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 0x8697af55662e5fb7d1c8882b002009c12a23675d777e7937916ec94d077d38fd. 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/8c898448-a548-44e6-8d68-1b10178fc134.json and https://artists.proofprofile.net/proofs/artist/8c898448-a548-44e6-8d68-1b10178fc134.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 0x0035e56e4ccd63814e3c6ec04a2c6b8463dd2435b57c0d07b0f034779d2ac0e0. 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/FR9W11514225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cc3e514af9875d69ecc9e410d16be7e62e061234c765c4d3f38766e4f28a6c. 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/FR9W11503179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7cfc25c6bd980f3c2059db316c0c1eb651911e40011bbe6f82e8a04c4e42df. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/FR9W11503180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bea737d8cdbabc8304aa5dad1974d71b8bbbf2da86bf830aeebfd8cd653b3f. 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/FR9W11503182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce206dcefafd22dcde072060f62b5cb56c7d6cadac1668f1347caa11621bf2b. 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/FR9W11503183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca9bdd98eeda489561b0037f5f4ba90c0be4649f56da64a2de0c771a14a2f03. 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/FR9W11503184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08a150d4ec5e5ac3a9c175f5ee27dc49ac1ca5da9ebd4166aa15152eb22011e. 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/FR9W11503185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6943b367fe01a53cfe69dbed572a2997fdf0119a3545fe0aad403a9f113634ff. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W11503591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb2804c432864a62be3ddfdb8d9f59e6f32975a58bbacc380e6f127eb71b8bf. 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/FR9W11520154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dde514ceb354a80c2d129ea1b6252e0e5124c1fe906b93cadc9cd6dd7ac550. 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/FR9W11520151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6d6dcf5a2a672580d5bea4ce5eec9920023eb3580706d35b4f107b564e6c97. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/FR9W11520152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d068485a9ed39397456debea19b7fd21dd466901cd09a8a90d07ec2f564450a. 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/FR9W11520153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6795357c19aad6d89a3501a612d3284e307a0072c441b1590ef7149e9a8814. 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/FR9W11521168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f319d50b18135a2755d245243586d7525ddefff677e0d3eb6beac7107546356. 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/FR9W11615885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2de72873bb702e99510c7c636b572d838a9ab8ad3e1d5ef6672ca776fe6aac7. 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/FR9W11615889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0add6e8dac4ef02190d4f230006e3763e703e849153a1c467c44b3032a9b259d. 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/FR9W11615888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ef933662a3c1f539e0fafcf9826171aa11786bed54ddac1473ca00c903ff3d. 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/FR9W11615886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe953e5daf55621aedbf51106e14156b030ca38805a72cbd7501e9f6299ae6573. 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/FR9W11615884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124ecc40fc10af42541513521f3da01e8f119decb138856a838fa44b203b8ec7. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:57:18Z), 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/FR9W11615887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88f2aeb118d629d595c073c4bcae1f70e0c97a742f69195f465ad58a05710d1. 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/FR9Z62400466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc22630409ef95c99a04db6919f91313995c4373f964034012f88e5ce52a4f6. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR9Z62500438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08a150d4ec5e5ac3a9c175f5ee27dc49ac1ca5da9ebd4166aa15152eb22011e. 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/FR9W11503185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e3e82a651a7dacf6b54e8e8dd71381c362a23e6546ff6837a878935ed22597. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W11514223.