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 0xa142d92205924bc8f8488f02707a4858d60ce8c548843c727dcd087430fa9205. 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/18344cbc-6760-4778-9d1e-968479ce0063.json and https://artists.proofprofile.net/proofs/artist/18344cbc-6760-4778-9d1e-968479ce0063.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 0x14fc346951d2390829758225de51078f9a1e7662e5107fd7d5df9147b5ade2c5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:30:29Z), 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/PEBC21002010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdedc40eac5f92f2ab7bc91d63f1ee12ca77c7aecbbdce268283be9b50b15d3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:04:20Z), 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/PEBC21002005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fae4d39f5db361fedd873c57e16c9cedf6b5c73c87040cba91fe0cc80145cb. 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/PEBC21002007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f1374063ed2f80d29a5d77dc1494d5736a654f9f030e9c6e1bc35666c8cc7e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:02:22Z), 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/PEBC21503001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83735d8b32ad618501c4483cbe7ccadfc200bd974a094df2d4c1238e510bc3ef. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/PEBC21503005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7359447f6ec3756109cf29532fbeffe395eacacb3be4d80434022fb082918a28. 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/PEBC21503006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ea6b677c20f13c43d72633cfd1faae80b286c2b214bc88f95c47f53debaf8a. 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/PEBC21503008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e19cc303a7ffe9564ce2dfb307764cdbb5dd69877727a2df13c0492db1b8ab7. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/PEBC21503014.
PLAYLIZT Presenta: Barrio Calavera (En Vivo)
Nunca Te Haría Daño: Tributo a Jorge González
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c228e7ad03a7b60240caf8f4ad3ddc3d8ed4e8750a2feea919bdad73109bd85. 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/QZNJY2481512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a46a822b7a4c13adb6ac5bedcd91deb4b8bc5ba0dffd3cf4b03acc7c7f0368. 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/QZW9K2411042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d8fc06d5e7d92b76e7758211a65150d630fd5288d474a564915a67b9ca5c66. 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/QZW9K2411049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f01c51df67634ba2723d4893e2a49b0b470af0b75068dfbbbf3ce56e480845. 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/QZW9K2411045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bb571e6888268fd93df6be96e2db4ae177ec8fa85daad6161a5b4a319daa13. 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/QZW9K2411041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c40d961225427b1073935d1adfa0453fa720d4bc0fc0932ae5380e64fe94eb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZW9K2411043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec66ba94c1d50e287866a98f208ecf2acf48dc12bf46282fc12697bd542d224a. 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/QZW9K2411048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bc3aa21b03a55a589ade3768bf2719d1249198269bbe02e7c61cf947ed7c58. 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/QZW9K2411047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842ea03ac46220cc66d6936a33403dd209683d6a870befb29a8bdcd3c91a2b5d. 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/QZW9K2411046.