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 0x430883969341c6fb0f0bf59bfa8059e8f0eaeaba59a37ab82ea3cc496c417e12. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e4ce4ad-e494-4edd-b9b2-6eec6446d414.json and https://artists.proofprofile.net/proofs/artist/8e4ce4ad-e494-4edd-b9b2-6eec6446d414.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 0xf1967afc285fcb0e09024884fb68782c4839301ae8c1af3167aafa2e254f55d0. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZGLM1995269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66e0f10250c0829e1bd5e7d0947a84808c937f870f0c8aa8aec8a9ee6d28a95. 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/QZGLM2104915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6775f361284074a80d0a632c0f983bba0f87dcc298ab68db648563d93492b00e. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:23:14Z), 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/QZHZ62103789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdbd7f9e3b3a9d084c31ca4def9943dff1185fb9f9162152d067dbd03e309fc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNJZ2105993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c584c3ea88f41551009103fb437b43ff70df998d91e8860b1c06027e7668895. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZGLM2210670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce78268652275ca56c63226009cf09fa336102bd11788d98d3a6aed7e96a889f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:06:25Z), 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/QZGLM2278332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56e984ac21112c6290367af751c77925a0e9f4fd1cbd94fb16c0be6919d4733. 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/QZHZ32250127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acb2bc76b4073f3e812c071932f33faae2cb8ef8a1fde05f70b1f143f88db1c. 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/QZ5AB2332844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9add336bce13fbc5ea3e7dd1de1815f133c3b707ba6cddeba1379c5bde00c615. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZTAX2312750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdeb0567b50589fe30f64cbc883591f31cfe9063998561463b45057004a013e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAX2312751.
Hasta La Muerte Siempre Fiel El Chaparro
Seguimos Laborando (El Kalifas y El Bola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9d15d6a8aa58aabe3f5cb40fe42365c81a6f5490a3b52a60dabbe1cf4ac9aa. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZDA42457664.
Hacer Feria es mi Deporte (Beto Villarreal v2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a689cec5f911c1c975475129cff0decae79f8f69f8c915f209e16b2d10aa229. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USE7D2400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9e75f563fcf776a76d6a4066f8a3f3bdd4b93c2e1b8c6c5779ec55d82a81a6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:49:30Z), 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/USE7D2500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a689cec5f911c1c975475129cff0decae79f8f69f8c915f209e16b2d10aa229. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USE7D2400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e61e4712a7bbb42acc4bf901aeb97a2425f7490fdba0f1ece9e872ecd9ec7c0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:39:13Z), 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/USE7D2500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9e75f563fcf776a76d6a4066f8a3f3bdd4b93c2e1b8c6c5779ec55d82a81a6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USE7D2500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509f86219757d6e624a68497354a17c6886395d539f528894e3ca8da01dc9efd. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USE7D2500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aee1a9c7285e3d89c4846bc2784959f6d72efd323ae24669a23f927473a8c1. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:07:33Z), 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/USE7D2500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd07195645f583d9d88a24709e63cfb83d07ed3f53a3e0e1c08ed2387c3c2c4f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USE7D2500144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0205cca35344f7c76fdf734e96509733bb54df7e3d3ce6467620b7535570f382. 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/USE7D2500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e831b53c8c96e2259885889c5c9ba16bc427217225d4499dc49657a909456a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:46:16Z), 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/USE7D2500145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe027c644b2a666ea602d863f40b3d83caba7e793537a2722c8b8f6f51d87d0d3. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:44Z), 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/USE7D2500147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbf9816172306af3235b4b92930af6076c81bd49401ac8b57aadf42eba47700. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFR2530635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb14593e843c8a3ad1b36a565647b0723a5dd35e45e6909bae9bc91b2a196405. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZZ7N2551912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8af59b5f42575cb3ebd5804a46cea752a93210242f81649365f8d0688583c66. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZZ7S2529899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4133495b302eaf527179a73266165a34d4fd83b97fb085a95923056573afd5bc. 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/QT3EY2540438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cb71579e72ce2e45decc88b6ee9e7d8ef3a73b67648f461d9df61d771d0d17. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QT3FC2563560.