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 0xfadcead9b7f83c2caff0a7c086a729709b73995777c07bb021fb2967136c83ad. 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/9899447f-d194-43d0-ae18-4eeaeadde40f.json and https://artists.proofprofile.net/proofs/artist/9899447f-d194-43d0-ae18-4eeaeadde40f.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 0x960e7744cc14f443f6cfe341686a356c8f849bf1ef9b719dc03e11598cc595cb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR43D1500241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ce2272769deb7a74f6bb3144e86c59031fc6c86a2ff9ecd13c87b33e6fc9aa. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR43D1500242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5000d139da6b3a3d05010e5c9e235249864fba201a54e5982585409ab96cc8. 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/FR43D1500243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb223bd0d3eeca13af109c6cc69d4240a3c90325e3d9721137757b0808748600. 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/FR43D1500244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baaf0d20feab5df01850c4661eb85d3e494dff442927a968c59f8a55d51e78a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR43D1500245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247faa17b9eaa9d73b644f965b1ab925a21203ecbc4bc4f397154860da87f71f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR43D1500246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceedb514ab5fc7fdd80ebfdfc04bab02d3b5689917b89e5e0ab6b396a2678d64. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/DGA062301567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8a5116da31473f64d0f0b84f1da937502daf7a0f261ea7d28e470dd04828b4. 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/DGA062301569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e626d7032eaca592659efc02bc8824a3fbc5c1268b4cc4cdc6d154dba6c9861. 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/FRX871515658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14601c997ff8243a6ec491d5cfb113d54458b2b289b5fec1686d9f8ad3ad82b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:55Z), 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/FRX871515661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b60b3bb5a6a963fc1552712c56063453ac0950188ea61df75ca497aa6ecdf8b. 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/FRX871515664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a3ac48f4460c9e7543e24763f2c6588e711f8dce0b730b5b5eb5bfbe5ab536. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX871515666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8101b7bb75f48c547a07ee57e503070d408472a9b7bb71437580bd3ee3098733. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FRX871515667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa73086975190deece83b156a34291320c884bb2975a0b1272ef5b579e4838bc. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:31:11Z), 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/QM6P41536291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56afab239c4c970b2284fa0715b3ce9eb970dd1c3e6bf4f7f95242f08b6402b4. 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/QM6P41536536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f13a2a37f4d71e48915d00a732f0a3ef45f8b042e339eec766e742f2a41248. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QM6P41554260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dee34880b1756fe4976b5f0ba58e1a49761c3a0946e964d643d8ac0ed087d0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6P41554263.