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 0x8d79147397ee3bd60a70324f5420d6e207794754a3034924637255a90ca11027. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60c99dbf-dc41-4e94-ba29-d525dcbc3dc7.json and https://artists.proofprofile.net/proofs/artist/60c99dbf-dc41-4e94-ba29-d525dcbc3dc7.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 0x53939e0e5982e5b2899abf6729293143011b7cdbd0c4216db29bec12fbe90dcd. 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/QZZ7V2528547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f2d97b6756433c35c70cfffef69608a26bf762bf43228af0114f46ea7cbfd2. 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/QZZ7V2528548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fd63200518c1acfc263dd5f5ec976628e46b33874216000a7afbe37eecdad7. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:40:21Z), 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/QZZ7V2528549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cd748738450e5d5062d1972e4c992a4a8aadcca47d0108e6e3e29e41a9a073. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZZ7V2528550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffd8935c0f0313cc9d4ab9eda8eed27421f2909a0a9aaa7d3c0311617e19393. 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/QZZ7V2528551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82769f6ba09027bb609100fd63ad07d52419f878c77b14599ab2a2388376f834. 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/QZZ7V2528552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32ab5b4d7b257529f99e0e50baf14ded380ef064364dc099e7aeb536ef3c620. 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/QZZ7V2528553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd518bd7d7eeef91c03aeeaea1aa8c500602a99e0dd3bd3315e22f5aae2aba33a. 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/QZZ7V2528554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5055351c32628d403eaeada16fdd0540db841d051f530f4dd575573a5c2e0ba3. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:56:17Z), 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/QZZ7V2528555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87bcda206a4133bd584cb8df98ce7c872618ba779d4beab7f0937f2fbec2439. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:11:24Z), 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/QZZ7V2528556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd557aedc360bb9925f6bf280ca595e66f9ccd95f5ba85c3b47da114149897f37. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZZ7V2528557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dcd05c2366e6cf65275c6fa397218c0112141c02ba2e6279921695d5cfcbd6. 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/QZZ7V2528558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac4440032e109abfa7d2311b127a34e60828720bf4abba838cc3a4e49dc7bc4. 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/QZZ7V2528559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3178c724b14376a686d7b596a5d2ae3d68e3b7a5146c0286d3e20efd1172e69f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZ7V2528561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8704175c59d8e96ff7702b1678f6257b84bafe27b9b3c35d8f4286c549090347. 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/QZZ7V2528562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c39533e918b1d4a363d89e1acdcba12fdedd9423220d406ed9cee12588d01b. 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/QZZ7V2528563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cb2a68edce6dafc641de050e9b6dec8e8de8e3f47fcf56beed46fea5c28d0e. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:27:57Z), 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/QZZ7V2528564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5ecbe8e260438862d460969b3ab30ca2e1d106579d53e1626bdbaeaab6a006. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZZ7V2528565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735c93ac20912a0641841e2ab5a0a0a7879a6b9e003873bfc9abd5b8c8c1611e. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:53:43Z), 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/QZZ7V2528566.