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 0x4fb18a2e4b7f7bc59ca5933dd3d03da76a1e6389a6d467c07044d3be24e215e5. 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/8c934039-d760-4329-9d04-6cbed8f3408a.json and https://artists.proofprofile.net/proofs/artist/8c934039-d760-4329-9d04-6cbed8f3408a.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 0x6146ce57b98862633a0498339b1b50f01305bd28780cae94d94aab39a4a86b2c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SE5Q51808762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba15b63a9bb0ecfb6c2c9c5747f7a07952e74632058184d5935d0722391a398. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/SE5Q51804071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6c0b960af7103fecadd50e837bb7714e1808d33eb59ea9c4f533827091ea84. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/SE5Q51808682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e27ab37195ca52b2264a86f114a27093557d1035cadcb5ac98989c5fd712370. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/SE5Q51814784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37186eb8ed7496ec021257a7130d91c5491c21295064299198fce13913abd8b7. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/SE5Q51827229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d54fe7ba6b63b8ca964d64a8f72368b646c309efef4eb24dfce5fbbb2ed7780. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/SE5Q51801700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743def30b0ad7dd66f25ce679cc889a0ae6a6d0d26acbb38dc506ed015def2cf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE5Q51815347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1553575112a114ac260ab36ca75c8da57f4edf2ef14a9afcfbab4e520251fab3. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/SE5Q51823784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a92a1bdb4c7db00c29970212d36ebde178f4927b88086ceaf0aca53883fa79. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/SE5Q51828185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c05dd25a14a5610e2660a20fb218a7399ea1b81054496e4eaa15fb253665cea. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/SE5Q51819373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0818eff0f3e604384e27e5052d48e865a39c559db0daef6765b31c258a75825e. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/SE5Q51801417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce084b0e87b1b35a6094472ffdd2541dcd22fe13ad78c406c539ba73d1e1368. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE5Q51901607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaada2ca4320405f08b1ff50ef258fa1dcf99d02f74f1f0359a9156258210f3e. 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/SE5Q51901187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d4f36775c5a72d94cb453e4fe828a8717d09ea04675d4038d82afbd396652c. 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/SE5Q51901541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb9ba9b499ff6720c412fd8f957313b59861a828ac948ae48a2730756834f97. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SE5Q51900620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0adc40c7a0666a65bd83a8834d03b24e23265a80169f1e8f7aaca2d865b67bf. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/SE5Q51903228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd884722c24dc1c773ae60c279ea38996303485869e24e6782fdbc09d27da79c7. 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/SE5Q51822224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c639f8df4e36a5051bd6ff5f2b0ad9ad3be83c9f18e5400d826db839aa55cc. 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/SE5Q51903465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d465d620fdb8f763f2085159c2ea4095222dee36a088547088b8573f4448daa. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/SE5Q51904085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95476c15895a7e2db7c56b7b281af5ee982f1d4c08cf67e00bc123f060f2db95. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/SE5Q51903636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044e737ef7a2c0607afb7fa556e1f7c025788a7093573b939417d8cacd44f5f1. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/SE5Q52000206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ceaac297524c1b07331df2e157c47edbc89475a6369168b4645b8a378d93fa. 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/SE5Q52000359.
Just like in the Movies - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9167a695fd2d199702be1a72d0143a3a836961519d7151b102d846ab6b5de2bc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SE5Q52000650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3deec3370adc31e65390d91d01a0b88a97b3bd6bebdc3b07b151a7db5025a5e4. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/SE5Q52000665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa63de9a814092343a687e6504913d6c8ab88a2fb037ffc0fe7784c9aa1ccc9. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SE5Q52003949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ece2c57d06aced37bbcd27791cbe57014202e255c3c1ab0fe7092244d8543ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE5Q52100858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8225095ba9d447b0d6d30d3dd38ee4ddf1eec1688ac392c70e7fcdca7ec6064b. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/SE5Q52103899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c58cea6585330392b69c587d6a17aa0510246a3dd12bf2f2ed62aac9238f43. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE5Q52404129.
Epidemic Presents: Crates (Ingrid Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fb2f1ec141067761521fecedf294c8ebdf9d3d37035ef9c5cd4405b1b0ff1c. 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/SE5Q52101270.
Epidemic Presents: Crates (Blanka Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6af360e45e1f0cb637ac2a787b13cb3156b781eab7dc8786e0b02c1e806cf3. 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/SE5Q51816906.