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 0x989245349623fc6c2a6034392382245fb5ac1a28ed5cc36a06d874e0ed8e1521. 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/9184a1fb-e3a7-4e8b-8448-fc9c1906aafc.json and https://artists.proofprofile.net/proofs/artist/9184a1fb-e3a7-4e8b-8448-fc9c1906aafc.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 0x8cc6f3ab31e0602867fa9c0cfc84f0f30444530ebfb271afcb8f8404d5d936e3. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:16:45Z), 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/QZNWY2380815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73060eb39ce1dc71524952222962271e741e662c4adddd32f93ab2403a656af3. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZMWW2365336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281a40444102d81005be0327b0a31c16d36000a54f638a0e4b989d09e6c82c06. 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/QZMWW2365337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45686e33c17e0567d87b05159c48d00103cf1b24c130bfe1c537738193408562. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/QZMWW2365338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7045752664e88b59eb595de835ffe204d84eb3414f1015896aefed8e8c43f8bf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMWW2365339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce38f4ad08d93d82862db781171739f9b07616d712826ac0ff452c84d34fa0d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZNWY2393277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0af3325fc45cc9677454c01f31fd0bddd7c99131988cada8a7612fb0372acf. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:01:30Z), 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/QZMWW2365335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc608b40fefef3be843066aea276f1e84c4b9e7b70ec8e2de201eaa6585b25c89. 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/QZTAS2377250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ce34c28230bbe8faf51fdbced4da1b4fa75df131e8b7032dcd756740b0053c. 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/UKZGC2307294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e7248129d0230846e19a5dde9072463fa58e8d3fcf259c93dcae65ca88ef99. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZTBD2331165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9df647d5f8793a6b1ff6b488236b8e02f862e310e05bab990ec922f25326900. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZFZ62422930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60e2e4967355fe9878ab6b9857857ca6f17a8178477ec6ffba90bb4ef880935. 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/QZDA62402774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4613c39de7c5d04a2d757481bdd980133d067a20bc8add7aee82e1cd9586029e. 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/QZTBB2334339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95465f21088fbb39ebfe7e1cce942c16a75fe632a9913b92d32443d65342944. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWFR2305894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291c65a84c06282d98d604da1d751a11fd7bd6a4e4b2ba124f1c75215dcf50d8. 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/QZTAX2369044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb44474a0409e50b23e5bcfb58aa9830cba45e82c95cd15c76b5a17b4255caf. 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/QZDA62402775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e7248129d0230846e19a5dde9072463fa58e8d3fcf259c93dcae65ca88ef99. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:13:35Z), 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/QZTBD2331165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ba3576b2e4514ed9fe1320d527dfadf07e7332d12216d9038dc863f3434ba9. 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/QZDA62402776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa199597ea1ebeafc589af8be322db72e652661fb9f705ee112b6e0bb143735b1. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZDA62402777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a73bb886f0143b6980067bd1b3df7f98810a22c66e56f7303660cac6eb5eb9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNB2492060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb1c4efca6bd6daf3f24d45f63cf9416d9fe4d570249941ac1f0c45d76b5d85. 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/QZMEQ2495028.
Heart on Fire vs Cold Heart: Syn1cle x Raynix Beat Battle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9caef20da25a810fac44801a9aa030367361a6175f7ef28e04b1c992cd04c3f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNWQ2429879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a76644b673ea143102153fbc66d3762977b98610588a9123e2abb1771af9bcb. 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/QZNWQ2403187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5079fdc410ac5566eddc1d8ddfd906c75154530c2b89145f9ed6787283f56704. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMHP2335754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62072a4586de6566b98b4240f6181e91f9305cf339a752a5db28a59ba722b99f. 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/QZNWT2438245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa305fb24cf8c35d63146ba287f02f1b49877912c7afb21b0184b9608d73ec8e9. 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/QZNWT2438246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9834f406ed8e4042e4d6b5ec70976f02333bf35fc03fa8fd4c288322e4de9b1d. 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/USANG2486542.