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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f6287defdc4deba65204ff778b457dcbb566b8becee3e8e5c4cbe4c3b1acd2. 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/4c66bef2-45f4-49d4-b88a-d18b74c97538.json and https://artists.proofprofile.net/proofs/artist/4c66bef2-45f4-49d4-b88a-d18b74c97538.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004b92f411c8e38cc546483e9b65e71376640e879306eb27e4856a8d0f83bb9b. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DEW271303157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224cb1fc7e544c258935bfc616edaea767e690e40b56707bcbda46eba9a09179. 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/DEW271303169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ce6d62f8b54b0a043c499b6d83fb667d14b75e11b41e47e65152d17e0bcc20. 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/DEW271303170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fd3254f4e29dadd4bbc306539905648b5fe10152ed6b004358bb7139527323. 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/DEW271303171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4683f3c36b6ba96d0b7423fb149a2bb35c840a3576f81e2d35a0f010b71c98c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEW271303173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55639f009b1769bbaf70c7b215dd8ad657ea67c6eca7b9faecefef2e7e25257d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DEW271303177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eba1242c4069192e77c595062a32152dad3710cbbd329af5241c91021c490e. 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/DEW271303180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa769b625e6f1537d15c764bb4e371e0dbf7b287cea058fc7c93f442d87d467e1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEW271303181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f5ef1f11b0fb1d0e226c6f73363ea4547aaab84b6e8f22ddc96fe15effe5c9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEW271305660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25209f21fbceaa4c461ca1d4887e131fe0f1783806d16c1e5abd470e6fd218c. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/DEW271305661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcb31ae462c9a4e0d2a97a64b5cc02b8ee60cd8fc86343b788612673a04aedc. 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/DEW271305663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e68eb68c7a4e70845548b5b2f058a2162b625b01fe39e1d152864666a486ae. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEW271305664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc66463d9b6b3d4b20a1f829e50e7573543593b5d387fd80258b4ab2eedc5bc. 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/DEW271305665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0df1f3292dac37962a3ce8043338318155441be07f244e76cfd3b81c5850c1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEW271305666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8f383cb5018a6af25299a15aae88b612c396c04a96a48034160f6f443a6c9b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEW271305667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7265a734d1539cda82a31789541956ba456990a9d3e71061387af0b895effc8a. 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/DEW271305670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419be7fffd58c0571fe7fafcdd684ed308cc29b0c7d437444c55bc5820f91cae. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEW271305673.
Zwischen Pubertät und Midlife Crisis - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232e6354fabd685e87ea8395fbec8e5002cb2837558ef25d92b438bb210e103d. 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/DEW271305674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fe0e2ee1f36a7a0d4789d0466f008aa56bf71912c3c9fe7985a3afe92940a2. 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/DEW271305675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2664092b4f9b19862219e391ea7db59c1cd0bb8168fb2c0f596e46822788a6. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEW271305676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64be6f0839f284e664fa9fa945bad05ba636078b536adb02631b818d5863193. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/DEW271313124.