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 0xb38904873130e76d1c8cf426deb045a3e33d29d343ecd0a0747a6c3d841da3aa. 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/ff15d101-3713-4422-a561-9474c635557a.json and https://artists.proofprofile.net/proofs/artist/ff15d101-3713-4422-a561-9474c635557a.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 0xfb39086554a2a25c6a6f4514372d9079d5bed1eea1c76a9e87f858f6b774e939. 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/QM6P41480967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcddc1662b6c8ee0829e26cfc709b27823e543110f3cd27ba344bbd8346f9d3. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QM6P41480968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d029380c098f5f108f0d40111e7f6effd730527df5a606059429eb88ee888b. 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/QM6P41480970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c71aa9e2638e9518e1b5d70745d129fb683ab39a897b69b22dfd3d7ba6862e9. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QM6P41480971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569ccf2119a907b339d4834a3d5da81e8fd9e16ee6626c089663217b340cd3a3. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/QM6P41480972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0566a46a84bcf104596ee3a158dd71816faf70e609bf132eb9c5523354c0bf05. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QM6P41480973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe700f0ce81cdd83fa172d19fce412214f50fc562b3389ce11f48f05d3204d907. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES71G1707274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3f712e7463f95f45c09204bb456d4abd64ccabdf6c6d8c6b942b222481e134. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ES71G1707279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280573363b67d4eb1bbb298af77f263197afbe9b7525811befbb58c0ed79aa10. 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/ES71G1707281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89548752043d972a93185ceb07dd01f74160cc00a1fefcd76046f946a18ebdf3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ES71G1707283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7a23ac2765fd4ae0984b1ec25e73ed54e19ee37a13d1f215f4e7fd0ca13bb6. 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/ES5621904505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442ad22648d4b202ec0a90ac8795969897a47c0fae60223993ed16b15b4fb6ad. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/ES5621904508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7febaeaae46008794981f34a9d1d4f86d72348ee01a8b8a9865085b7668c66. 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/ES5621904510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043dfa90ee52939a46178a1c17ffb86b4b0f6b9c5ba06bae68589451a85ba174. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/ES5621904502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a8af247738549412b9d38c026fed8b9f4779b98936ae69ac5e492910d662a8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/ES5621904193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2542655fe0eeab99d03d174224c59444b1b5e3646aab40c24bfd814eb85ecac3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES5621904503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0fcfd5e94026ac8f37172fe8dc277fedf443888aefc8fa484d3cd36ffa4c94. 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/ES5621904504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7a23ac2765fd4ae0984b1ec25e73ed54e19ee37a13d1f215f4e7fd0ca13bb6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ES5621904505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ff3a64be49bd9fc3fab270a347e2d6369fd8c5dabbdb6933bcca47b502cdbc. 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/ES5621904506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbab843327549ee94091bb70f8e652e923a7f9dde2f0335c5d6f046ddb93de66. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/ES5621904507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442ad22648d4b202ec0a90ac8795969897a47c0fae60223993ed16b15b4fb6ad. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ES5621904508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba04a2a78778f13a0b8552878d3abaebca121c243ca74d5a18e2aff7e15c3f37. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/ES5621904509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7febaeaae46008794981f34a9d1d4f86d72348ee01a8b8a9865085b7668c66. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5621904510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202a95ed9490d40fe5273cc76b12b2025614e7502d63f9974e546c9f7b0032fa. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES5621904511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d834d3a6564ff4b4f346ca965ec8af18029dd7f8e8167ee1aadb1ea9a381ec. 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/ES8242071107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d834d3a6564ff4b4f346ca965ec8af18029dd7f8e8167ee1aadb1ea9a381ec. 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/ES8242071107.
¡¡Stay Oz!! Hasta Que el Cuerpo Aguante: Tributo a Mago de Oz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038878396c125f496640de24601a7d87a694fa419b43dc1b95c90ab226d19d1e. 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/ES71G1830625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c86bb2c8732ac2422ddb5acaea4a914a504b99661e5174c17615eac14889e74. 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/ES8241922102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f63efba372a211ad125c117c2ba7566c499817c2f3f54c59e34b1672888548. 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/ES8241922108.