1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa98a17fbba433ecaa1d8cf4f889d6cc3795cb96930d8940cefee039aed38e095. 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/0f0d2659-08f6-4beb-bce9-4ffb223278b8.json and https://artists.proofprofile.net/proofs/artist/0f0d2659-08f6-4beb-bce9-4ffb223278b8.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 → block OTSBitcoinBlock must exist at that height 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 0xbb1a1828e8646ff83091278249b58dfff5faa476477e9a25920bf250cc45118f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USHM82291145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96af8c42bc0e4eb63ad2aceac571196dfb4c2ba810b1bd47414a71a3c70d723. 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/USHM82291146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f6787e8231d4c03ed6af8708b9eb6c46fe8ec703cd727a85f304f1bfdb76cc. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:18Z), 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/USHM82291147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2281933c804453a3d68fd4b586e8a6d0ee4549411c7b7b6e13f317adbcd4db76. 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/USHM82291148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e4fff964b1989af5e874866f71cd1c752ce479116bd9ee000fb6683a6b90ac. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:00:13Z), 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/USHM82291150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6da60b18c2a115d619bbb7374fe9e364a7682b76f92d32743dcdcc90d3390f. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:43:52Z), 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/USHM82291151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ec6e803648e35cae3a32087efce17db4a0f49fa384762319d28d4ee2ed86b0. 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/USHM82291152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ad254e273964c56571a1cb33c6b67ffe544a49b23f7a06624aac2ebec9afec. 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/USHM82291207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547de09c047382f62e3969dcdac03a62743f30154b0bc3e9aa9b1c01816f789f. 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/USHM82291208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6570c1716b29d11c1bbbdb9a219def7a2a7e5b5a193b60ea95cc5c64e4b9f4f5. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USHM82291209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca67dfbadae71e872a21572b427202ed7d410e90efb0e71928f32ab057f726d. 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/USHM81737965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1fb578f0917fdc7262b5d0e85acae5b68aba2b5e80c50fa3f8130ca706ac4d. 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/USHM82263708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cf9d6e28859b949084c3881884d9b7a727e416c7e740b481c899be41e9fb74. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHM82263709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f13ad7ba7c216f5039b73e0e62ff611adeb20275d777d6e04addc0bd013552. 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/USHM82263712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4714a1980c41a7dce5243ccfb9f6bbdddf6431860f794b7e2b04b213a2f2d804. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USHM22048642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806e159ad8099a3f213d19d9603338ba9b1b46925f0334b38bc6d1674ec8b584. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USHM82273962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c9f62270cdd67747dec9eddcca8d2f2e038ff655c82dd2eaec8ccb99229386. 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/USHM82273963.
Flor de Canto de Primavera / A la Deriva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6951b769bad8b524fa1a6d55d1040d5ae8181879e43094459133cd4138b0cbe0. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USHM82273964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b6a3120b1a00958db4b40dbcf0cefab5b563dc98ac940c5c0d350fd1c35204. 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/USHM82273966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b07c05250ac5d3553fb4a6c3d56852d1db722aa7ca3ead06ec59684a5e625f. 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/USHM82273967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8776ebe2ef1d85ff8b15cc929abe63cb4de66c31f5447eb728985edb975f3a. 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/USHM82273969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce0723a30de47e3aa2878101ff1963371dfa4fac509bc161796d56beeb777f1. 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/USHM82273970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fc13dcb68b562c66a5ecbb91615fb162babb94088726a3b51e38e527dc3b63. 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/USHM82273971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6b970917c59a78c478f82100a88535d6ee6f19e8b0aaeda27691cc7ae389d9. 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/USHM82273973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c696743bcfaa50a9ac2aa18bb81b6f9a39293ca05fb9a18c4ccd6ed1e2dbe7. 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/USHM82273976.
Canciones para Cantar en el Infierno, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1423cd32434802fa817dc6d9eaa6bcf27ac83409cf124a13399a53b5dea8082a. 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/USHM82290940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0620e2c840ee36209e9f2003f56c42da4e5007a2fdd4bb2543ea913bd0493a. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/USHM82290943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb7a773615ba4738c2b98df135271e11ca230b3c99bbb39bcfd5ff807ea623f. 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/USHM82258846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b2a156f5c14a2f36b31c69a0413d1b213832a595c7b25b127ce6d1e2dadbef. 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/USHM82258849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6844899f7211c9828fad23900d9b10d788230434e6f57b9f4ceee6609ccc0a82. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM82258852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73a56fb2d04820e3ffa467b8c2eb1d788a94d846624fe1b91b3072519aa9a72. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHM82263717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73734e8471b455e3439e9b853092cf7cd8fb1ab7938bf2e2b033f37c2e9632a0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USHM82263720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756b8b5a371819a78deff82f89445e27ba225f819aec445ce985002e0db2ff42. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USHM82263721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf983e4f1a8a919046a45fee31a87c072f4ce76fe6068337c6118a3d7642f3f08. 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/USHM82263723.
Canciones para Cantar en el Infierno, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe722725665056c8221c948f1dfa53fc96149e374ebeec2d98e02608d14fb0f2b. 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/USL4Q2227071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886840b17ff58203b0c1b7e3eb22b3dc51b0504d5bd8a35d612102c9e327814a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USL4Q2227348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306a0845b0a80f075138ee2ff53fad14c3b680f7fc5d5b1542512629fbf81e6f. 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/USL4Q2227349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758b978ff92c6402478262be5129043f0ee5f6ea8cdf83b2a73d996bccc048fc. 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/USCGJ2342550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22103a336dc044b9f30a105e9782cdefc8a90b2ae27dd7a974ddb218d2ddc6e. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/USHM81671183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413627298c1b51bf354e76b8a42976b4b859301766e602854ddc251733bd7f1a. 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/USHM81671184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e99da92a6ea4133d0210459b99eed27cbad03f31ce760cdac6d88cd69d7034. 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/USHM81671186.