b039866abaa1588c5702e3400bc17d9159fb754. 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/QM4TX2459190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b06ba3f7350f4e949ec9be50515a66a350813dcc7bda88d279ae0c4964198ba. 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/QM4TX2459194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1587ce071ab1b87bfebc52829a0a195b11db72822c1027514d3ecb3bc60fb2c4. 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/QM4TX2459209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e888527f39f55af6b94148959081eb095f5ef409a338d9d070df25758e6a5b4. 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/QZK6L2243310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02656ce30e1c41b007edda3684778691dd524c3b234bc12c222f93aa22f4b87c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZK6L2243313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102b16cfffdb61a123551afe278442b73a4413745b21caf66f1961f972d86cb9. 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/QZK6L2243314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a83dce7c9f738be949f3220af75c20cce980b83cb69752fce5ed2203102bc1. 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/QZK6L2243317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ba9bc08c4ce6419392905c9ed64d140d020076e92d315c9367f1999fb9ace1. 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/QZFZ42261294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f23a2bb58437e64b7a28e7f22553aaac26a6157a320ed7fb2482172ac11a37. 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/QZHN52116735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a7e2fd3cdebc0e011d381774ff29d6c9496eadab043b637a9aa4accab65be4. 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/QZDA62148816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4225185ee6155864923d7c38c22352442f1134467e6924b6844a1218f518a1. 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/QZHN52116738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768b0a378254bf57142beca536b5b05bfb1242103b635a35700f74a3a3f89955. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHN52116743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356c11014cf0f0a1973d9b2c54d234fbef472811aaca4294bf52abe76e201692. 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/QZHN52116748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc422cdffb6018bebbb403ab213c64b4f1c4afd277bb1d3751a1c8e4c52afe817. 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/QZHN52116750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe323415b04e2fe1f5d5c42c97df76e87cea0da250b02e611f4249b70dda730fa. 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/QZDA82346733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ba9bc08c4ce6419392905c9ed64d140d020076e92d315c9367f1999fb9ace1. 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/QZFZ42261294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2ae4760e83d7b1769df0eb4bef32266fa5fd252d9f6a9783cf443148756129. 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/QZNWW2126373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb74abe01475046a1484c58a4f9786468849d608afe4e87021f99ab42d42bd63. 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/QZPLS2287812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d3608578a9dde79dcdd84b957ffd76a7bca45df5fac41c57a26ae1deedabd4. 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/QZMEM2394345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4da233247b42329ae958888d55ff4d935a55025b3be31fd95b2dc947608e6c. 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/QZNWR2426486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58db8abaf610b45325075847cba655b9bdcf89497074215722ff4da74d0168e4. 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/QZES72108083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc25f4a0513567897b9ef4f3816739d31956db6e770ac0bba1cbec98261375ef. 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/QZFZ32264153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf25358b0c7c6ff6b0e18166385c62abcab4cc3bbfb5c5552318ec95974331f4. 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/GXF9Q2401862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f68ec672d5bdf20f18e4c5de9da7de26ddce700b227952b4dce148e561fac66. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFZ42596358.