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 0x6b55cc81b8fbdc2bf8bcffe34f2e2890e30ae674266976797d9364a6fd81bd58. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dba719e0-b35e-425b-a8c8-8fefc046ea95.json and https://artists.proofprofile.net/proofs/artist/dba719e0-b35e-425b-a8c8-8fefc046ea95.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 0x08762f8ed19cdef4703ee10c1ddf44cd7824a1b907a08718c6e240ffa2886922. 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/ES09S2000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934ab5e6025f0bafea900d709d7d9dd11ffbcdb2f8b6e62cc010f616dc004f9a. 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/QM4TW2024859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6b64e88a058b672520c6cf6e04cdaba0fefcf1372d34ce5e894febe62dac93. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES09S2000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf493958f1865397a9015c6a98516ed0f67bb1a286f517c29c7fb4ee8a34f2725. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ES09S1500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe503ded870532a67b0a0ccf8acd677aac4e99668a14004a787b3cd0dc42cb422. 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/ES09S1500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe1dd7a9a3fb5077c733315840934e9525b089baf8acdc46e36c9da6a389519. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES09S1500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf87ebb7fdf1f49717fa5e85f16f587433c6f85e1199741cb0d684d1858c4e12. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES09S1500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb87f85d75520ceb7a1db0ee7e9ad79e21e660d321c6d5679aa2dc95a8cbe405. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ES09S1500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364924511be797a0489fdc9dbaa0a776e302b8fb4423ce44d6e6060425cb3f91. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ESA011490180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934ab5e6025f0bafea900d709d7d9dd11ffbcdb2f8b6e62cc010f616dc004f9a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TW2024859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5fc2a5346b5844df52d70a2240040241ca356c18b9e509360111cb40126b99. 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/ES29B1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9ab13022b3eee58702384d48db8d4a1fdaf7fcd0188e5a0942c3f616e7ba01. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES29B1600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6b23d836967f04ad718dff0678d9b2f657eee8d3474c9c3a996cd1c2e199df. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/ES29B1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b04c8a196d9e34bceb2f70466ed2f3784cea21f776f9c541947cc3a6320bcd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES29B1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39417bb62c37f6922ec7b46a6846364e5c2b1d0fbdc7d781134463d971af4b4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES29B1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd4ecb4a41e793bb693df1b8d23ff48873a92f036949c0fe101f822ace8004c. 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/ES29B1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03d8ba0a6cd66e873498757d8e05c2782d541f2ffd5799186dd53c47051395c. 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/ES29B1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb4d871913db5be90699befaec0a160dc7386e541f2209ae5aa18c5c9e9cdb7. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES29B1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada7e05a012c3db5fd40f9ed1fa34753c2cc4cb9c15265c68a2831cc80a649fa. 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/ES29B1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540d260d07814a77db4e5f83bde2ebc5a6c2a1160d3fe662804a2f7db389364c. 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/ES29B1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913cd7eb0af4a29b1c97acdbc5488ae4417dcf1760d3838789e8cf4a0c0b3eab. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES29B1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5813cf05d69af259c73737dffb93e61687fecb1bc772ef01e81e33318062e774. 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/ES29B1600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d30789c1c311106e43d2de0e0ccdcbe19741f6c4ec1feacdbd84976984ae23. 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/ES29B1600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9f84ccf9f10de6d53abdc6fba5037081b13559a8d431fb2c601451ff8d5a4c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES29B1600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33ec88de3ff8bb22688233be8d442e944d83b979a526ac9ab7f15b2964a55bf. 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/ES29B1600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec0bc94a7907689240e88054dd0b44ed17f1a5d49f82d9a47eb80db4e02299e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES29B1600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001ed88092ce1309f9daf32fa1a37281c51b1a72b68a08b6e9ecbe88da09f78b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES29B1600020.
Inercia, el Párpado del Puercoespín (Homenaje a Lagartija Nick)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389d40a2c0b37918e81179b5aa2dc03575029ec001a360ad8b23c509db60e816. 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/ESA011790693.