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 0x889b34c945f388d612db9cc0d5a3a4f01dca1e0e51f16fb108bff17b09c6376a. 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/9eeef869-e32a-4163-adff-fb8fc6393863.json and https://artists.proofprofile.net/proofs/artist/9eeef869-e32a-4163-adff-fb8fc6393863.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 0x92fd8ac992528f64ff42f9bf10fedd6301ba2464f20680bb2cc3d7a2f298f5f2. 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/ES71G2325472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3554f0a72be5f758030e6b38f6e24117c3d5fe91c78e32956075291c03446907. 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/ES71G2325468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34beea5ff76c9edb1bdb39a3d9d24199fe83ab9a6c09bc38ecc4949a52fc910e. 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/ES71G2325469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a84320e8edf8daba50ed47be9f5b81575fd2dcb91ae224b9358469482e11e2d. 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/ES71G2325470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00612614ed6fbb32a463c036950950e017ffdfcd42e3240744753346aa779f84. 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/ESA092308954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9955d0615c8c72701b34975fe41dd7b96a8691ad7d14c9584509e3a44de8d42e. 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/ESA092302197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4e4189f5cd3768e6bbc8e29b33560dd86857c91bb7ead202477d1502a4cc93. 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/ES71G2325471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fd8ac992528f64ff42f9bf10fedd6301ba2464f20680bb2cc3d7a2f298f5f2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES71G2325472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0cf9a894b37ae5656d5d067088c894581205081d1be2e4a86f8e2f724c70a5. 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/ESA092305260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cdd34c690e5fa0e8f878f2e50b3a345406b23531a63983c4b45e545f46a4c8. 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/ES71G2325473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c270ff2f0e57fac9687a2f17eae83604c71bd002a3e8c37a77f94f8d61bbb3. 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/ES71G2325474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9190796336fb62cc4d104f45138e9b872677f8f385d4ccae89c939413fa618d2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ES71G2417491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9b3d4a81875b16094c7190b4ef8f8bf6eab360c16adaab432bde89accf38bd. 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/ES71G2510099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ba3591a716eb01ec3cd5eb03a638b2093a1a746fca0f31dd15b2711b91a90b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2510101.
sepultura (TICOTĪ) - Nadie González, Peter Petrowski REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31dff5002dd87fba99cd959e5924c84a733d64d36c536305fcfb6d3114dd011. 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/ES71G2510100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1eaf4cfeecffc40c1e6b0bab35d5df5e924c6dbf42c9cbfe531f5bd28b2b23. 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/ES71G2510105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28526dd18db459a29c5856b24b1cf31685881d85bd0ead574b6110ebdeb1fd09. 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/ES71G2510102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2184a65d456eee6a62f46912f631028a3328f373acaaee832967a6fe7178d288. 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/ES71G2510103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f62df9fd831de1b006c2f57beeced70de606e74439ef6be67792913fc938cc4. 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/ES71G2510109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceb4fe39836441e1edf7825ed286455519e52bb907994644463216528b75a4d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES71G2510107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb059bdc4783eed448fb9402d6605f664008f150359b72c81b03d56aaa4574515. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/ES71G2510104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55dd276adcc21d84c419913b50aa24b38b61d39cc0b984bb7c3b116bea48dff. 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/ES71G2510106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5582ec17b12e66e713321f67bd8a66ab99c1af787fccab3fa0fc035979e81b0b. 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/ES71G2510108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3a561b01953a48030b1b0b2c2c1d5c09a705fbcc3cfbff05cb409d357f9acc. 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/ES71G2510110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3069427bdd977d1c7d8d8a8c08576589d3c1d2265807f196199dbc403d1049ff. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/ES71G2510649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe059afd6f3fc801603437bea8e3ee9e6c1321749fe8fd18c37526258cbd5e121. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/QM6N22592014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3069427bdd977d1c7d8d8a8c08576589d3c1d2265807f196199dbc403d1049ff. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES71G2510649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92544dfb706b1d902ad4e76bafe1c38b316b9a14d3e68e17fe94244807dc9aec. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/ES71G2508702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24a7330146426343fe838c45804f33c636315754d71634e8e6ab0e8ec553e1f. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/ES71G2508092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2b1b757b397ad13f2b6156bad4acd0db8b9ae9f63057fb1cd7539dd9613ebe. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QM6N22592024.
Pobo de Artistas - En Directo XX Aniversario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb679d9624aa90afd672b449a065e36fc694b811dbf751467eb0a5842c0c7ee64. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QM4TW2466844.