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 0x80ba64f94d80d119deec1a24b1664e209704fa440aa82724f94dfd0f63aac421. 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/13800e52-3733-4299-8557-9c8e25c2f5cb.json and https://artists.proofprofile.net/proofs/artist/13800e52-3733-4299-8557-9c8e25c2f5cb.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 0xe8b5ae55e77e8dedf33b99528b9bdbca1ef75e164071324a1473451e495c15e9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USRN10000394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae16ccd4440c8273fabcddaf7270fafc1222d0240506966b0bf5c6a3c2bc7f6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USRN18800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee17cc0bb913088359150124d83de18ad9a2fc881c06f65c57d7cfec9e88002. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USRN10400373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c4ed4611215560267a7849e544dccc4ab941d88b16c737bcd208b198f7a254. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USRN10400374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fbc20a237a6feb59f257c0e12055f892f5674af97ba5ccc5f137e1de31e279. 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/USRN10400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe81743eb8ab7fddb57450702170a040220e837de7c59444e7544e27b3615b4b. 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/USRN18800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fbe511ccd9d7b10860381d235c3e109d65b9821ff9fbb2031498544a8abbd9. 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/USRN10200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00409e43d0721aa38da8de6d8d51d4c8d96766574ffd2436ecd2dcc36ba3f1a8. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USRN18600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fe9787fc02f60b750c08340db32f81bfec7121795ecbd7cbb06252ec9ea298. 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/USRN10200158.
Greatest Hits--"Songs from an Aging Sex Bomb"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49076933cba61208bfb229f337d351de0101f3642b39eefb52c2ffece4a56119. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USBN10200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dee27955c715d98d2e91672dd73be14f15c96ee7bdcf00c2c59fc9cac20fc7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USRN10400372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea399e94024308720e10615e3df292e266dcad0217b3e7773f3a14bbe74f686d. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T08:13:46Z), 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/USRN19000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1310f4081b9d3b27076e3d198106e1e6d6b02f604c8f234ce738f2f19c717f. 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/USRN10400370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9c8f4246125b1b7d6932af6dd64f3b261f7f5cbc0b845af57c33eadcd06766. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USRN10400368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd319444bf4fe366863142822b52c59cbb614bdb56e292d99aedd219c87b484. 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/USBN10200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea399e94024308720e10615e3df292e266dcad0217b3e7773f3a14bbe74f686d. 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/USRN19000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28893bd2d8f78ce76645f53842e78fbc38f12c01e7941ec99f1056667d0f2b88. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USRN10000392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdcb45b4277bb2ab48916e7635f6315f84662450e9120968af9a213739cf671. 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/USRN10000393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee69fcbf390392bd4f794f66600a989e89875b304299d586af5c6658e5c88117. 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/USRN18600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb023eebc3fc78322cef527e9bec605a50f8b4f4e3e712786069d32468df2fd37. 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/USRN18800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317b1024ec6ee39ff1b7f04f250a5ab4f871bb2aaa215b8a3bb6f5c4128a88a7. 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/USRN10000395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08462c8547187cb0c9ca07ae36b1635670b682e8789493244d6fcc9e9ad7d6fb. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USRN18600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d90df40c8aec07e6c7b769d0fc938a71a1069a4586bded087970e437c4c23ec. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USBN19600133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef859e88cc60288abb865246ec51558c1c9d2c7b0267ab5e66bbf08c27c3dab. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USRN18800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc362f247ac320d33d4d852d2591903d881b8a9bf7080e417b76b74a49296fe. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USBN19600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e29263a2d6fe683c77282ffcf105888ae8abe946a7fa16957ebf41ba8444818. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USBN10000184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9eae63f8b1522971534b4c3b6320ce0ac90d6f8f71378d13fa374051b11216. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USBN10000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d90df40c8aec07e6c7b769d0fc938a71a1069a4586bded087970e437c4c23ec. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/USBN19600133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08462c8547187cb0c9ca07ae36b1635670b682e8789493244d6fcc9e9ad7d6fb. 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/USRN18600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb023eebc3fc78322cef527e9bec605a50f8b4f4e3e712786069d32468df2fd37. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USRN18800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f99d08bc659815882511aa0bcd410d6e844844efcd9b15f690b6b9b692e0d8f. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/USBN19600134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff6ef3d6af81b964eb75df3a08b76199157ea5a224b363d17bbfea2a04b28e2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMLPG1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8a11a85dc7a55a824881ee575f0bc44ebfcdafc855119afd774d20de749100. 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/QMLPG1400004.
Baby, It's Cold Outside (with K.T. Oslin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794915453aba61c0e82672627be0d6280bb6b729b36a39c8aa9831acaba20a70. 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/USAR19000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f99d08bc659815882511aa0bcd410d6e844844efcd9b15f690b6b9b692e0d8f. 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/USBN19600134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdec15c2af6162ecc23608717e5fd42777c2fc4f51c416390a50866aabc72353. 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/USRN19400220.