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 0x5c2b2689fe1b0d10f169f58282b05c699f04e850868fed77eb9d4b4bebe7e14c. 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/cab6d293-5d54-418c-ae66-78e0e9286bbf.json and https://artists.proofprofile.net/proofs/artist/cab6d293-5d54-418c-ae66-78e0e9286bbf.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 0x1b9be769a4f7f66007a37bc611644920a4653af69a57e8ebccb393b43402bcbc. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEZZ42171031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dae338edcc1e63056801c44a6ef3448fea0a0c2df99a636f49d7094a5f9437e. 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/DEZZ42171034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2cb8b34bfd06f79963ed24846ebaff852fc4ab89a203d3d9799b27504e60fb. 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/DEZZ42171036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e3ffd421c4da51f6a9dc66600943e04c08fc3e02bb9ddfdfc99cf70f5d1006. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/DEZZ42171038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec3622de02340dc78458c8228f9cc3b988ff5c525062bfbacf15e723d9e880b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEZZ42171047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f423ad8eacaa0c95d0886f995939f7f648ef131dc3818174738225100012ca. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEZZ42171049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4a39ac2f79f5a7bf21ce7dbb94797b6661e7e24f47d6a7bc42813acc24b7fb. 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/DEZZ42171053.
A mis amigos los niños (cuando tenía 22 días de edad)
Luis Aguilé. Sus Grabaciones En Discos Showman Vol.2 (1968-1974)
Vuelvo a vivir, vuelvo a cantar (remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974426e99fb832b351ddd649c8e897e5a056d264d8340be9e2eed459a6dcfa18. 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/ES6340901361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509feae7050837a0c9fe1c996e41c4092258b1caf5360c9081339d0a0fc5a361. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES6340901341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa7b9d254bbf19e053da77539e76be2a124f25cd8b1699bff0a09c1cba04aee. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/ES6340901371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ba9d2c08e0831be5ca4c54d6e2b4b7ae2b083dfc78a2f336d2624014144388. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ARF040603828.
Luis Aguilé. Todas Sus Canciones Del Verano Vol.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721c6eb44c193aaced1d85a8cefd47eef59343481a793ee72219dc77b927fdc2. 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/ES6340901324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193e5b0d573696e19ee55849bb8b59767eb408b8c4067d5d259dc32fd9d6ffed. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/ES6340901335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6e8e759f52e7bcc31b09f007dbb8c517bf227cc93c6ea95d04b5559126bc27. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/ES6340901337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fe0709c546e5f8ca67ed0025362c3ff4c4479493db2565c0eacecf1513a570. 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/USZZR0911676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6e08d8fa8a8faf22bd816b41dd1fd2dc7aacb607f13a5c257189b30593ca29. 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/QMFMG1304373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882bf7b58659340e6316c7c2141d4b368392b222365bddb7ee66160b9c3524d4. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QMFMG1304380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1797068bbb1d5a1ab198f8994f8cb861040b8408c232b6ddc193316949cef0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QMDA71311933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69b4af28141588f5ff47df4ba56758926cde93552f13edc3b69767fedcafd03. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QMDA71311935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6f735794b9c89d61ef4d16d4822f21587cf1d5f8d07162a4cd11e378631f7a. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QMDA71311939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd124f7105636cf36d9397d07ff2ea9b77cfe3e8fd422f98c66c5a7f41dd9fec. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QMDA71311940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8825f5dd33ae3d0dc7e80194252408abcac71cdfb78d81a7a120a5eab9cd9acd. 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/QMDA71311943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377752137295c3dd016b52865eca894d926a8f1279f5e499b373effd26e376ab. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QMDA71311947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d98d2822f01148ff46f1194c53c5734144686ad4a0b02d920d0263ec501f8e8. 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/QMDA71311949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda9015c0613f02836c586838f9dd8e551323c4893ab78ad6a53824fd2a8714c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QMDA71311963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2533d03f07cc0aadf754052bf0214e4b2bcb561d67125fd32cd1e2e940e1137. 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/USHM22155631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a488adffb04037e5fe8f9efba640360ead75123f3e14e2650e76967ff866a85. 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/ARF100100590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cc723e881a718216f9fae494743f1e0b8aaf871bd0499e661076fce9da74b3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR1928017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe676df461583cfd54d72891e207522c4b46a145a78f0f646ec62d25ad9b5773. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX282215493.