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 0xaa98063a84b88745ecc37e28bde94ba1aac3eb96c685edddfa158166b6db4aca. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2f6e331-255a-4a67-a572-032e5e02c7e6.json and https://artists.proofprofile.net/proofs/artist/a2f6e331-255a-4a67-a572-032e5e02c7e6.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 0x9fa7ef0eebf62a78a2dbbec180e7c3f2714d3f83cd7520e7f4b4209cfc9b6562. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ772551765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cf8f606150427340998271aabdcf1353cbf13871f0197f7976dd4193589b85. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ772551766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f225056f0ff6071d7199283bb8e244eb699236be9f75f72121ba7b5e4e70f57. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ772551767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b8d816cfa29a6bebaeadf943c7e4b561db1ec02492d1f20b2c85a09df8b4a5. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZZ772551768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f147f56b655633ba57115348a895ffe7dfbf9a1cac5edbd6fa63b8a33c3b687. 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/QZZ772551769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae37909f50e1901c0d93654b564d40ddac67208bc768952f337ae7cc79f53fd3. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ772551770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf358fe30ee2522f8e369df0fe3989be2fa313f9451b9dd016eabec1e6cc920d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ772551772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7f5dd34458e136662d0846510e6d026ee69a03e8baccc426876271a9b71c27. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZZ772551773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88e6a97da69b128cd0256ebedf4bd8f84332c1e3b16bd14f913cdbad5025256. 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/QZZ772551774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a98c0aa4234772509d1552104c7cca4907e13a78901104cc3ff9cf7e6b21726. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZZ772551775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231983877aeb64c26dd2eb2b61f6c6164ef8b92aabd509993a1203cdfaa8f7bc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZZ772557708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf679da11e23968ef1975d49a6dfe3a7648a4a321d893710a252c58497ad4ad. 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/QZZ772557709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076f413fa50190ab4bbfbcbafbdeda01dfc9920763dae12141f5e643f6346136. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ772557710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462f945ae72a6ab221d23b587fe93b718ec73e5dac9969ca12c09567cc86917e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ772557711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4902b23030a2f3d49ea8e6907854673d56643cdfb894cba929580e4568d28ac0. 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/QZZ772557712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83749d2165b7c6588036b38c3010c3006d48ab147b3106edc1fecbd68870cba4. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ772557713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38965dcc5c712185921043d2e4e8c59a768b8677c179e3fcc43016064b2dffc4. 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/QZZ772557714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe5d86254ccd78aead23eb4e1cbda4bf2e39f9e77f83dbf7e5ef9272fb7de02. 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/QZZ772557715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564755e8126bd0307881bf1c1a3cf92ebe76d29cbc24caae4d994f23a3ecf3aa. 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/QZZ772557716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919df0fb20010247ab36d7b02d0b95a069ad453df340b3aa2bd039c013675bac. 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/QZZ772557718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab52d4354b95b15042db605a48d5fe872297b200b1356c15b695551c6c42e7b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ7M2553216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a97f626e3c105b80384116c862b13546eaa80e26a26d58c071fed3a02a63d2. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7M2553217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d39a507327b6a588acc1b2be1addbb19d71d1f8578a2ccd8a165682a9e671e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ7M2553218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06822a06c8bb2d35d92dfcadc206198d5996fc81e4595a8c01280bdafc2eae6. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ7M2553219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fde30e3bb2b8bcfa0461a169f7308940bd7e0c54083fde3157c627f9c97476. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZZ7M2553220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f5d6663b77b6b92cfbfca7399f06da503607fcd61bbdfdfc4e50c0dff72d9c. 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/QZZ7M2553221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862db45a1ad78393a3ef73a24d7d1928fd11e6646c62693cca649e3fbb01ccc6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ7M2553222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9354f7b5a83650b6db73ba3c9c2386ac8af3cf94c050363b75ff7f205edf3b68. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ7M2553223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196e4df17db77e4f0983c77d33ff820f0bef11765a3d713b78a58f88409a9772. 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/QZZ7M2553224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbfd9567c83b2910fe01b64304d47130220a0643a0e057f1591a3a1027e75fb. 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/QZZ7M2553225.