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 0x17956d36711b7ffa852f7c7cef317d4f41efb126f46a3115d1f809d444d64640. 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/246f0350-9cff-452c-ae19-df7b0effd4dc.json and https://artists.proofprofile.net/proofs/artist/246f0350-9cff-452c-ae19-df7b0effd4dc.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 0x5c7dfc8e074df3471778556fb8baaa85352446e31f6534640645724fd321dcdd. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/US3DF1909719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f622eba67d01fd6223e9d5e71f6f32511ac406058a136a182bb0b3b5bc7d9d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF1930322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b26ade025f2da5a5b5b895277d06da76c4e38c1d6c2839a8720e31bf03ff1c6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USANG2000732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fa3476deda40e33132062963ae6f1e930b3cdc50e8d42a2000629f9c36265b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USANG1902708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea442846046a39f8489797c640aab343f1ca577d4227260d9c9605804a110d54. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USANG2039145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7245ff2de116c0eb4557ad7d77b40b8c692af43af79049867c0292b4f0fcb326. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USANG1902712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6502bad9c4d88a77936000f93d410dbe7c3ad3fb10c3fae9ef55dc443cac61fe. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USA2P2017698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e15558b113ce1ba9f6b40e11666da8ca12e19f3a7515332780a7a8d8d40f03f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:29:57Z), 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/USA2P2123481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b794c3f81e76c14d2791ceca42bfff62d62316f63e249266fe783b3651e1d0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA2P2123485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788fbc31f4e6b972f14a8ebc3dc26f8532ee342bb57b3eb086d7a05c8da46389. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNMY2100447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326cd5650b07bab8fe8105c41ada9a018ec8b18c95e4d1eee98548c3b557e827. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNMY2100449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03eeee6c7bdec9b20e9d54bc3a7fd2c0c91b4673a4acb44be6fd7f56d0d5c71e. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZNMY2100450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b794c3f81e76c14d2791ceca42bfff62d62316f63e249266fe783b3651e1d0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA2P2123485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eab53ca793b164d8bcb81b93b0983f9bfcde3bcf283fceadce861daf90c4c6. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZNMY2100451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcb5459c074b5088e12503b0f938a41344950dceda0aa419a0a426d5a0ee0f5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:23Z), 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/QZNMY2100452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e15558b113ce1ba9f6b40e11666da8ca12e19f3a7515332780a7a8d8d40f03f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USA2P2123481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49653e1b790c1a143ffb52fa2ca5055a518b50b8a7d71695b2c9bae50fd8d73. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:03:46Z), 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/QZMEV2112341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba176430c17759ae7b8e0cec7ea25e766770293d84539e13941f171b99f2c9dd. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZNMT2204811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc2569973946c5cc49ae9040c4b48e519ab37feaf9b51765c18d02fb12ea475. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZNMZ2232625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148cd347dcdc4ac70873bad74533ec1f53fce3c1fb15e532ff6f388988252bbb. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZNMZ2258739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31b3b7f296c3b96186341800b8c31fbe5a25b0721c15df9eddcbc9b9c6c0e19. 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/QZNMZ2258740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abc7c5db915639f8d93ace61ec3a691392666f009deb6104b5c83cc3148bdb6. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZNMZ2258742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6292e7472dea549b963450a1021f4f5c527e3b3fc039293b7cf5851e3087d21. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZNMZ2261820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a49c113e42ad919149fe8147b9b7eb39eff97978fa0f40ca2df207db67cb376. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZMEV2359854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266960ddb4be8b6a631bb7cd64bf1c2ec01949b0774902efdc3e2a809bc6157c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNMZ2261826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1725dac1cc86c2bac203d671c5ec5beced080f2deba69a35b3ecdceebf3609af. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZVEM2343542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadde7d040136b50ad45140639dbba7397c8e53e8fb76b6c69f567d85ad7425f. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZNMW2379746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadeaca2d5b643ee51f1386e58e2c029c6808add546f9c5c4693f6beb30e929b2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZNMW2379752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8042aecebb8eb099891b384acd0bd71586c0891afb396170c57bbbb545d8b16e. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZNMW2379754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3056f0f97001e36dbb30f651ff4f60eedeb0e4f365d56d711cc68efa3ffdf9e2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZL382412090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536ab266778d21ab10bb351718e2040416b9dd26fb557fd806cfdd31f060d5b0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNMT2466455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1059f4c7be324da75ba86c6198488b7cb606ad15896ade2f5ddc4b942396a582. 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/QZMEV2520427.