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 0xfd0fcbd854d2064e6bdd068e07650014527afd152ea353c8a355d106c41466e7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdc3512a-fb03-4c68-ad89-cef6eefed085.json and https://artists.proofprofile.net/proofs/artist/fdc3512a-fb03-4c68-ad89-cef6eefed085.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 0x0ed808dc69f4e50aff79d29dc3363f69fff9719eeaf5cf328108477529485000. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCABO1326079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fd7abb797c175024ab24f9b7f3815deb6b9f546aa022b96802a5e08f30f68d. 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/TCABO1326085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e19d2bb58500461fd38316a01560c0f6a712dfd68cb63c216936e5765b4af8. 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/TCABO1326087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19e17e20e9e69ef5ce0531795915560716a9d41f5e8bb10ea59e56a835455a6. 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/TCABO1326088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb916966e7dbe8c02a9412218de941952ee26876472e869085795769d3205621d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:35:53Z), 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/TCABO1326090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db1f78de22854dff1651c8e77e33bbf552e48530591653aa8593b737ecc00a5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCACE1518649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa5d8a63f01693a210e5946a0739b1dcd76d217c1602274cf79c5eb1652b97f. 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/TCACE1518652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238d1aec937552e552c9f07ccf4cc54da4b9abf1051f3c699f3f1701ebde24ee. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCACE1518654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f263ae74362c29580d24310f8612924522fdd0af5184ca311a1d303f056e7cf. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:32:35Z), 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/TCACE1518657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cccef9974eb50580b36422d4d1d15ba2da3891885a2950fb940530ca8ff0ef7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCACE1518658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14de3e6b4d1cdc4acdf685942f937e21c8981c8785c985fb292d4e4454c6834. 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/TCACE1518659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5784e6c16b67c1261649059fd7db277c6a8b16e3b352db08e3418e55d1df474. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USHM81724827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4438eff5383365644f022f169d726de59e44d7e46449bb457f6d6762d395c711. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USHM81724829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b8f2e486070c40c27e7b2ce785e5bd25908f54e8a1371df32bf0a9ee06b6cb. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USHM81724831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0128d5ab4f267763c091568f53b538ad7248746eb9681bd85804fcfb0fc494c. 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/USHM81724834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2b00733734e892f769c3f3c2d63efeaf0b35d835c90ebccb98899ab8d4edb5. 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/USHM81724835.
De la Cuna a la Jungla (Audio Inmersivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d2058ab1ef059a695f6d1d4f933c64fa0c2ee93965290b01048a32f8d09936. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:59:28Z), 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/QZNJV2062376.
El Mundo Necesita Más Canciones de Niños
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc37333eb012754f23e9204d6ef8b2572512d4e8d585f945bec9fb83c5c25790. 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/QZGLM2293493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6a96adefb47bc80991f24f1dd6739b65375fafc9d768c9b4aba07f710f8e12. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T22:02:38Z), 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/COC012439665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb3220f6f3d1ed338822ef4d9d6921ded300ce9be70c9df35cd05df16ebb18f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/COC012439944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727f983f76641b7c6867602a4572f0fac1f2150f3f7f361d9e4d15e89f4afdb5. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/COC012440581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613ef4aed48191e16963f3fb966715ddeb980ac1839d56693c79f4499f1f4864. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/COC012440582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b49df7b84251796abbdeb5825255428f2322a37bf7486ed9ba6519a0be929f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/COC012440583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a628ac8b08cce25fa80a7d7fa7b7533c880be7709fb89284a668b484a5ba9e. 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/COC012440584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1af9943d2a5f70ee813e7b6c78170b9bc727079ecf3b60700b64ed54f66b12. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/COC012440585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad38f10216753a7eae49773e79b65bf6c21d1abf442096716eecdad9586beea9. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:10:23Z), 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/COC012440586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3641380b23fa0e5f25d77e3fe5bb51e2448a0533a3ead02c07bc8db26812db. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/COC012440588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875300982097d8cfb376cd290f3c6377c3a92b3dd047d632abb7caf4223bc554. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/COC012440591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce705d94b7848dc74a7fd362a75a51273d99e796e46385189b4c26cc025f598a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZTPX2591876.