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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33457b0fde06fda5dd30fa2019f87474e9d4bc17c43d282b0223e46c6fce6e66. 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/8be71515-6b8e-4b34-84e8-597d49d63e9a.json and https://artists.proofprofile.net/proofs/artist/8be71515-6b8e-4b34-84e8-597d49d63e9a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07e433514439731e12faffc52992b7f8aa0ca8f36d0842a5c525f273715f904. 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/CLNV22000467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2192fe32d3ee465525a75f3fdb9d6f6e880d7fecbce46c298aaa35a66234b81. 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/ES71G2312247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf680d5f45150fd76f3ad8dcd70137535c54682c4663ade6f481f759cb2e62c8d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES71G2312238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3378fe004749cd149ef540f67c3cc8641de1997d5957d5e6bf211cae0eb4b065. 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/ES71G2312250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe470198f26f6b19f2fbad4e355e89f09990fe549c756aefcd1e6b5f2757cd0bb. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/ES71G2300567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7885c51110ac9116c63181521d091d3518515c415012943abcc415d29811d7a. 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/ES71G2312240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5bfa9932e9acb56fe10fe5c27ddbd2880e448aeaba33a9e0d51301ed64ac53. 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/ES71G2312251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d96263c155ea71213ded8cc83d8e5d5963129989c8ad60396fb6531b5c8135f. 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/ES71G2312252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcac52e47583b1b9bc7a442dad0d2c09debbb96f0af5a534a493ab076eb050b. 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/ES71G2312253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef674542266be92014010c33999698196a51031d2633212ef9320adb5cf2501. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2312246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b33ee3e827732447b5b415b85ddb49a5c52965473837b192ab10399393c887. 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/ES71G2312248.
En el Centro de la Fiesta Está el Vacío, Pero en el Centro del Vacío Hay Otra Fiesta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27ded4ebc132e512ca003beb2ae60008be4802dda4a8a814d18cece6fb2cf16. 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/CLNV21700393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bcc1f1dea62f5f9b7a654e9e11618ec8a89c2c014e8da6fd68d89bdd37c7e6. 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/CLNV21800403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824dac766862c7d27febf01969c57436c123628d5b59454ea9af7e08544d60e2. 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/CLNV21800405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33310a5b0a61372206ce4540375e74981313b97b76925bb62f1fe01c8bc69389. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CLNV21800406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7c9facb7c78e1a8d37fa16045e9b9d21a123cc80a72f0e7a22a1e5358e2d5e. 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/CLNV21800408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c10df955e04413cf103331fc91495b88ca2c1991e147707cbcd28e923e7859. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/CLNV21800409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41e8aff85762035f8c76a1f27a9febf1ad6416053d8603fb107f725950f0ab8. 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/QMWGS1100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bb94c394011d031b2f8033c25dc0fd8f67d233d38357ab8e68cfd32ecda384. 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/QMWGS1100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58fd2589ddf24d30808f1778368bc9746f177f0e7a939b6639f948d4aa16a7e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMWGS1100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e1b6c926362f5cf186782d737cab5bc706a24e1a3bbab1c0735d1ff88b850c. 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/QMWGS1100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b43fe144c812a533ab80ab9e01408b792f87d8f6b6b66861a115a23679e9e88. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMWGS1100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82441a77abb53352d061f085cb54a5d668fca82a0cbbdbfd9818652f72979e3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMWGS1100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89856148f43a3391fb1048eb43b50052d01bd44ce122b1fde05731cd4d6ff80. 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/QMWGS1100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd325500895e101c4ad09195e9d3d2f627133949570db1b16e25733b9a69a4497. 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/QMWGS1100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfca26ded8b77b6d02c64a261a2651dc7ae76066f384101bcbf71ab73ba2683b. 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/QMWGS1100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5d50ab3a323f3df5a3238c3358dd23df052cc24469b86248b01de291adb5e3. 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/QMWGS1100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22d039f3560acc4c21785ff699c3d74e975c5cb45f24bf3d094caac2acfb8b4. 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/QMWGS1100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee64d9159fd95e85bbc30159628b5496b20db3e234ead1e9546b54f505e9b700. 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/QMWGS1100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97987aab44fa5ba39d69a79360129c50a443e5d2e03e099053e661c5f84e6a78. 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/QMWGS1100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b9cf97fc8c79e9bdad043480fe70c5e9878f232e6c1a21bc651d72b221c7ae. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMWGS1100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7133d59f5db32147cc76401b362f85b40e6bdf350b61052fff26499316b6b69. 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/QMWGS1100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6007da7dc652320ad36f95a3a1ba3815d5b5a505555e4ff9c97f8dbda8567b0c. 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/QMWGS1100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d748af304bc13024bcebe753ca2128a2e32cdb98b9d5bc2528ff9837475570. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBWUL2478171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f3ad0ccc1672ebf4ae7c49436e65bdd6e291aeaa53171290c1c40e0ce28809. 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/ES71G2404940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbea0f632dee25834d6de4c312353f7f30bc461e982225f4feec89f75ee800f6. 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/ES71G2404939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a9b21e6b2dd616bbff6b1a133d519b3a2edf1d4d2ff3d0d239276e5e64bd9f. 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/ES71G2316579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe470198f26f6b19f2fbad4e355e89f09990fe549c756aefcd1e6b5f2757cd0bb. 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/ES71G2300567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3ffaa3353897d55a20213340d9b65f38da7c25583dbf64b5ad737bbb462c59. 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/ES71G2234515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bcc1f1dea62f5f9b7a654e9e11618ec8a89c2c014e8da6fd68d89bdd37c7e6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CLNV21800403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27ded4ebc132e512ca003beb2ae60008be4802dda4a8a814d18cece6fb2cf16. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CLNV21700393.