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 0x2293c0ddf6b80b4a4bc5c60dde97d46dfea18a89d29c67dc0c8b90ed0c9dd1b8. 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/9b32d1a9-6bca-4345-bd30-3a76112427e9.json and https://artists.proofprofile.net/proofs/artist/9b32d1a9-6bca-4345-bd30-3a76112427e9.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 0xd033a4bab008108f947bbcb2375381c75238d50431613c03b0581d1986e823df. 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/USA371145092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626ff5a3a9328c1e17d8d4cba9b01daca6c2354e3b3906861c6103b13871b62a. 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/USA371145094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd9a9d5e364203040e4e71d48c75cff4cecc08161754fae3036e453ce9b7696. 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/USA371145096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4431de50cf2cd4449773238b59590709f15f0295de4910deff5faa5af631e215. 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/USCRH1051104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e3c8466e0cb4ee30e1c5c895680a8c093f5ad87507bdff0ba0e64167a6043e. 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/USCRH1051106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e742378e474f8417c95a29f63206c7fdf98add894bf7c7b5efe1901ca3cb6f. 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/USCRH1051107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb32e39c042887ba1e8839726f977860fe16a3dc0f1b020799e0ab6837823d19. 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/USCRH1051108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d5a697d6ec8663d1c00fac8b488db4f09e5f1b7fa3f57158ee834dd17967c0. 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/USCRH1051111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d420e1bc7578e200dbef4aef3cbfd432804ef56a966952a7c214bd056d0a37a. 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/USCRH1051112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcf4a0db6fd85798773c1dcfb8ec0cc1409c4b357bca416fd7a77a725b9079a. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:03:39Z), 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/USCRH1051113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9641e1f3652bc78b8528424db24719d2627620c948a2c11c4989b2539861a514. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USA371145083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeb0a598751fb6879b9c9d9cbd9db1a499ff6213e67b6599fbb50f449bcf350. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/USA371145084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd94936b7bad2f0b7c606af986d75fa48f49b247d30761eaf7be74f677e5428. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USA371145085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e72dfd1802835be188f336c154c3a880142ccdbcc3d3ecbdaf2873313d8c13. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USA371145087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8319fb768f4aac4978dbbe47e88a394f6f8c9363c9d41363c8a286067689d19. 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/USA371145088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46dfdc4cfc13a34db8faa9b8d8ea592b7689db890a0017d07fa1128ab4dc248. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USA371145089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b1aa402554473a75c118a9ee8ada32d3b8065a93799c79bfc9b78307390151. 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/USA371145090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13a45c5fe66bb98a349a03fc84fd0b0ec1bbcf2ba5ba816fd82c203b114da5b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USA371145082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164882f73b74928c5d78ed24c8438cc2eb08c40260d8810b257540e27b309b8d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USA371145991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acedb58502a5e960fb8d169636c936eae9bad7dc42639e3c8f9720f61f3b5f6. 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/USA370581551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e19cb6cb09db31045afdd800aeeafc5309dd6934a662310307c87fe4e7c113c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USA370581557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5fce9aa37a155356a14bb26d8a05bf3a03ad0251f0a80bc024ef8c3c147309. 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/QM6XS1808135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58847646c2008730db6921c452638326d197dd48c1021aa0ea9f4194e8d9f81. 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/QM6XS1808136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4ef142d33cd19720e35eb322ffc862a8605e3c602688398d242892a1c6af2e. 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/QM6XS1808141.