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 0x8a3f169c124d75243cb2fb6378c924457e3483bcab24be5ea6933a349e4f5bad. 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/49f40ce0-cb37-4c40-84b7-c5216c7db1f6.json and https://artists.proofprofile.net/proofs/artist/49f40ce0-cb37-4c40-84b7-c5216c7db1f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
15 Corridos y Rancheras (Remasterizado 2023)
10 Huastecas De Oro (Remasterizado 2023)
12 Cumbias Para Bailar (Remasterizado 2023)
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 0x43a95660d37272bb9c4b586e0e91eb0b49eb592feb8a3e919ee27978b0a4891f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:23:19Z), 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/MX4972300569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7168829043de1e9cac03120a64a8e5940295ea853fb5793ef649ce1d7c45d213. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:03:33Z), 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/QM4TX1871827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cbcdc524ffa55b2d863e435753e51332b328345cc59d670ece4194dd32c3b3. 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/QM4TX1871830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593bce6f7c7efa13990129322e3ced6c0242ec9c22e43d93fb2ca4360ddff79d. 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/QM4TX1871832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb191d7d850e8e277c5ae2b5cf699099fb8ea3a1cda35440245c4b2e9438e3dbb. 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/QM4TX1871836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74d7dfbe77a3d7d753f3d50a49cd6b81add17e51a28ae7a5ddcdcd07b64f7f7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM4TX1871837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd34c378345c238518868bb142b4a7674df7063e4b0feb773e73b1ef1697ff0. 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/QM4TX1871840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac38fb4eac2158eefb992a936cb6c9116eea80967ef8ee77d46235c501e06199. 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/QM4TX1871842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44776c12845f035ee38d2a69614cdcdf7dbd3306b66461ecf0bb70e217654ef. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:07:40Z), 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/QM4TX1871843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abbdea1797180c4f3586467310a610495952b1f9ed5b195da192b8acbec3bed. 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/QM4TX1871844.
20 Puras Buenas: Los Vaqueros de Veracrúz (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa29dd31f49995ee3e5d73bf26522b36e8e4c13f3a0b104393249e59793c10eb. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/MX4971513892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5674e220d0d30d7c978a67e72df4deac3f7ecd03621cfa4339e22816f0ad6b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MX4971513893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c482ca49537b5254c2d360ae9915cead94295a8b54596ec821170706433496. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/MX4971513894.
El Manguito (La Mas Hermosa) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee35ae2dec98bb1a0f08940cdb5932d178b8d4d2b03f8e04dd6c6b6684d7065. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MX4971513895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5aea20e9edc738554497ba0e7b85e772a6a6cf7cc10fc38084fb0e3c962e817. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/MX4971513896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e75d759d17901f1a192dc87a96974771ed0c2dae017747ec818d8f1f2b0c41. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/MX4971513897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc425806399b87d3fb8bb775ea9778ebcf8dc8fe5c0fdb3eb7ddbbb81d61de723. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MX4971513898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b99f3c25e7de298c220f717aeda66e626e560cca8220464618b139a712cf561. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/MX4971513899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2f48ddc75a4ea5f6901537271f420343b97e5b194ffd9f77b1b17b1e33553b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/MX4971513906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e7baa46c006802bb444a094dbf15b613d81ee9cf52511635a0b7e4d029c1fc. 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/MX4971513908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608d443de611123b572ca6d24ddb9ad3fafbcadd50996f27713be92b6d789e58. 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/MX4971513909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefabb30f6421e2cd37a1060d326fa94248f95040601184e63414eeb3c0377c10. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MX4971513910.