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 0x9c7174586b896b35d1c290fc103a801523d92569a606940e0a4cac4e0456f2de. 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/5e7e1a11-fda8-4068-917a-0d65e6c205bd.json and https://artists.proofprofile.net/proofs/artist/5e7e1a11-fda8-4068-917a-0d65e6c205bd.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 0x8fc27cd80f537362a467ecb8285a2136678128ced2afd69b9fd66233bb66c437. 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/TCAGB2271386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc701b1c7b7b9cfb282c89e4d986a9cbd500e1d8f3432d3b0024568ee77853c89. 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/TCAGO2265999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561a5a81063eafa2f7ac84c697367cb8c613f96213b35fed4585f709a7283186. 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/TCAGS2385476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be8c6c21f226286c53ff12740af3c78f3e7e9d89ea669c35d3f29f81115ac9f. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:40:39Z), 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/TCAGU2340762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c9446e6641a949595c29964a287a06bdcc1308f9479e3e9d937ada7682bf03. 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/TCAHL2364039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71b60f49e2fe31f396753cf63c0e190e3287d746688777604dd038616ce95a0. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAHN2311863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0741143549bc2552b19ac5b5f3321006e860877c049222b0243e8c35e0b24b15. 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/TCAHQ2321004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12efcd6f5745084fa368cf17ac9d48513778a651bba06891900e10c9405ad6bf. 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/TCAHQ2377766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd0ff9fecf49028aca9a70667fa9a09221889d29fe5f91e93becfcc1d3391d9. 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/TCAHS2343288.
Silla Vom Schrank Zum Junk (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd995b828e46f6f3b7e995014f6f71e17a411b6d2d7ae372477166aabb2ff7dc9. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TCAHW2401137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616944f28d665029aeefe9729f56349c73b1e3f8ab738971bd47c83226ace59a. 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/TCAIH2489576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244135d349c722096b74a0c935e2cd1aec3dbe4da5397f1418ace728e9638840. 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/TCAII2458469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6aa2b668ea97c0bb1ab8dcfebdbdaf53a41bfd349ddb2d5532b8e3f98aa4cb. 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/TCAIR2452191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac1a5f8566f93f609b8fea854267947d0615e0442dd26bf6875a2a829d8f4a2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIR2428754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd511be6d7cf2d6fb0549c2302dd22e0daa213d9003f06d0779acb4ceb4fb7f7e. 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/TCAIT2462082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00d60b4b35e3a6cd78cf8bce5c6aa8a261e2711e97d0420fa0069f05540d348. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCAIZ2480416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cf6c84c6950ffaa9b40ee4090e45e38bf96f9d826116baab56e4a440db5398. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TCAJA2428769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf162ce4fe90b0fd1c89f932ae8307e4bb115d73c976cd72151a9b1be3bcf1f1b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAJB2420665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffc2d8bd7400c96d66517d0760919317ef0944ceec00eed56215e251190525d. 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/TCAJD2429753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353ae19f8ad341709be39b81157a6d0715282fca5399da441aa592a4d9f71a48. 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/TCAJI2510695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ef29012e07655a35da107075f74954c5a84f014c79ad3897fdf09e3330c0a4. 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/TCAJI2579382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c44ca4708e57695802164d84c2e1073048e9cf662edb10643a893d21db0e6d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJL2555654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126de1ddcd10699dcf9f2d40c10bc644ff1dc8f79a8108055b3050b9982b68ae. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/TCAJO2590794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82649eabc139093048df3a970573f14c87616c69168890fea382d481f9483ba. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TCAJO2551185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecb694bde8adb97cdf9aefac3a5b68666245c831c90051f3ea47ee69b28d3d2. 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/TCAJQ2590052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907540da2cab0777a5485d3323eae380f8ae13423dda0c6bd0d667a7af6b30b3. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:18:49Z), 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/TCAJQ2555681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63a83e52a469cb55fb9ec3543823ec73ed0a3c30980f9e6814780be30298582. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJU2516050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405e4a15f9c8236b487f94d5ca2a521e9a26964d472c42721f0f840eadf12057. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/TCAJU2578835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4f0226680b452da7bb22097e1adcae4db11ef15e6d7ac14c793f46b2e9f58a. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TCAJX2582338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcab4e03215a0f881db7c02e66bb10a4f6df754186269cf08df79877f24b102f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:13:03Z), 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/TCAJX2573454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956cba70d94614552c2dd0af4442d42fb908e2d3803edc136cdc095999259e93. 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/TCAJY2530275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4992ad9d31c7732ee2e11d8d3927e0f14da78cc05839b3b4eb29780bc7056e6. 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/QT65Y2550637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fbf1673d33ca34002e719a5dae2d1d6c062c3c057fc550d5a7005b91296353. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QT65Z2514362.