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 0x6e7c8bb5644c099878c3ae71a14cedf7de164287d00fe630542c05ecbc19e9da. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db9bf6df-bb6e-4a8f-a3dc-55a49997fb2f.json and https://artists.proofprofile.net/proofs/artist/db9bf6df-bb6e-4a8f-a3dc-55a49997fb2f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canciones de cuna para dormir rapido, Vol. 1
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 0xbe504881d1d76567ca82e7a19e6bb95fcb113b09983e7b8f97aab60302e34387. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QT3F32521143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea88f4b4acc04b52fd5ba30706b5f6e9385babfd35eff8009ed2158af219127. 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/QT3F32521144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e025d4d24cc30a8328c319176a9ea7ba1e4fc0c633a147799f82a980876a62. 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/QT3F32521145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14b00559fa06d58e5b01bde2cccdcd040292dc4297f956773c31ec3b89c6144. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QT3F32521146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6551abd94560bca469c3585276d3bbdb36f907d98d2ee52af37d1f56e7dfa091. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT3F32521147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b46f035512d66759ed95cde43c8bb52f7d56ae85920fdf558b20e95bacba77. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QT3F32521148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2726bb52f8389bf9d19329b49b16e49cdb4193498e673af48df3a36f9458ca87. 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/QT3F32521149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1eaf3013cda2e33fc1960990106fc6d6799c5ab1189ff8cdbcd1de62420ac8. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QT3F32521150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcd3f3abae2cd21b54d88f2fffad19e7f0009008792eb6e1f31d69297f17c0e. 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/QT3F32521151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11552284018415e734f50a3152d33d75b78829d2a4d2bce28107ae91c92a8ce. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3F32521152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4d8b5017818a734b6c871b0c8064b96c062075c0c35d179f5fafa253221e88. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT3F32521154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0aac7257c78ed5cef95ec5b29d0d59669622fafa6ca756a1ee8125742f39ff3. 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/QT3F32521155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6d2291094be8675514c205bc932d9760a1879869fd83530e00e92e791c861e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT3F32521156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0d076ef079c7daf3cb313098a45df491acdc628ffc54bc5c4df882a26a8a0d. 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/QT3F32521157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ff53b1529cef4c2b4894b5a3127b8a7363e897683d23e8e21abbf4c99d48e5. 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/QT3F32521158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12090ef57b648f4ef28a018030dc967be183d5e2e73cdce369612f341da1dcff. 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/QT3F32521159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8452364a18066e3e2e28dba1abf988421343bf974c014c867f53986dce0f8fc. 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/QT3F32521160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66062f955e44dff2b6cb3ab89de6a8eb9159d6e17b055e554678d814096ffffc. 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/QT3F32521161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86f90669fadc557d5157290d4020810d8bd3a6a52d74d07badbe293693d9c7d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QT3F32521162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f846a8d75a5270951afe675669ad7d3847dc85e8ae1b779d9a9ccd0a6c2500c. 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/QT3F32521163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025160e9d1b7e371cc61b7becefc03c659787d1df367c598c61c62f7117ada65. 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/QT3F32521164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecd6f60938e36839dde88a44a3f1c369e723c8860f983a2f00436f6e4b7a350. 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/QT3F32521165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898e473952670279015b79cd27d3ee01057c504c53d5504b6d4c5060644eae3a. 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/QT3F32521166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8263fff051a753a56a53e00fe214a272d9a4a971de993936cd6dcf08eb58896. 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/QT3F32521167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479d1979a4e19df4a2f8b04676bc50cecb8f459f044228787dddaa89c29da2e7. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT3F32521168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9288337e379d975f4f899a68fbbbb58b90e1e45df64de78e7f42a0959de577. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QT3F32521169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc7629ea343f3f114b7cd304bd77a38f3466c76ae35846138aa72e326e41024. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT6EA2550847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2caf304480d7717ba090a9827b3576b4c561b634c645bf75aa2debb7ac0aff. 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/QT6EA2550798.