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 0x7914918809be4e37b96d8796e7d4978daede23ba27540fc0b330fed27e04d393. 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/18c44e9c-526c-4057-9cd6-60349f00b326.json and https://artists.proofprofile.net/proofs/artist/18c44e9c-526c-4057-9cd6-60349f00b326.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 0xd5bb80ecd099aa1d8537aa1837f62e9cf141d9b22e0fb3f77e7c0c4f8342ed67. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/ES71G1831866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2a42d56a933815bc61bcff1cd256506af6ec7501a7202de844d889e3eb59b4. 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/ES71G1906813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ace7c7a13153a17ed40daec34ca91dd244b1863d41f5cb2932660a823b9dd19. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ES71G1906820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9a4ebb3501b06e995d262d1d1a20f963e1f9d59483153ad63ec62776a7a56f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES71G1906818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd249e1973c84d3e07e5445372d828a4456b20fa1f76c8b74bb18a6df80554e. 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/ES71G2008676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f341fc2184fd624ab2500de78324967050a3c6fc1f7c11cb27057eacced2bf. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ES71G2141483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf021d5d406b59442da54db124aee4a60185703a167783aa06239a031c3f5ab. 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/ES71G2156076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e7c671dbee9f2423a8a68b995a07751416b2ae0be499c5149b121ec6f22611. 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/ES71G2147253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dd63a27438e51c6fa14999e5f023413201cedd357d737713ac677bf1b521ac. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ES71G2202768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3334e26a4fe455e6409fbf607dc90d717483622e413d0bbfdc6aa3c0e84764af. 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/ES71G2202772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa019c031254c1873f9572a6b3a324996b0c43aafc5c98a517d5917c2d0aa00f9. 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/ES71G2202774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23dcd5723da5e68099021404316bb6982f517f53c84ccdddc1e6d1abbac915a. 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/ES71G2152051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fcfae0585ef30fd663f52fd06f9f038e31b0c01d9e1a3430f0b434d90c873c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ES71G2202771.
Al Mirar (Mayo, Oddliquor & Tuiste Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3202cb71c9760891fae6cadc5295ce909da7241ea28beda1aba52cd6179b9cfe. 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/ES71G2237104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bed1d87c99a95be857429efa6b7b9b47c095dc7e26a980877c92428c982524. 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/ES71G2237105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea043653502d9eb82208af8f08eba1139d8118d348ef9fcae9a15a35a94fc0cf. 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/ES71G2237106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc46254f68bbe1ba726e5b5b2973cec56d440fd56420dbec07ea15f9704bc57. 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/ES71G2237107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17e63f080083ef34743ec317f91233a71bb3485b1257882ee4ea48fc3abdaa4. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/ES71G2237108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55e9558b6a98e44366c19dc0443b809bdb525a964127e978f91d08abf939174. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES71G2237109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b52b9ec5217c4df07b1714725b8d94ba3aad94d9623f78047ddd6a7f6621a0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES71G2237110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4e9c0b8a366bda203882c2b34b7baeff55e58bf2f2d9afbe401ed5759b7c16. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES71G2241924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318fd54cfd980c40d086b46197af66c9a4cf71820aadc959454f0a32f01e4cde. 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/ES71G2315042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f16fc4025153bc49d73ae52b5ead0634c9fc55085a6a490891cbe88901e7265. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ES71G2318395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7092dc63270fc7d94c447a5db422938117003ac5ad0837793329fc079b167ad4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ES71G2333673.