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 0x5031d1bc9897edf8bc01fe84ca92a3f07cb37bfb36e715c07158f7479f419178. 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/f636b152-a90e-47a5-8de5-ccc6a123e40b.json and https://artists.proofprofile.net/proofs/artist/f636b152-a90e-47a5-8de5-ccc6a123e40b.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 0x49f8c50de94ac2a1d0d9e943ca1860eb0184c5ce0a667290b94714b07cb6c500. 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/SKA011000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9506b6ad55656700ab339266ae64358d3a75114036be4cf83caa6921d49c8b11. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SKA011000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5e6851fa74c21f9bc5966da04d776ac8fea6c5580fd3b2b881e469f1ebc961. 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/SKA011000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2183d95faf898830c5df4602d2e6ddc70442f36f47f212910100aa60dcafcb. 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/SKA011000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fd1c7d62f89a44bcf9b24fb5334ca258c470fb1ddfd0ea531cf7abec76c7b8. 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/SKA011200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5717ec7b042b4db4574d365f20c3c67c2c60ff69af7a63995c605de2dd871ea6. 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/SKA011200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5502a7e4465d16359a73bf80367bad23ca8a4264e34469ea0045164a04ef3f12. 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/SKA011200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb986b50489ffffbc9cea985b6e9ee5591457b2791b4867a98ef8597a0fe34f. 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/SKA011200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0dba4b956d776d3b53486ffca2697113cf36d8eec5ce9bba268e2805c0f346. 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/SKA011200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403038849d8ba534125b87d3473465c660303a433e9b58f6a9c8413da40e2885. 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/SKA011400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bbac494a8a52b42541b27c9ec56602650b5708f078205dd1a0f7a4f9a24f3b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SKA011500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c2d4a5c0f940d3a56d52eea654d9b23edeac777d295d6ee4de2a7dc94c3271. 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/SKA011500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cd0b2594937f4553eb0b98467e6f6ef8c9593d2b3659c0ad5ab9ba46a3a58b. 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/SKA011500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3fcad5f34a54f5ad2d37a50079eddb80fe1cf02968c25cabe68908f39d16f5. 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/SKA011500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15a01bb7fece5ad9f38b903b3d3f1cd96561accd6bea58ecb44f03ebbf2f92b. 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/SKA011300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096d1a226c76aefef84ef80539392e01efdd5ff64eff39e14ac14f291fb064e5. 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/CZA110003022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70472a549a9b54aac38172e54ff97024889db0df7bc286432f0666329acf9fa. 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/CZA110003026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096d1a226c76aefef84ef80539392e01efdd5ff64eff39e14ac14f291fb064e5. 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/CZA110003022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744d471b0b292777b9ff22682298fb3a4aafd8c130bad677ac7a14b3a1995a7f. 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/SKA010202105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9506b6ad55656700ab339266ae64358d3a75114036be4cf83caa6921d49c8b11. 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/SKA011000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f8c50de94ac2a1d0d9e943ca1860eb0184c5ce0a667290b94714b07cb6c500. 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/SKA011000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fd1c7d62f89a44bcf9b24fb5334ca258c470fb1ddfd0ea531cf7abec76c7b8. 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/SKA011200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5502a7e4465d16359a73bf80367bad23ca8a4264e34469ea0045164a04ef3f12. 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/SKA011200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5717ec7b042b4db4574d365f20c3c67c2c60ff69af7a63995c605de2dd871ea6. 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/SKA011200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403038849d8ba534125b87d3473465c660303a433e9b58f6a9c8413da40e2885. 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/SKA011400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c2d4a5c0f940d3a56d52eea654d9b23edeac777d295d6ee4de2a7dc94c3271. 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/SKA011500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fd1c7d62f89a44bcf9b24fb5334ca258c470fb1ddfd0ea531cf7abec76c7b8. 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/SKA011200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403038849d8ba534125b87d3473465c660303a433e9b58f6a9c8413da40e2885. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SKA011400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c2d4a5c0f940d3a56d52eea654d9b23edeac777d295d6ee4de2a7dc94c3271. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SKA011500047.