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 0xf89837edca212adf9acbbda7577bb65ba93aa13b02c4a1ccf0b0ddfa20bbb28a. 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/4c87de6f-09a9-4aee-82ad-f98fa30f6718.json and https://artists.proofprofile.net/proofs/artist/4c87de6f-09a9-4aee-82ad-f98fa30f6718.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In Darkness (feat. Hellmans Drengar) - Single
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 0xa6c45224c9751174f425db8edd9313963c26d281c0fe5082cb7338b3a73abe8b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:02:48Z), 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/SEVWR1401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3caf58a32bfecbd2369823bfbefcd5f0882a7bc8000d5669e3276fa08522a5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/SEVWR1401102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfdadfffd5eb2080f3700a0628ab4ce7b57db1d65e4128df748dddbcee21aa7. 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/SEVWR1401103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239c44906ae6a5aa2330ea71e0d961b87a61dc09f0013168a75da2729f516a10. 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/SEVWR1401105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386729793fbd398e75ff7f44589428922f2c40868468c712c692454666fbe9b3. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/SEVWR1401108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b313b7b3b5f6c538b254be01fd5c50c360cb8a89cd5e68e89be739aee9943f. 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/SEVWR1401110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b153cb7e9f1e0cd4bb4727f07190f748961e2bb6972b834481dc46be875d21. 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/SEVWR1704603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da6590b16e26008b772fd72677b6a34943bad1a00fea43210d3abc97dbf88b0. 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/SEVWR1704604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66c99c52fd01cf4599d936070c48f3276482c3d4ccdb5812dcfc36fb16ebbba. 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/SEVWR1704605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31eb50e3e1941cf35b9d362d59fee16f3243db3adbc4efdce22bccf191c33828. 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/SEVWR1704608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edf2b29d48b4350a77cd9c0de278b49f29ba9a66a06601b6a1ab7de726b4699. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SEVWR1704611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1519454c14b8e7e3c85df79ab32d2098eaddaf8254cbf4e1d05dee4a8accc732. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEKB72076659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4baf01954f42bc51bad6550b4a3c22287b053f8f9779f825289a5d8f8b6b987. 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/DEKB72076666.
Spirit in Black, Chapter Four (The Ultimate Metal Selection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321e321c246c6c578813f8ce1efda7f1c4da58ce4534de1fdb87129d4ec0f5c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR33T1022601.