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 0xa44fbb0555097c6d04687897f3faf076c5e4dddcbf8af49dfe7b36170774883b. 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/afb2d9e3-17f8-4855-9ae9-7acd6448e480.json and https://artists.proofprofile.net/proofs/artist/afb2d9e3-17f8-4855-9ae9-7acd6448e480.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 0x5f056df356d23359c7937629cd9b58f7f58430b2c7a7c91e9ef4c6bb6cd799ad. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USLZJ1431601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cbff63fd0a7c3780c7c699ae60c3dda6b8df8226d4ae930b7aa44a94c14828. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USLZJ1431602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fbbab1d16a89b7f2d5f717df925f6f8d00ae3468d720169251455d48541ae4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USLZJ1431603.
El Bálsamo para los Sabios y los Buenos Perdedores
El bálsamo de los sabios y los buenos perdedores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd03bc7b6985e7467447ae6bc484976cc41a5e54d7d0dab5529fcfa9f089c43. 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/USLZJ1643893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff48426801a623c1504bbdbe425f78e30ce4112ccc810fe8ada91c5013bb0439. 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/USLZJ1643896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983d8447b4bcaab4e87a3cc4dbbe928b538443ca6bfb5d8a068149aac7f10ccd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USLZJ1643895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35abbaf48794d174952d2354242b67a855d93a628c8f77a82710f58ff0ce9c2. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USLZJ1643898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a9e7d234521d8cf969183654ca131a67a46afcbb98d685958776fb38ff1287. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USLZJ1643900.
Diario de Rorschach, 12 de Octubre de 1985
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4091ccce4c5e2383c6fd1584cdcb2c596aaa917b191fb84b81bd44df0881977. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USLZJ1643901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b555a28915863ac7a3784d9c41de254fb6d37d23110e241d90b05686f23943. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/QZ5AB1871992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496d717cc3babb5d921db4d2050f1769b8100ca4ec58bd6d628de159721196aa. 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/USL4R1807378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22c36bae926c82fed820b3bd2997664a759fbb6f7a9157345fa2f5f940a2d82. 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/USHM91885718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c89645413ea246d608e294cac00cdbd0bf628d1fc8bd2b4d60ca4bd72a02c5b. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USDY41984808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd617843c4aaba71c27947a398c825e363e5869e29cec4debf6ac48d701150aa. 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/USDY41984809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bfb2f0447f090ce4d6e4b68e704d0af05dbccd0f32cce56808b9fa9d7804ca. 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/USCGH1964975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a057b29c1e6fe0d645e87b4c007eb6ec4b5cb069392ba4d22110d1066f0db19. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USDY41984810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6ef9bd18a453636749d9603ec6e5e9887946a770cec83b9e9dd03b0d5e88b9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USDY41984811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be1c14df6d55c7c31638c279d9b70a9274d477b9e85c8cdfe325489c1f216bc. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/USDY41984813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c87aca2ecbb81270d4a275b242f3c08bb8209981c961ec44e8b395e4d1d7cc. 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/QZDA52234155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852c0bf337ccef93ea0f56d2bad3ea5835f68fb84b85c4d4b1b1a299ea6faad6. 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/QZHNC2289632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c87aca2ecbb81270d4a275b242f3c08bb8209981c961ec44e8b395e4d1d7cc. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZDA52234155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927d16a538e5aadc1ec32cf1cb41f10d5db37b4affd0a096e351f423e82befa8. 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/QZHN32238724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaca7650f0583ccdb94c1c15532d5816c1590fa6b900955c0d196625f55f912a. 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/QZHNC2289633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea010f62d1d51872d3d449134f9712b5e073371e75d14e548290e23e3cdfbd8. 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/USHM92073437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a59b8a5e0f28e31611f87479c0cd87a19f66a752fda1f6389350e544860a08f. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USHM92070276.