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 0x881643c06368c5184bd99ca2d3e28bb031b93fae4a86f9d8aeec386f039eb5b5. 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/39a1aa2d-c69a-4fea-ad3a-12c2aceaac5c.json and https://artists.proofprofile.net/proofs/artist/39a1aa2d-c69a-4fea-ad3a-12c2aceaac5c.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 0xd99d319432ffb0e6bb30322d0ff12d0976effe21d2e27b674cb9bf1c5e0bf25a. 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/QZDA62267460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b909256b649603e2c8538f9c43f8d8fe0e3acee77e2085d1ac610b1de90ae46. 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/QZDA62267464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f64c25ba2de236bad105740fd6b7550f401f60ddc3e14eb41c8c2a4682edc8. 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/QZDA62267465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1726f0895f820aee517cc3d16d2cef43b16679dff09e7df7de9a00af2853b85. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:10:58Z), 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/QZDA72249091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfcb2616558ed227fd44bdff43cefdb2b4f9ec87e9f58fe0c27f0dab7684734. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA72249092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbca2be9f854ba1bdb6e2faaedf781ec0c18004bb8936f6aa2430bb55735077. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZDA72249096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f9e88219c2fd6d7c072cfe7ad078a9266716702f704224630c32fd1f13c7d3. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZDA72251265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc685e2ce548c8f2e720eb5e48587ff9e5302d5361620cccb941237963ba5293b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:47:16Z), 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/QZDA72251266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f627ccebca9c0bcefc5bf1da5c09d847c7606177181585f38447d6938b6bf47. 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/QZDA72251268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8434ecc5b6f35c435183d6348dbe2ecaca32c6351d807f250922c73f42dd3d2f. 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/QZDA72251322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6546c4a22f92ce5f82238e62aabf627e07cab6eba7f0168b32101498a325435. 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/QZDA72251324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe6c21053890376ef799a9432eaf14f27d8fb3c82fb659d17f9fcebca68848c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZDA72251340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e9197a3edd3997979883886b75358a08ad853c6a39a7b0dec20f1f4c652ac6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA72251341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe94c556c095daa7b1cdee1d61a285361945ca0357b7e17816451e7ad0a2818c. 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/QZES72297359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57227636c316f7c84ea43020c2a968d2120a40a16a2f4f2832ace05f1af2e45a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZES72297362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991c4bb99e4a8d86d20d2510ad6e565fd6f8478649d8edff8986ae64b8ff5bf4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZES72297364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3f0329728e5b9b95134db736c60696bd1bf141dcb50f13133db953e180f586. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZPLR2283898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6e6a167f16aa558840eaf9d0b4a979d1b1796432b557f0c36de36e0ed068d4. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZPLR2283902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddba844c69d57e66f92fca54abdd5f03e3b5fa68f4dafcbbcdfb18969b2bc7d1. 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/QZES52331670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8178a994333f3c6bc9658b06de18783349d907ae72365318dbbf3931c053d006. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN92399732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88614976fff097e8a5d29273291e990760d622ad490b520806d80312814ad3d8. 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/QZHN92399733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43168649bf3d3c48eaa81fd5719671e662d4c24f687010fcce886523720eac0e. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:09:38Z), 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/QZHN92399738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1948d6dd831927646059382302b1051c9f57e0313111d1da5d729ddc7b171dc8. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZHN92399739.
Se estremecieron los cielos / Medley de coros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd558158e03aaa4894a3ff375d397d726676d525cb31905f0f813318e3bc2ea6b. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZWFJ2448330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42bd2cef6573977b2dd77ee3690030bfe455dad24e61240364243c5961a13f0. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZWFJ2448332.
Oh Dios querido queremos tu poder / Medley de coros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f0e760b75f303ff0a41a54cff995d2b20e2a2eede3ea0c8959401578b7c917. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFJ2448335.
Yo quiero Padre querido / Medley de coros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82056feea550767554ea04d4c5e8a333821e2e9d78c539fb8a7c3d78a4be1c3d. 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/QZWFJ2448336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052af22cb310c176d89ab7e9662d027ca72e13a77f4434761f4546d4bc1b4d17. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWFJ2448337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd98139bde785767edab1a15882591f02718c1209b14adb79463f35e8c7e796. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTB82564509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f1b33b3d4cfa912705b5abbef2dedf005a0d39263eb0f514b81cdd86f89c23. 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/QZTB82564510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c22a6e7973c0fe3ceda8d9331d5d6d9b23df30b1d122fe75f1f641e069f97a1. 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/QZTB82564511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec0ad49d8ef3e00263f79e5a023af09187ab8e586e7d75de0d95fdf451453dd. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:10:31Z), 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/QZTB82564512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4514cd735218aae0617e1380a4f884d4d5b2f3ff40a8fb0446faf78152f2cf. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:39:25Z), 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/QZTB82564514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7c0ce3b367b7805f8de3f8a6892440e5b282bbec3c3a7dfbc2f8c453809abb. 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/QZTB92543273.