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 0x768135ca1787467aa4db54931d6d9a1124605c89efe0373c42c69cf6f9f10e5f. 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/3ca54374-3183-40cc-9493-38e3ac691551.json and https://artists.proofprofile.net/proofs/artist/3ca54374-3183-40cc-9493-38e3ac691551.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 0xad144eda2d1b50c67c8312eebce4af1806ca4acd19ca4fa508e7da9048203af1. 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/USCGH1491656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f33d7450903ebb261c61b5601804f098f58ce5b0de062fa0d73042b7c2670e. 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/PELL51703024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fea9e55c2b4c6a87c93193f632397a86c21bff2914b2ad45dae0fa4af3e3fab. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/PELL51703027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55f0d5557364b30c11ac19786dac772f94df63a22ddbeda7a8619908b170a15. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:20:54Z), 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/PELL51703026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917739afd9f5b88c9a2c81d728aa4afdf6e80cc2f7c6bcfdc3816048ba0e7e9e. 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/ES71G1861039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce33e9c67d1ba24591292df63a8ad5c6912994e25e73ac8ab958bee6b4863b5. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:39:18Z), 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/ES71G2104006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1113891e0f15b0282942d8493ed590c1b76a3c24edeee5e78a190c5581bf2ab6. 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/ES71G2123673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0220a03b890ed923be3da8681b7085f1ed40d2a9d40c9d9fff6e526fdc8cac. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES71G2123677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d607d9fb0c19b57194fffd73a23f271e2892ee46da5e049c468e559e6b75b7. 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/ES71G2123680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855e540c5ae4d03cc4307b3bd971f259d384c483aa87b1daedb2c3c72404984f. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/ES71G2106030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e491c5861f9495aee5e040e77f66a15b5b82109c01a424d5a90b81ac3df38f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ES71G2106042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a621f4208b1d07c5d64d449754d49ca92238fb54f4553856ac9e978fd745ac0. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:08:40Z), 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/ES71G2123674.
El corazón no engaña a su dueño (ECNEASD)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1b74a5f02c9b401dd4d15594bf8a358de2802f1b0349c089ce6ba9c600c9cb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES71G2307998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef2b8828cfaf18eab7b2835168a84195447045b740f416c91d677528e594fd6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ES71G2320652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1b74a5f02c9b401dd4d15594bf8a358de2802f1b0349c089ce6ba9c600c9cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2307998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78990581c40747fc593f7d8d0acf7bc9be6ebc975179c547bd06f949a76431bf. 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/ES71G2318373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081ada68465f36de2f3ca3fc129a8847f5f81da3eecc50be576017bbde218296. 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/ES71G2314065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6370b5186341fc34884c99d0744d606cb05b7e3a92b8315c22300ffe9439c8a. 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/ES71G2320650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828f4cbbbfe2295024062e45189f9c03dc472f58b4e9de860abfd9de3a00948b. 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/ES71G2318569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eb1f1f3880009c7d9fb63e3ac38fff893e8f40aecd5e2b3eb764cf83aa0eaa. 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/ES71G2319644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef2b8828cfaf18eab7b2835168a84195447045b740f416c91d677528e594fd6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES71G2320652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6155dc01cb3a5d36d62f41c7355eb52799b162373b407e07c4cc741a82ba4a6d. 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/ES71G2403914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279510f76479f86bb1a6f62cdeb679202e8f114c2044d3f5106c50c5620a116b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CLLL21500291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490cb7e143ad769826d8dcc1c9859e0c484bcd06f3aa5d3b5d54fd9e82635d9e. 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/ES71G2415051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fc6f18d104d759345f2aa2a4bdbf8bccc89f3a025d82440e8b66ceb0be3115. 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/PEAM11603004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490cb7e143ad769826d8dcc1c9859e0c484bcd06f3aa5d3b5d54fd9e82635d9e. 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/ES71G2415051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04679eadac58667264731e1a2634b7eefb9cc92a536091f003d3b866b6f265ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2129834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa8398fa62d8488517b366a0397f9cef52558b183766ccdf19bb0cb2f3da4ab. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2431201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33126ffc7f12ab2f240d6d8f0ed9c1121541d7deb843c51b2d79b84a029f5d85. 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/ARQ5T2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6804a1b4a280b16622bb79f3894c412a3e01f69ebc7e696db748e84c2eb5eae9. 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/AR38Z2100004.
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