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 0x877de968e5df96238574bfd9c13ff90fbcb047633744a20f18f605bd5217f3fe. 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/2ea0d058-48c6-4d23-b24c-afb01a18bd31.json and https://artists.proofprofile.net/proofs/artist/2ea0d058-48c6-4d23-b24c-afb01a18bd31.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 0xc8ae5a357f47966b3ed33079f491720903ded085c0783701ea42ddd6508f3450. 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/QZSYP2322937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ff16f29ff85f969b62f6b558df263de2c757d92070a7bab909dc67895441c0. 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/TCAES2064360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec2a6bc48acfdf3928aa93fd4932fd04dde05e15f40b3d98545d43db15b522e. 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/QZQAY2302618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860205924c7f349b43816b61ed827601c33eb19608a0bd3616485e63fea8082a. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZQAY2369027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf028f8fe53ae7bc1052a063d928046088f03aeb8c906ce8241ed3ee3220b7cc2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES71G2042518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a2cf456d8547780a25ccdc871741d46822420efe09e11ee695eb8bc65428cb. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZGLM2422487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8581325bb3aa1bf527a554d74067af936954d6f3390903039fc50da593fa221. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES71G2042345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64584f8f5c616151cde6dc3399195e188db3e445bffd31854212cac7e63c119f. 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/ES71G2042346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee9af750f23e810467b912f8d1517d77bfb326c4ec42cdd8ba32c673f55415a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ES71G2042349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4050ca26fa6e84ede5f419515fe556bf4eb24b57ede559e1306aaa947c04aaa. 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/ES71G2042352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f30ddd7e43e5dc9152b1b537795dd6445805af44afb36a82811ef5297ce390e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES71G2042356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fa99b18c2b1b273a1af1b8669292f1341390a7c5eea5464999d705fbc3398b. 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/ES71G2044076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64e37dd3829b8cf17e576c07bbda898a672ee228fce3185740979f5195e47ba. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ES71G2044078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09244e134db0542010a63bf8902378d19e4a887e91c4f53ae432178abc6d1d69. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/ES71G2044081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93811a7d9af553876f9ea47a85f26a8dd12d2afbbde2483781e550e4a373fa6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES71G2044082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abd6960021c24dcba1c8646d4eeb2dec51ba3f1c2bd8df8216cce59e3be148e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ES71G2044083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f7a1db2c5656a2256a2daa794d417bfe32d0971a8e42f17ec54e5db7245d05. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/ES71G2042348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfc6cb319003b5abbfea30dfe54238581676ad0585e60f1c7da546b095569f5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ES71G2042350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08d13623cba321f30366e86d80640d72759ba097b2433649430591bc079076b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES71G2042353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fb534acd99a3d44f49f6a6a3ff1727393db92855042aa221222010882bf128. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/ES71G2042354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56a05c3bc0b3cb7a638f09b17200d07b3db618c07096f49204e8d668b9145d5. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/ES71G2042355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a15232ae12e1620504ed25bc0695a95ddca8594e54240774fc35fc6a316003a. 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/ES71G2042357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb4a8aa60a31d3aff1b2da0b4c638791a8ebf498ba034df79ce23124746b6ca. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES71G2042358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0076e8cc211c0dde704354b4f00f0093ec9ea682d917521dd19f18cd5d0af9. 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/ES71G2042501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17006b4fcc2220a2ba107b5e0e4f2d4f29e85b89cb67df0af481ce5a915fd21. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ES71G2042503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d75997cb71b192744b63599408f56c60e0ec8ad5dd7c195e8966da637e727e9. 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/ES71G2042507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424cc8cfb30d9c6b64b0c0601e236aead45e4ca964691600e03c199aff8a1ec9. Chain 2 (Bitcoin): anchored in block 956775 (2026-07-05T10:41:06Z), 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/ES71G2042514.
Fiesta Mix 3.0 Cumbias Sensuales de Amor: No Me Arrepiento de Este Amor / el Amor Es Asi / Ven a Mi / No Te Vayas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d6862f6f8acf5846a3caeee6c5d1a016040cf999251fb75d1d76a663e88107. 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/ES71G2057090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9186dd300d54c6189b8873a0048128a379d2fd81252177fcd928ca24e6acdd91. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMFME2198898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfffbf8978dbfa086beed427d36b41f7e85ef404d050aa2027ed241004c7de2b. 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/QMFME2198901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2958c335e89cac27caad75662d65e90480665080315e865aa29a80c6a6e2f1e. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QMFME2198904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944bb60cd8ebfcafe44c2f0fce66c99375ca4cadded180d9e30dec907f4162ba. 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/QMFME2198907.
Cumbia Maestra 2, Concierto Tropical Sinfónico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0952c8eed4175b6d5b8c6f012a327188ce308eb3545fd3433f5b186b7acc6c91. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZZEC2416011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990ebdb00959625df1cbf4e99c159f9e8e46d66dce658925917da228a8b6a52c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZZEC2416012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00e0c7185d0021e9e7f3090437aa10dad5f7265044feb449279e416986908ae. 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/ES71G2047405.