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 0xaa24adf711f9c3c41467acd90f8d9901b38a54aadcce99f89f3e5bd09ba2c4e7. 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/0617e04d-5ff2-41df-9c5b-a77246d4b65b.json and https://artists.proofprofile.net/proofs/artist/0617e04d-5ff2-41df-9c5b-a77246d4b65b.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 0x91e8a21af067d942a59d4a3db6b5bb9dce9cb0927305b67870923655b94ae461. 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/ES5039000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a4b2eb906cb44360bc2e1f7d091ca6d203ecbf45bb8a8d2d9e66122b34084a. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/ES5089004811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb42128c2e28176c81e972e8cf9452650b5a560f9dfd76adbbf0c7967ebc9c5b. 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/ES5039000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d01c4db13e5923f2c9f866126bb0074c9185c886ad2885558b5c9623a885ee. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ES5039000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f4d2381e60ead9a723a0c960479587a65229b080700ebfa44039e18f4fd8b3. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/ES5039200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729d33c66272f4e7a599669acef7cc10ba69b7f2e98aea00a20e43eaffaae9f1. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/ES5039200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639a0807b2cb8b9e58ccbb9221b13b8f4fde9f39c3a6c737fcd4b48436f7190f. 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/ES5039200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528a6efd2ea3eaff5c8dc28b7cd2b51f84d1c39f515cb649529bb8915b4c8826. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ES5039200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33ea115fa2e24a523fa3f4a0f33e83081dc4df9b26c3ff3b33c782ee24306d9. 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/ES5039200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45719ead7e8392fd0a225208b6018446730e22d71ce6d2fb610e6a35f3589ea3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ES5039900194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a9e32e4e4d944eba3f862d1611b5978f3b825e4db3fea21f257c643be7c8ce. 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/ES5039900197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddbf3690888d1b1e1c2ce886090e38ab24d4a9b1c95bd8f36c69f9489c09c44. 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/ES5039900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62ad73a7291e329484ec1cf8058b16af066b4a11ed1c69e861636f850043d8f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ES5030100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc52eb19f5d45dcca12504fe5c6e038149c7af83b651ad0491e2a65044b1a29f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ES5030100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0d7f80f8f84d1710ffbed6bf56538e8c53426ee9d1b0b37ec741c51a42907e. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ES5030100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb6147d464b1ff2e50fc59224b12935ff89f74d5128b9373e3fbcbaf30600b7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES5030100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d28c67b3d2bd86013d74b74f46624c07e5cc9a27d2e5667b8e82b9556e9b023. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/ES5039900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d28c67b3d2bd86013d74b74f46624c07e5cc9a27d2e5667b8e82b9556e9b023. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/ES5039900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3b78eea21e52d2219c0e6fcf7cf63bc6e84a16da8696c88ba3d87a5a62ad1a. 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/ES5089004809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481dfefe837d44bb4680579a0f085480edf644c1098b5196eb92d0815e9cfa77. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5150900430.
Atrapados en la red - En directo Mérida 08
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d323076dd5ddc4e91f618df5c8dd464304ce7d2102f4e9232e7b53af78e526. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/ES5150900422.
Espaldas mojadas (Voy cruzando el río) [ After 30]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b99a7b8f502d23d4968594670b2eccb84a50e7bd576c3b29e68e666484aa9ef. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ES8652110443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a7bc0ebdb9c15392ac4ab0ea3417cd71b288ce3b1178a1d97a74603ad2263b. 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/ES64E2411849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3af287777ef7c7cb1b038fd0ee3ba384ccbfb9b75b3db64b7731f4f2f01a9b. 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/ES5018332010.
Las 100 mejores canciones del Pop Español, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3b78eea21e52d2219c0e6fcf7cf63bc6e84a16da8696c88ba3d87a5a62ad1a. 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/ES5089004809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a4b2eb906cb44360bc2e1f7d091ca6d203ecbf45bb8a8d2d9e66122b34084a. 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/ES5089004811.
Las 100 mejores canciones del Pop Español, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d323076dd5ddc4e91f618df5c8dd464304ce7d2102f4e9232e7b53af78e526. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES5150900422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a4b2eb906cb44360bc2e1f7d091ca6d203ecbf45bb8a8d2d9e66122b34084a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES5089004811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3af287777ef7c7cb1b038fd0ee3ba384ccbfb9b75b3db64b7731f4f2f01a9b. 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/ES5018332010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d28c67b3d2bd86013d74b74f46624c07e5cc9a27d2e5667b8e82b9556e9b023. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/ES5039900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3af287777ef7c7cb1b038fd0ee3ba384ccbfb9b75b3db64b7731f4f2f01a9b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES5018332010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3af287777ef7c7cb1b038fd0ee3ba384ccbfb9b75b3db64b7731f4f2f01a9b. 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/ES5018332010.
El mejor Pop español de los 90. Memory Park
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76951d9709078945c456190900c01a623adcacf09c1d6221c17a7f87f4c95ae1. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ES5039000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3af287777ef7c7cb1b038fd0ee3ba384ccbfb9b75b3db64b7731f4f2f01a9b. 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/ES5018332010.