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 0x318bfd8e82f3299e86423a3d456d06eeebc98af89753691cb38d152e5ec06174. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41af2f6f-1ff3-4605-b773-0fcb193fdec8.json and https://artists.proofprofile.net/proofs/artist/41af2f6f-1ff3-4605-b773-0fcb193fdec8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
So traurig wie die Beerdigung eines Matrosen
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 0x782a608105b572730dc46002bb6b888bfa628276c80316c5aac92edaa9b98e2c. 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/DEBL60983473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62185ab676fc3ef68cb92dc76304e1530927f2be89331d9cde488ce0bdce7f1. 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/DEBL60983474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9f4a9e7d29dd8f880bb7aeb27bc9b2387770c650ec98692bd1be01bc6630ac. 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/DEBL60983475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e46930fe8a85a765412d685ffd0e37a5a51e9463bc0895ca408def973a89b4. 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/DEBL60983476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67536c5a667402a4bbce1379c65d41c9d55f6422b65459d4f25dfc98c4d0acc1. 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/DEBL60983478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8e07c8d62b801b18f5a9a9706a6c427239c8cff456a040a21de90ea4471ce4. 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/DEBL60983479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472b87df52c0ad7ad89a5898bc9f0f83f73384ec329a69cdfad0d912917489f5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEBL60983480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbb1d7017de06ca8fafe90de0f6ff0cead76b138a4793f84cb137ec1301db2d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEBL60983482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b0e259dff811cf9a7e79ef678c741471ae32f13c5d0d6f988712df0407e477. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:19:40Z), 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/DEBL60983485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18089807285ad5502d61a5f54e0ee3f1edef08f5029a28f230b9ede3412fa110. 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/DEBL60983486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ae1ca88c7ee29ce99195cdc10a4e0968133e482485bdcd625567672c30f0c2. 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/DEBL60983487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa106d7083aa4e7ea08db312797e3ab4dd379cb13350c5b263f8da8c3ea07643. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:07:09Z), 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/DEBL60983488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fd44d7858b67d3f8676618a210fd7b3e5514619dad6d5d40c438707b55562c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FR59R1642699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a2a66efcbfd98c9838a1bc715f56eae67836d63fa2a871b2bd54001bd08458. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR59R1642702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58354f1e8dcb859212b66c03755542f4832c52f0e4ba27f0114c77302cd603f9. 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/FR59R1642703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98e4a2ba515581fd4d5d5cb5630afd355b6553dd08ce1277fe2631f4311826c. 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/FR59R1642705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9505fd71d3b1a793a3e45f15d70251098f04b95065ae919fa0135df58f44dd84. 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/FR59R1642706.