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 0xd3e2c38813bb5180d55cf75b103a828483ed150ee81eec19a1b49a88cc8b7ceb. 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/e3c8627b-e436-49ba-90c8-cd4b697ea91a.json and https://artists.proofprofile.net/proofs/artist/e3c8627b-e436-49ba-90c8-cd4b697ea91a.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 0xdefaeb2582e00d0084d861a20ec1e419f5a65db7eedef3a956517a7e67c537a4. 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/QM7282351697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b9ff574ef9cb6d1c7bb6305121beb70e17e760bedf91d853a2a970f4e6faa6. 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/QZDQH2379232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1726c21366ad6d2e04785afece9f0d6beda1c7116669553465d9a6be38409a31. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZDQH2386745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada032cf927c9812495160f32cc5116f25ebfaab9299d5f6c158ef05885d6e39. 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/QZDQH2383613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4a089a7cef7a2eb3d5ce4821ac8eb3d8aaaadcc66cb12895b878e1a38045ef. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZDQH2371204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdee8c01dcddf2dca4492a76f1687fac95d7d38ea06e71d802973056a5f7dbd1. 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/QZDQH2371206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af667af877a508ba0d6817b6035903282e5851bb080d1ab3059f83955d26787. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZDQH2371217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada032cf927c9812495160f32cc5116f25ebfaab9299d5f6c158ef05885d6e39. 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/QZDQH2383613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b9ff574ef9cb6d1c7bb6305121beb70e17e760bedf91d853a2a970f4e6faa6. 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/QZDQH2379232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e70971af16129b87e414f0c71dd725f991b05bffb7c90f4fe2cb1a0b017d761. 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/USA2P2334501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78830402892c960d8912378d24ee8e779b06a9d29eb52a985134a03f4098867. 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/QZDQH2371043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6eb200b7bc839b83eff818287239bb04faaf90409ec2358a7f5f237da7df037. 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/USA2P2327125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a52b1fd13632ac16904a798f9705354990b0ce8c19f8c9362adc6232659eab4. 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/QZDQH2357584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe7f0a58fd7502afc557fdc49f05f49da2e9f7e9a8b2f561fcc73631bd0e384. 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/QZDQH2271292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe061ed73a911fb9eb5772adb97b348051c756fb477d28ef2c13d55092ef292de. 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/QZDQH2266045.
Botones Azules (En Vivo Desde las Tijuas)
Cuando Te Acuerdes de Mi (En Vivo desde las Tijuas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc80c4a4b68c77b1e58b9004eec2bf6fc7d698ccae237a3047ad2646e94408a. 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/USA2P2233259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8484e14d4fc0b1e517755f0dc6e6c4f36dfe5a40f6209850955847c3b9e2dae4. 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/TCAGG2218783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abe5130c7dda43f2585d344ad618bd3f923ebdb949a60cd3d5a116b1f96adec. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZDFP1924930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1759b88cbe0d42af1a99e7ff5e5d436d962c400f50fba513718b469baed1ba3. 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/QZDFP1905812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7838abcd69804c63bec10d076096e4b22fb3ad06b6887649385f977e67644a9b. 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/QZDFP1874195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da6a86c9bfec6970cd965522e7037a6515329db99cb8a661548557d7ff5c9f7. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/TCADC1734642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287f078d473f37498ab61d03bc699ec6015b20af218e307a3d7f4e249453ab19. 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/TCACS1668496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeef9178ea398bf7251d73b564e9d2690c4d07fb0d6a1efc43405518529ccecc. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/TCADJ1720954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbdb95432faf43b0009518081a12019dd329db247122c2e6eef0b4344da41cf. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QMFME2035207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a447f91584ded2350ba2273dde7aa726f0d7aaa002949fb3d0b59b3fdf70a56. 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/QZHZ42092854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ca71343e015e6579a8e18192ede9cff850cf2b863b5c91eb6d74370216d03b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZDQH2415928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc458bc49ca06c6be43f9383d6ae5c16780cefb9bf1592f4e7da84d9f69c857b8. 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/QZDQH2414114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b7dcbe27a2ea9d41a2cae86d226cae354f3726d8f13298c715b2ae971c554d. 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/QMFME1946721.