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 0x65d00c24bb83138e907bd2a4172214faa3fe1cb6e996b0dc613d18ee22f47065. 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/fdf7005b-847f-4f08-83ff-808f1ba5b81b.json and https://artists.proofprofile.net/proofs/artist/fdf7005b-847f-4f08-83ff-808f1ba5b81b.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 0x6bf0108674aa9d018f8068d10eb0541a3b77cc9adcdf1bd9206b3af8ce8e1f0b. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:36Z), 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/ARG601010705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8209301b86451bce1a8ed6c9f9b5dadd673d76d1d4b9f6f228c4b9a3c08e03. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ARG601010707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e569815000ef369a335fa49a3fba68bf4f8cb0e772033b7653a3b3c0fd3f0ec. 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/ARG601010708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf5d08167ac41f676c2be86ffc44baa1278515e2cfa31db03ab7b5fc85fa958. 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/ARG601010712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f0272e92296b8983e399c385c70e8035589d0401fb79b9fd97cd9fc599e186. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/ARF149600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c5da122530d122a1e694b75d289cb16a918b227cae7827e36836d75d4cb6f5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ARF149600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb17d01cc568d83d7ba25cc48502b101569c0ffb8de64d818fe669ed0221682. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:56:35Z), 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/ARF149600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31621f4f385611c95b1a9761b5f72c752ee4b40a954ef730fa78789d5d2ee42. 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/ARF149600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cf1f2b6e0e77c3cc5894afad7fb77cfa981003ee979e26e0aa52725b679485. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ARF149600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a48f1a79c782be917e4347fb10423da1e911436ca6ca7c81752072d6874aafe. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/ARF149600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd827a1f35240b311efac585474968d23e32d2403978d9b76c775475fb3281a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ARF149600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162d596c8f60fb51e336a5946845f1897dcaf7fe84cddb70e0f37d5d93c276e0. 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/ARF149600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe471280c833fd57beb2e7aba6d10751475cc463632ad0fbe628cc4918f623378. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:55:40Z), 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/ARF149600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5431ae19787ed6e117597b0ca9a88910c1e3f619f9b3bd9d6ef959fca474301. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:46:08Z), 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/ARF149600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39572e60a170526fb1cd95cb386b4d594c3f418afa2c695a828afb77c1b1813c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:02Z), 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/ARG601010686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5d1f929153a2e4e4191acabdccce3cf709b3b45204065537659422616c34b1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ARG601010688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b45b88af5bfa7c84d7331fadecb988f4f690ce2d5189908d7333c134cf0890. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:10:51Z), 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/ARG601010689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe469855757d8281f22bf1cd9476d61ed3f9ff4a477ff517491b91ec4a74b118. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:58Z), 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/ARG601010697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2d29ced0e7628983c751be796f4070d30a9c965f540747558a5f19f8437c85. 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/ARG601010699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb2b1562f23b3632983ce85641ba6f68ee06efd5eef0ca92b7f2093e87f6fa8. 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/ARG601010664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bf4ae408d1471d2a9ce45071a9ffca2ae48d924d2497ef308e61bb373ec692. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARG601010666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453ff519e7f1e9898c3272313d7b3cfcead472538580901f2479cd0171e0cfb0. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/ARG601010667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b68bea07fe2b73c6e5c55f8df3eebdf5857f288724a2a9d60d4aca52c85be42. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ARG601010672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcae725a7b5edc80ba3b20e0c8122ea8be0d07941126764729e66a9171b33ca. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/ARG601010673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2fd989e9bc4f26036d1a2b88afe6384c229b172a0cab8b14ca7589b533fe67. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ARG601010677.