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 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 0x4b8403a70c320b70d7c6725c62f6b3a4767eb3c58a136717b51f8806fbab6e98. 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/e1606c74-de9d-4407-ade9-667fb6a2e3bb.json and https://artists.proofprofile.net/proofs/artist/e1606c74-de9d-4407-ade9-667fb6a2e3bb.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 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 0xb94e1a4475118b077c012fd478f9d94ec45d1d2f52d22b4d03160aa342d3a7db. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEKB71381569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe0639290a6080dee01935185f0d28a6efe013434bf263d357d707336f808de. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBEWA1501600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90465bdba873aa0b4c7041ba0156aba3fde5478212afe80d325cb47a8d420b58. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/GBEWA1501603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de905478461d1feb6a01bd41e7950c03db3ec044b2b67ff4538cda55c95aa4e. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEBE71700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f69faff3336bf40b9d0c61660e3edde5301151c926d6ea5d4381184ffb2ba6. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/DEHM81800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a11c4d8198fb9e2dab8018987fb9889666aadc899189cd39bfaf60e3a00941. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEHM81800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b79dded9e9738e27c92daf0e50c753f3877303434d4977f347b453755f70e91. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/GBJX36116069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda3e53fb25f1326823f5b23fdc551fdc622fa14091b02baf0558cf98eafc07e. 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/US83Z1831878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6ab6106c0b0fd7712c017ce8da62927ae6a94e867e88725fcfd042f4dc83a2. 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/US83Z1831880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4353024774092fcb83d3246d51985ec0619f639457d552ee348435967e5022e6. 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/US83Z1831879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a5ad3f2bb87964f4d00f3c973b53d5835f9ef87c149bd8a182514df32c58a2. 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/US83Z1831881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36cf5f1321f98a73c49864555de4a90abd798e50b161953ace8d76b43795f56. 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/US83Z1908694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937b7202a2b9071b57ab49e63644260fe32df993de1cf1058ad963a56fa56202. 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/DEHM81800602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dcfb93e0ad862c42c5cb52294cfd5b4ff5458281d8e7c3a44f869fe0cbf591. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEHM81800604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd7bef65541eb1aa3cf443aebedb004701af6134504462e0f57ad8415ead42a. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/US83Z1925059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90fd069ac35d428071db0fa0c49af7c537318b3d6424d702b9ea8fb5e11ea83. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/UKSP41900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc5953b7c0d8f36c991654a4f4e77249aea49c9112029bb5dfefa96925912d7. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/UKSP41900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218fd6415208bbc313a425b85f672f6c3802f59a19b2c43d20b322c724825455. 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/US83Z2005231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775dfb07be41ee9c3f6ede4e61bc6582d88c5527c621782fa1b3b47c40201a75. 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/DEU672101473.
I've Made the Bed for You - Francesca Lombardo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00faf685a2a4395d51a760e26c9815bb48022c696b6231db5725a6c0e5cb80a. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEU672101474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f704a8daaed29642736cf07dc520ac1aaccc7d4604670b53dd87b367945a3d. 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/DEU672101475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3065831cfd248d9d66c834e45a9bab3a3eb8c65b02097e74a1ddc4e5279ba949. 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/DEU672101476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a783ae848359c1d6bca8a8278f23af94cafaeb7c508d51edab7af8fed5bd9f. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/DEU672101477.
I've Made the Bed for You (Francesca Lombardo Remix)
I've Made The Bed For You (Francesca Lombardo Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4586fa2e97ac9957700018189b704debd36dd86153261736cfa620fa7f676b3. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/GBJX32378023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9566c1e229939eaf55c80d173d0c5d3b829c95c477e1e58b18a74c2635afd31. 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/GBJX32378024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca60a9a3284cbea5d669747dade81f4c82dcdb3368837da5ec3aed9dca91a153. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/CA5KR2417477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063a06aebb11391450efa65d79e6022239f6bb4ea765e347af1452d7141ae05e. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/CA5KR2479645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2085eed006bdb31a054536d4c4106c98a67f8d623dda38a3d6c4c5ebadf1d91. 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/USAT22401982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cbb3dbe00d867fa897e77735e178d3cbb4a142e24b087ade57a2c4d89135db. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US83Z1660413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcb79508da2b324eed3275f42b6932fc077cc083c92070cf970c58039b9022a. 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/FRX282464462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6875fbb739fb3608d739866754423367d336f6f0fd9b55971206ba8308cc8433. 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/FRX282464463.
Bar 25 Music Presents: Sounds Of Sirin, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c156a1ff8d7ec02358f44892c863a67c269c4cdb896389b2531d6735a85ce6. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEHM81800603.