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 0xb93bf742a94748217f6cd9fb0fb0d142a9066a782521547762918b8b0014222c. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c059a2df-095f-4c06-9d0d-18dd25d05804.json and https://artists.proofprofile.net/proofs/artist/c059a2df-095f-4c06-9d0d-18dd25d05804.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 0x039ff8ed92b333176982a8fc5746cd8d694cf25a8c531ee0a82137b12dfce5a4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM6P41439316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5054913ba29c0d4ec1ba5f7260267c103061505a7ab2af73c9ae08904d6e9c1c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM6P41439323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f94179867c564e3f52cdd04225037b768d7564dff92f123f45f5bbfc3895434. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM6P41439313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fb7d7675147365d76ddb5db3e7b50aa90d7e1ffeb416988bdfdbf70aa50afc. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QM6P41439312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafbbedf427921e68ec1b8966ed5d086c7ab7c36787cd5607c99bd5cfd94baa0. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM6P41439314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141074b2603635381e6fb8ed4f43041a3e8412d5acbb469f407007c2bc105cf8. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QM6P41439325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5757ccc3423d90834e4f3c2d5a945bb1054f8c9aa21cad2a7d7c4245113b15. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/QM6P41439315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf29dac7a1cdb3a2009f5ad16bb4b8d77e3567a1697279613a0d3bbff5dc4974. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/QM6P41439317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a4a8f0f5a50cc7d2b6817c26c567774cff82dedfe39f15dc408de7541548ab. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QM6P41439319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c892fed510956c6f1d22fa4465eb34f1299e30ad95f959e6d4b525958714672. 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/QM6P41439321.
O, Schmerz, Hier Zittert Das Gequälte Herz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2071cffdbdd3c362218e2c9bd414c5ae84d46249ad7593dc39554f0fef4a9d0f. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QM6P41439318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fb0813d0b3e70a290ff4aca3494a53c3162f6633e98fce4655b2196cb9858e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QM6P41439320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0985bd1043690bdee7580a7f672e5ec806210484370ea3c0b80e8682687f83. 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/QM6P41439322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dc239fafe7286e86669e754c823315d4728da0ae0cca54e99504ad6fe2a04f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QM6P41439324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa103a467741fae18b3c5702c1e2212c1fdaf3139a8a1a6c41eb39eaf6cd7b8. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QM6P41439326.
Ich Folge Dir Geleichfalss Mit Freudigen Schritten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f7446acbe825364ab15f67232b6a4e8c6c353c0b4c1dc1684833fac974ae71. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QM6P41439327.