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 0x94d08a578d1be2f1ff6046238cb0fa54a6fb08fdc48593e0579b19238fa77e0e. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02dc1e57-592a-4d33-9744-82999c802898.json and https://artists.proofprofile.net/proofs/artist/02dc1e57-592a-4d33-9744-82999c802898.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 0xe549e057d3d22ea4fdb08ec039da24fea6e83ead5fc0f15562ca6b2bf76ae42e. 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/DEY472479836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861d3875c3bc5623c2c737537bc5ad15d2dd13775efead85b6e263ecd3c931ae. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEY472479838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf9d274b6005b921d72820f9aa1f83b542241e210a8e8cab6120c748c23ab2b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEY472479831.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fad67e29214357ca2970d2d558ce1811e058aca198ecf2ea1ad2fae523d33b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEY472479832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b522cb437d047864e493c2a6d2805ab1ae309cab1a84c2021ebe90af25503c. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DEY472479833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f87d48516b76a7426cf9c00fd813c37c2dae3862a3cdff79262dfc30650bef3. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEY472479834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e570b5b0c9a24fca0569b66babb21430283adeab5ae6024fc092b9ad5403837. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEY472479835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6481af4873d9ee32e76e84f83ab32c5b1f3806b832da694ac451b55f017218a8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEY472479840.
Her Swag (Daniel Fagerström Magix Varispeed Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ade6ad5cf40e6777c63ac100642dc4d0204de1973a886dc5ac1fc6e5a0bcda. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/DEY472576009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29ec68f28d0c8e0f2b4dad007b930d9bb44368e06c57143386bf96e64e51a7f. 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/DEY472575085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a0af6c312d48148bef286ce421b4ce47bbd805edf687d5d5d2d7d11163fba0. 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/DEY472570412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1fad365863d6cc46a5a6f72cde357d56d71d9b1476b4d173262a5220e141a5. 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/DEL021870022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60d9759c5c7e34fcbdf1b402531b08a858a79d712b0b71cdd5a4dcf8b01b109. 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/DEY470938879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61b7cc2570404162d4248a7003e747630fc65d14eedb0806fc5613d73b2fdd6. 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/GBKQU2365298.
Turntables on the Hudson Lunar New Year 4707
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f494817e3f3c75af447c5ce5bd32f2b4f9d3e4a7c0b4809d5602a98deef13c. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USCCW0810154.
Sun Children - Pablo Sanchez Hip Hop Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54877eb24dbca74b449f632205b07f32127df6f520dca642c9c4d6ea3d0b24da. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USESL0916111.