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 0x313cf3b4c6e0d92333d2656077cfe1c2ca7d31ea67a74b2937c2807aaed797e0. 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/9af1b92b-d8ee-459c-ac10-d672aeb4441e.json and https://artists.proofprofile.net/proofs/artist/9af1b92b-d8ee-459c-ac10-d672aeb4441e.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 0xe71c202512a6535fa1cd9f2ec08103fd90f15e0c78a78c9b34de070eaea8a180. 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/CA5KR1053288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562d8baf332742aaa229ed60a5cfb3a3b3345881df4278ce8de5f9e69aa677d4. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T16:01:12Z), 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/CA5KR1053289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5228764b33b966fe0339647f0f1fcbd16e0d22480be11aeed0ab59bd2bdc2932. 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/GBKQU1616675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d5bf6c85b538e2c8cdbdd73b840ceb2b8352d2c9ae35be0b7c780107be6617. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QMD7U1602003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7db0ea541c2d507cb65023d89098b92791f10757561550c7da0acfea85ee79. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QMD7U1702001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b7f5c06361e1dc218da7f460720fa236bc2addaefc1550f4239d5d95a44e84. 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/QZ22B1981870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab9a3053bee2d6d41a0794c0c21cb48ae161609a6a177f1c5039bd65747b864. 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/GB2LD1800790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a1b7debceb15431406b340053358dc1d24bb3bad79a08ef73877d07a2eeeea. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USYBL1801358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa279aec64c8a80e4063c63b3b185a924fdd27fdd8da725ce269828d528ca82ec. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:53Z), 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/QM24S1911315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56a9239e942aa87e3596b41dafb0f4bb5718b85e5cd067959b9e4ec1f42e00e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USYBL1901910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bce1280d1d165cc85680e73377509ad1ec75a6be67b0b546c4ba4754c296818. 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/QZMHN2008286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24217fb8cefdc9d7fe4ce8647853364fcb8f2c6b57d0fdb76f8393444e905cf. 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/QZGWX2122198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4a1e6572ae7dcb04d962185c61aeb37315c8b987f7c9224bb56d9662d47901. 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/QZGWX2184424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5745da261cc8b0ff59441e33e3b042f0263612bb9e3ea26ca7d6f7daed11ee71. 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/NLCK42220260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5b129096f0670fbeb0099a4a7ecce18ed2f35437bbb1815eeec5bd28d60d30. 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/NLCK42226610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126f287e2d11673270761e3ad40e4463bac8a4c0506cf4745b462a444eaf56fb. 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/QZTAT2365141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6de44285ac30cdcf6f7666fafa65eda807dd36c141889408e4209d1d736d4c. 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/GB2LD2410064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05ef6bf46ecdc450c4b813cff40a547e1624bb1571329d11e8b3a4553c03b73. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:24:49Z), 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/GB2LD2410190.
Paper Cranes - EP (High Tea Music Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01e16bd4ca191bd89866bef917905a436dcf5104dd4198f3134c4e83c7f4174. 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/NLCK42416341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ac27d40ae0affe9aa20af213cae929c6b6e9466e93c0237e7679aa74cf109e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBTMZ2501272.
Too Far Gone (Remixes) (feat. Anna Clendening)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d71e6540c23ecfe09689c1e39d454822bda13f1f76c1413c44d999e4a897daa. 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/USRC11902055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55880d14b8ffb816ef46e459e748446b7193b0cf6189801bf7cd4546870649af. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEUM71800543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1f7a8eba45d78b04661abdf531f3f3b6bcc165d23e2c46fe2bacb11a1a85ed. 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/USE831580907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0404249eb085906e0ae7c765cefb00ca8751e7b0015c6e1bd7433d0c66e37bec. 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/USLZJ1452197.