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 0x5ad7df93d773039610d514bc2eedea60268f3aa10b56b6f9f7ca6c937cd58bd3. 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/257f21b3-cc65-48b2-8645-0dbf9e53f8e7.json and https://artists.proofprofile.net/proofs/artist/257f21b3-cc65-48b2-8645-0dbf9e53f8e7.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 0xee622231d4d95ae582b5eef6ac016d38c3d5354e4c8794447d776dbd2f1961e0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:57:48Z), 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/DELJ81625354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035708908c99cad018370e039dfa532776e351020d020b8e4099b87f9c10562f. 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/DELJ81625356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8dc9e6b06ef01ecd492a4da33c0c45aefb35ddcf0ac22860dfeb6d067a0ed1. 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/DELJ81897745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d561d846e7cb4456656b8c11e278afd62555a0527815e487608128f6bdcd087. 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/ATB151801361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eda660b45f4d7964b36226cee3918f464c844e25f3da8018e1df9dc5f5289c. 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/ATB151900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee043f1ba79dad91db981428d891eaab5b6fbf5695d54205258f7d0cbf784ef. 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/ATB151801370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1132260b2ca397bdeda5c7ec5c842e0f1b3573f3a2d7833963f6c7a3bdeee54. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ATB151801371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d97c1625d2adc73214ebaed6803b5f2ba7ba8f510ee9a4405cdf001fdfe873. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/ATB151801372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a077363e943f5c2e7f124356ccdb09412136316e0de3114ddfabd7c33c71ee6. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ATB151801373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d561d846e7cb4456656b8c11e278afd62555a0527815e487608128f6bdcd087. 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/ATB151801361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaa6259694dd67d3af6b52dfa32a47db1f8b096b3927dd4eadb08f3f33d6cf1. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ATB151801376.
Machtwechsel (feat. Droogieboyz & Esref)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd63fdcb134028ae6a47660a7c39a1a6d4ff0d6a9e4999352d4bf0869de604a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:48Z), 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/ATB151801377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd334f97f0fd4467918e7cd20b3ca6dab6b4483ef7afa7fa87a747bfbba0deee3. 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/ATB151801383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dbbc1a076b51dcc1a2b752f75b8229fc57aa2498ec83ad546216136da51e7a. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/ATB151801384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b508f00b1d4786b5ad6074f20a4c464017b7cafe951cdbb4cdac96e76cac0f. 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/ATB152000893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4b975847234fd8206f9727ea1ff157fdcd175c375f85f343aec857037a8d14. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ATB152000903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8546f00b570eb1525dd1a4fb63fb137a842f05fdb773d7230f1e4be4215acde6. 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/DEPI82211537.