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 0xfc2cf14afd5ea6e41808c5bc5b68237571944e9f77aebe0e30b0ff8d7053d010. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bef6b9e-c097-403f-9ef4-9d29df380854.json and https://artists.proofprofile.net/proofs/artist/3bef6b9e-c097-403f-9ef4-9d29df380854.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 0x8ffc80712ee1e52f25c97de64d2bf9e532350c31ab17a53ba5db3e7c6d1e636f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CZH441700182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3e92b34dbdb549b8bf650333942efee922f63390e04543a7a8280701a2ff21. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/CZH441700183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211cb315de67d5d63e88f7e57332886a2c5e9f1a944acd2071648034319bb158. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CZH441700191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6ec485df396c83e7422460cc07e19a30196f4718be24056d28b0b164db8640. 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/CZH851100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c92f7e7a4f756f151a1ddcdbdeafe0b2da2c48367394c022ab8d62f2d712cca. 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/CZL411400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e93d5f5dfd030dc2dcb3a0bf7188c06f6a8627bd6ba7e7261429d0293f0296f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CZL411400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01310baf641ce99a6fdc2dbf21e43e8d58c485e20deb42992a3912975217a8a9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CZL411400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b1ce71a51131db8661b8bb04f1665fa849d99a3c022d214e92f78992b26b08. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:23:23Z), 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/CZL411400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08192e210439d9874062853adcec7116fbfcfef4004bc6d5078d8af4575ab8db. 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/CZL411400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245afe70cc666678527694cce5341ec83d1806e4626bb3fdeb349afaddcba06d. 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/CZH441700140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cb103aca1fc34ed0612865802d3740beb7f01e90cd9adece2a73bc4d069654. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CZH441700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c63e78d2062d6e07331bd6f9ae78b77c6bef9271a528bc9ad6482010a025f3. 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/CZH441700143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20ae04ea0e04183e8eac5e7ca7f1bac10a2b9eab61edafb09e4e804c676f4b3. 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/CZH441700144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93801264d339d05745b6b2e7e13807fd2716810f1b1207d322816cd10eb4600. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CZH442000168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2404256c778e9ba28292dab394065db15c3446d476fb6042eb1caf8e0988d94d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CZH442000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028f4c1282f4e7eab78c346d701b6a7c40ddb908e5fe070fd2d112852a3e432b. 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/CZH442000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9908f98d73cf704c530237c83958f3dde12121d578907ca97970eab6c47027. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CZH442000173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295bde8b7a860191335465c3f0dfffd44ad29b82df985caff5aa8fe4cdced4c9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CZH442000174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99d7864619bc24ae9cd7fd7d7a970a858df1b86c4c88c9270ab04365b0385b4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CZH442000176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1844a2d1ced00ad547ecd5b7fe907218ef27edea4869eca3cc335683fa4a93. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:30:02Z), 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/DGA052332885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae11a3c0c77e84d9782fd9e817f353b2888aa3a37582d9b4ef0a8940dc1e6c8. 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/DGA0M2332642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d07ac6d1a11500a1b89b2fe86556c88245ed7aeb8f9b2f7cbb0744d7499f2c9. 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/CZI322400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5971be24fe36a9768db099efb57eaebcd890e4c15de9ea1dc093d72379968764. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CZI322400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac0e87cf4c6cf2279172a1c0cdb8aca567996dbeda01f69234d2b9d72785c50. 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/CZI322400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df49cb23730b6597ed2a4134393de3d3cfe7bd8690b8ad1b2f67b271d846f8a. 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/CZI322400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62381e3bd07c24c55e429518c9332c86d90c4e7e1ab7b01bb60cfa73cf28ba8. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/CZI322400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c6295c449430341dd64af1a58df9be000913a0b21b0eecbd11def6e99856a7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CZI322400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b732c863a9d6e740ac7b67e00e9590a581e530e8ae1bf594a18373dfc5303b9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CZI322400010.