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 0x2af306a93d78ccfcdb8dde19c8e1c245c8930a60caf74305679cd0f03f9376de. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db476a17-60b0-4e1e-a9c3-e627f0774fe3.json and https://artists.proofprofile.net/proofs/artist/db476a17-60b0-4e1e-a9c3-e627f0774fe3.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 0xd73978fdf8f9b229edd46d88a11ad36f009b7672028a336413ec2620ca1bc4a1. 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/BCGXA2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6579a73c02bc16451d4b08cc5bfe06b1cc36b5207c7b3c6fcb68950626bd5961. 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/BCGXA2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530cb934a44c0255fef0668d83e546d506c04e38b8a05273f1257a8781c5543d. 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/BCGXA2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21f846db119b36ee425d0cd72652ea2499571968c8dabcf4aeb80fcd759c70a. 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/BCGXA2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686babee55e06e673ed31dfc0fe2c8b1baca5af01edd8f9befe9fe30aa638663. 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/BCGXA2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74224531aff36958de195487a25beacc7b5cf2ef148ce0164426cd173edddd0d. 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/BCGXA2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeba94967ac56ad2de0de060060c049a723a364d56e0be3c39228eee64938839. 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/BXBG42400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adadffd02ad72bdf3c76617473cb553710fabc2a701ddd9ee79667909371367. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKVYB2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c028a5ec1fc47972b96f0d425a9fd59c31fb1ef0b27e6f3fafb0e712cdfef9. 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/BCYE82200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5d5802d830cd4c29fd0287e01fa23a76b93668527b2c037b31ea3b8225e4fb. 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/BCYE82200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade73a2cb04f02bbdad4e2c21e99d1eedfe21aba52f0d3d33b48ef81a7f34b10. 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/BCYE82200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7cef573e9047ac317f65cfd266eecec892731f81f277d2651a2a060ab692af. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK5H42500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d548520e051b9cc6d8726d1f6fca6c9d8a78796a47a5e56384df123ec3a708. 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/BK5H42500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6c7c6f230d9beeee95bd7310e2fffc5eda77afbb18f6106163b2d665b2a08e. 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/BK5H42500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56efd08b79b593b17e68de3a0fc48962f5523bb03ff9ca12e3d5cf464a17ffd5. 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/BK5H42500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7e385d72056436dc15724f015f87c8d80bc51d8443ed881564d6ac0b0061fb. 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/BK5H42500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc946ec76e815c7bb3fa5be730d72cc2ad67645cf2f0414e342b27b6bb0cbdd10. 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/BK5H42500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20221ffabf80ba811e5b236cbddbe7686db37dbaa6cfd2a89f99672186e2502a. 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/BK5H42500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151e4dec4b927e78a480848c39f3a99e3e43640d1ca9b1e8327212556cf2d7f4. 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/BK5H42500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc333977550d25e12c30be16746160a3708736501caac6c7842d33a8ab112c2e6. 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/BK5H42500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffed46a2c10f48175ad4c3798ae401cda0218447c7129578522d5737d5a9d57. 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/BK5H42500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d5e21a09865781a6268edc77209be0fcd14e0efa68f068f75fcc3727a8ded3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BK5H42500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83599b930a57c1f6906cb13079c70ab7001703862b3b8697745ea87ad9912a9e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK5H42500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6fff9710bb44ec7e46d9c2087b4ae7448a70c789d9768d4cb3dddb788e887f. 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/BK5H42500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc060ea9caf63c98b915c1a40464d06571f08edf2110a0d38fa275ad98707dd1e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BKVYB2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0654bd328bac73d0f721d64f84176e965d7559b6e7552e241c0232fbb2cc71ea. 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/BKVYB2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd969076d688f260d2fe76b9eb8a4382bb58924e4ee919bdd6b0c2b2990e17ca2. 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/BKVYB2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adadffd02ad72bdf3c76617473cb553710fabc2a701ddd9ee79667909371367. 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/BKVYB2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c61f68b3a68458b272787ce75392b4a5a0fef6edc0aa365b9747baf2fd81ccc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BKVYB2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef1853abec8e3b8467288a6d1bf0d61269d27cc6031131b80b9de6ff156985b. 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/BKVYB2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09af8536e8357d9fb27d961e498bcb8ddbf3b4fef4ea30942f811d3c68212215. 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/BKVYB2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccaa5b25dc76b13bf2bdef34f8a3c15e2db55141eb8cce0e3d508020d0f731f. 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/BCY2Q2400013.