thumb|upright=1.2|Empyrium at the Opera national du Rhin, Strasbourg – 2017 Empyrium is a German symphonic folk/doom metal and later neofolk/dark folk band. History Empyrium was founded in 1994 by
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 0xc8da24b2a2e6736cf907e8c3564a0b4dd63bdd228a2e4a834b37762c636f6207. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a6739d9-1893-41e6-bba3-a7a8bea91d78.json and https://artists.proofprofile.net/proofs/artist/7a6739d9-1893-41e6-bba3-a7a8bea91d78.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 0x7e57bad9168a4476fdf73f428123ab036ec11dc4bec38e49998bb96ad1f42609. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:42:52Z), 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/DES569600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e3a5f9a00e2a444b11aae704d5d4e9e415e64191ea75bd168b15a74e91b70f. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DES569600102.
The Franconian Woods in Winter's Silence
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf15182ea4a6c104ee04bb85f58f8e5c5be69f6d3d68a023a31cf9d0a53e79fb. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DES569600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b9036542512937f464697821bd8fd2f87ca618b27de5489f92e0cb4077d5a4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DES569600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db1aaedb6990d464033357a77a29afde3172a628398d007983f2f4bc314e965. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:04:30Z), 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/DES569600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa318762787627ad9ad5b49367bec28a3d3a941b8ac6a4a3c8569b972b57c2028. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/DES569600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b861e5921b77e582d451d447aedfdc1cd8d216961396681ca24bb6734d86ac5. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:35:20Z), 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/DES569700702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56572abfe42c9f5d438b04e133d618b002943155857593df5b063c80f83bb6b. 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/DES569901506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80fe3ca75b25e10fb379e6df59d25a875e89def47f5a364f80778d2a9e3519f. 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/DES569901507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62145e794e421b900419adc100cf1459c0e47ecc6905b21a89c6b0d7d2094eeb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DES569901509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0814f242e8018b4ff142c4380424ad50bc072e92d1f412a67fb9b423c5ea53aa. 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/DES560204701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdb541f4f646085b682a0c83074234a5022abd7810bd63fa92f1af31e48dfb3. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/DES560204702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda7b7a129a14bb43b601666bdfbdd18c8acdef654fb01487d09e0d3fe1bb965. 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/DES560204703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2764c41e0bcea37870299ac2d99ca2ce36cffb5666c8ec008e6d959a5caf1dfb. 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/DES560204704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9ab4730e1719186526f80d8b6fba87f18c11bb596711ac76513f966feb0b1f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DES560204706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286b555fe5e0ebf52a5797b39ab71e70a203e9a4f21cd950370951500d77f609. 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/DES560204707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f746832da8e545042bfd4867ab5fcc1f7eb1ff38e65dfa38a0031e7146dba1. 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/DES560204708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65ad01e9d8ff3eb4eac8616f7ab094f2b0f378012c5e6281c07618a096ccf95. 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/DES560204710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574d814b8540b4d4765952289f67413284199894c20c27774ea9eda6444b0253. 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/DES561415401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01037f9c93a6121bdac525f65879c2b290666da4db5e3ab1b8d51910581a16e9. 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/DES561415402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f5ebdae1320ddb75bfbf439c04062e71beb1a15b680cce639c3c8263103708. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DES561415403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5500811e878493ec9069d53183dca9bbba0d6d08ffaaae2721fce20a4576694. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DES561415405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb11e8f1b3f798e8475dbba1c7cb415678b8ce3cf340d247841f97b79b5da2e8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:46:57Z), 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/DES561415406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8376ac507e324b046aa63a43318ebb94d4e53d59e8e1802d27efdb0db89e58f0. 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/DES561415407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549f6660f664537523c3f9c16a8359dd42fe663eb8f539efb29d13297ed53a7c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:29:49Z), 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/DES561518501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca53a49fd745667278c4f2e4693d0f55712dc7ad7ad6b2f495ef38e170cd3ad7. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:35:42Z), 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/DES562030402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc736e252d60b17e8306fe48615821d3999ff03353480f98bfac68d03f316341a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:11Z), 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/DES562030404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb046b992d40a3611c858b1701a35532ae5627a358e21125fee1e04ec8708ef8. 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/DES562030405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3229e47bde35aa3e2033827ebc4e2717f7bcd778eeb8d53ea532fa703b8f1281. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/DES562030406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe0a26da137759f69be059b861735343c80208bfac88c6004317c8f8dda5c1c. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/DES562030407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5eb1a988e6197be7d16207028771c0a34288cdba2ab446c4a39ac15f440f6f. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:04:33Z), 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/DES562030408.
Looking for Europe (The Neofolk Compendium)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f746832da8e545042bfd4867ab5fcc1f7eb1ff38e65dfa38a0031e7146dba1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DES560204708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140e9c3ffdac9f8ace939fd80802cd7b6ea0e4a0f33ef7cfd22b686c258b5f08. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DES569901501.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch