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 0xd2033edfc1dce5274adb9f6076ebe1d18603ab5509b88bbf7d681070edb67efe. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd6c40a0-07fe-4551-8c9b-b87e71cf2550.json and https://artists.proofprofile.net/proofs/artist/bd6c40a0-07fe-4551-8c9b-b87e71cf2550.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 0xf432dbba24ab5e5b2d2dbe7b75bc826bd8b46e0afa69618b4b4b982ee7f6664a. 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/UYB262300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e6997dec37813d279cf8596a99ac22ec960c0481e939fc0d6c83311b3a3554. 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/UYB262300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7589303bb917cc97ba92745c180026d242ee384cdff5a77c1046265b889c65. 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/UYB262300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89a94051aad3a9886cd92d45f15bae69a22c5a2eac47832705f842c26521f8a. 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/UYB262300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bb11997d51eaee8ac4e65ec699d23d57d8cabd03768df8fa33ed7278d10b4e. 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/UYB262300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e321aa412e3562abe09be00ee8a5dac571c2ef68f116f511d2e90e14bee1a2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UYB262300214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbbc581c9a8536677e14d25c0e26e486b81ae582dc5672b3deb425f806735ff. 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/UYS261900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7351e499caef6b0f2c7e74159598e28066a6c6422af3a214783955e87e3cc8b6. 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/UYS261900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf612ee02140e7f16cabd1c2966b302bc3cf6096681d6700bf919b208ebea1bd9. 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/UYS261900064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e5c78a5adb7a13e2bbca757a5e818f5efe97683956490ab20ce1e19f2f3dd6. 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/UYS261900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a435ab2d12c1a7b917f28988e79c318aa9d53f52d77a4997c3d79f38604026. 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/UYS261900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8e5d073d6e0db07becf03d715dc2d22fa12257bfb5aaec4d5b2148a1732184. 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/UYS261900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5453fe41c88a80937a815582b2e65c6ecd9709e1cc4764f091be7c998bb205b. 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/US7VG1840766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02927074090499ed04fa528d7067d32f7b8ed0989a69214a5796a621aacce7d9. 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/US7VG1840768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ec437315b8b75a4a81f17d02e38d4d506ab148b833b4410a07c3c645c73806. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/US7VG1840769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d5bd19fc5cfa6a5a4cd90d47579423e580b3b49c8d0b346c969bd17d03a337. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US7VG1840770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d108209703b2858194054f4a8279efd64ec4c65c4999ced448ef3bb5e1218ba. 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/US7VG1840771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4096dcced5d99633f6b1503cfa7824d0d268ad5896c8d5e76b1e443468a23599. 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/US7VG1840772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6527e53344b51d8190f901ef58d14bd4696e8fbbf7ebc343e2605b02d5e01e76. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US7VG1840775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1986e87a695d0d066e4c76d819ace6ebf48e83aac9d69e8dcdee4a3e78473fd6. 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/UYB262000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dca45fd3d7fbca336b1d2e1b0c288eb3026b0911b4137f1f6f4dcb2d8addbf. 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/UYB262000322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39566e510cf0145c84a179f8c8399b52da99c47e14b599841022365e9430a452. 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/UYB262000327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713b48c19c681307da09c2b275ac1991e35535e5e85be1eaf0397a2f721c053a. 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/UYB262000328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c447b3615c237757d0ec859c9a803c4f105f9b71a5d2aca2858e15b18386890. 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/UYB262000333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1986e87a695d0d066e4c76d819ace6ebf48e83aac9d69e8dcdee4a3e78473fd6. 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/UYB262000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39566e510cf0145c84a179f8c8399b52da99c47e14b599841022365e9430a452. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UYB262000327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717d50f95a3540bdeb095a63e848c6baf9d7f03d401a463630a1a73608e6080a. 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/UYB262300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72930d0efcf94db51cb1bf8c7d0914d2a8bea4e1cb393c9327e0ee6629b09eaa. 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/UYB262300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335e5141a3e70cb0f79f97988aa98c887926be38894f161acda82c2a059d4e0d. 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/ES71G2138588.