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 0xa281330f8242c59fe6b44509f8e7251b3a064c04f83bd5da8c2615024634483b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aab29ac7-5803-45bf-a240-7f9960112605.json and https://artists.proofprofile.net/proofs/artist/aab29ac7-5803-45bf-a240-7f9960112605.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 0x614e49c4f84b2faa95d8fa45ffc8d3b65383b75235e194b83049e828c894589e. 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/USSM11603447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f025f9565e46430d672b1485b0ebf67e4926202964b7a6d00e12260023d6cb. 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/USSM11603444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfde7e609012abe83523281f3e46f4febd4a35e6c5b45bcf40655789f80e01e. 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/USSM11603455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0e3bb42596fe83ab1445d53fe89c87cd14ce03f45fbab2ac6575208fd5d2fe. 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/USSM11603443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87311e71f8eb4b0d510092d73d1505c19e59d22ce3d5975bd78e0530724d186f. 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/USSM11603450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0df41346972890a57e5e9c4f2e4c14a3d44fe5ee143478c147272334e7dd90f. 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/USSM11603452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdf5b5d7f92f312e2637b87f563839a1a37bcdd561120ba3345dd8503a9e8d3. 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/USSM11603456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8982138418c01e10852515380d4d6df65b596c0dd5f433e592c2e830929554c8. 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/USSM11603441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8982138418c01e10852515380d4d6df65b596c0dd5f433e592c2e830929554c8. 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/USSM11603441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f025f9565e46430d672b1485b0ebf67e4926202964b7a6d00e12260023d6cb. 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/USSM11603444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0e3bb42596fe83ab1445d53fe89c87cd14ce03f45fbab2ac6575208fd5d2fe. 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/USSM11603443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6e20e6ea135bbc71eac6acb704e80814334dad67f10be731a3c9924f2af21e. 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/USSM11603442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5572833230406577e5ba6a21da601f1a5623e6a683b489223bc9f8fce63191. 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/USSM11603445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31526be5a8c227d3639272fa6b9bca4d2874269506d927a7e609c3ee9508f05. 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/USSM11603446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614e49c4f84b2faa95d8fa45ffc8d3b65383b75235e194b83049e828c894589e. 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/USSM11603447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6905b751f136b930219aa671cc29b58b6d357ac376c21901a60e152b0eda226d. 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/USSM11603449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87311e71f8eb4b0d510092d73d1505c19e59d22ce3d5975bd78e0530724d186f. 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/USSM11603450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0df41346972890a57e5e9c4f2e4c14a3d44fe5ee143478c147272334e7dd90f. 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/USSM11603452.