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 0xc46966c1f88e32566f77d083c13957efe9d09e28de2d43776aea4345828e59b1. 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/89ddacdb-fc50-4305-9bae-f8427416243f.json and https://artists.proofprofile.net/proofs/artist/89ddacdb-fc50-4305-9bae-f8427416243f.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 0x2f3616352094740e2084ae665fc637f429d7377778632fa28b62c11e5bedee50. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ES5351604047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fd9c77ad58fe9db32b0527687e09e940b820f58f7abd0801739dffb344c816. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ES5352407130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a408e94b0b3b1ae29153cb0bb18dcd72faef8b3caf1e7770217ae25e435efdb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ES5351203178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa979fe5c9432d389ab8246204f9cd2640c3de99cea0735408a67d0bed8b10ec5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES5352407147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cda7201acb3d45ec07494b1d715660bfb509fc570d3f8c6da09d582e5d0080f. 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/IELOI2183757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48bfc0c9b620b92e24ddedf432e97b48d4637937b2f11a4ec6ed1054f5b498c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/IELOI2183769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671e3b9f9fe43a06813558e971b8388f8fa54dbeb532d09186e858f8351c8fd2. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/IELOI2183767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c92d5fcd2dadb0e19a440c8e6c89a8c365a309f290ac875dd49a70a16023f3. 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/ES5351202831.
La Salle-Viña: 35 Años entre Pitos y Flautas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dddb6581f1dfa3f42086e5e8ddbf3fb911ec616412d0b8b7acaccbd2fd0db04. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:11:00Z), 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/IELOI2183790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9630f8edde20d155e7f54a17c7dac01606074712e9ccfe9c53e315fab900ae. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/IELOI2183791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17519c9a7bc918b2cb6a0eb1e7e183f495f5e1effb0c6a817b36d87014df39e1. 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/IELOI2183794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd908fc7c02ac175e25e1d82dc7ce21391c720da627be89a159f6f3315de13218. 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/IELOI2183797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ef24a942ce5a125eda456e39c07d61035e36bbd123e65ad41c3953bafe4400. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/IELOI2183800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a58cddf393a53f5d83a45f0725d345abecd485b107ce17b6263d5d21db8dd4. 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/GX4R52168278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f5f190b27eee47ae14e783c1aa0932ad3e12227d6a07ebe806089e8c191c58. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GX4R52168280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a903b1cc660dc23b247c35e5823790da72bdb46c7107282d825f7a2dbaa4c1. 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/GX4R52133906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f42f28f0dfa4c423e1965f8fe73050c6fcd7ffa95a4a1dc79052baa250a2b4a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:49Z), 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/IEWGI2321028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769d105aa1beb24823496e6fc00047495dc366bd5d97e3628792cc02f2e4cd07. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:21:30Z), 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/GX4R52133913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c73f951e354e1571ba329e6914e27006e6e9b077f7bfc4ac0352cc901cf6352. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:09:31Z), 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/GX4R52133914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7bc2734afde54829472cc25e961d092860f64a4ff34d526b3c9df5a3f3700c. 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/GX4R52133917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe512028bfe40c3fb4a9413454de38157e6fe45ffa6ff6bbc39db2554a7a01eb2. 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/IELOI2226377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03898d40e9e45c2bcb20e9feaf553f4a8412ddd9d29d8a857a2ead0a3a32bfb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IELOI2224932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebe750d22ee15cfae6eac1e90570f032ca5ae942c153939346968de3745c254. 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/IELOI2230022.
De la Traición a la Victoria - Cuenca 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e6ae2953d550396240c5de8488fdc918b521934140394a4358cb0b3bb85d52. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZTB52407646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77ec36af614469a33f3b279358e38c22068ccce8bd4497ed4d28b3f4019cde4. 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/QZTB52407647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056896fccfdcc9217b2bc948f8fd019c042375adb4d87ccd1666bb72d61a100d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:02:09Z), 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/QZTB52407648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa47f35db9ffa268c3c74922c6048b7ac13cfb58d8afc52ae654a563f1c74522. 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/IEWNY2415241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f44d2733b48279680bb0480628d00b3db7ac02aad7aec3c46c518f8e2c80e4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:59:04Z), 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/QZK6P2404883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365023c58a7ca71f4d0290d64ae4bfcbb9d77b159de3c2df0d38ef22fa5114a5. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZK6P2404884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f047bbbaad4f4cd65a9a1c419ace1886d06bb826612ce60a3f0be14cfd82a53. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:29:22Z), 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/QZNWV2429106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8abe31f79b0da27acf526d5022788d64d3b8236ed0524b155e0998a17145700. 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/QT3F92594981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3ef30967cc0d6bb880484533d87a9b79a139a8b484cb369e99b4b59e1a80a2. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QT3FA2580407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e47f28b3f329e7eab125c66a21e3a1f777cbdbbc4b3d8975552605ecdfaecd. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:19:36Z), 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/QT3FG2558762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f7f0702512aa9dfa094bf4af31099dc092d4cd23f07fa1286b2c751983f0b7. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QT6EC2593105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3e1e7a85624226ace52940fd561c6fb79d818c5bfc20d68caf74c19eb0a00e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT6EE2537939.
Homenaje de la música de Las Cigarreras a su Hermandad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9d31e7b2cedab37b471363346f2fad3c654e88446bda6172c81360c7825bd0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX8LE2330246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd92485fbd61d8f431f0b13f6303b2e3d8a1c1fc037b512e9d6e15be6cc714af. 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/GX8LE2399366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22618d49d08f02bd060b6f08997e70e89189e5e5ad29d652e08adc0b1b19ef09. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX8LE2393384.