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 0x22247645f4cb461d09c43fe0866d71e781e3cceb43f6edbba8758c03a27cb4e4. 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/4bff472a-4660-41a6-8beb-2daa039e3eb6.json and https://artists.proofprofile.net/proofs/artist/4bff472a-4660-41a6-8beb-2daa039e3eb6.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 0x0a3e70237e81bdde5d47dbbe9ce529d322a4b8c91059736161db9643d143a027. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:33:02Z), 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/DEG840201350.
Hardcore Feelings / Ich Brauch Sound, Ey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15d0198e45fab11c5cbf024d732fc6ddadebbe62a144eb3726252e83b7d0741. 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/DEG840600570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f225bd44aaf97c71d8265e8d7ec9522d7145582fb0f7e9172ae1a3c4de955f8. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/DEG840700752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90feb791cee35f3c0ff58e64e0e82ee121cb6a8d37a55fec0c730d6f61b40593. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/NOX9X3372304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d525c73eb2d3ce1fe613808778c0152e01c2eaf0df8461091573d30b3f652de. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/NOX9X3372307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df2d8f0b0493818c76b08eb8a0c4ee112fd24725f5718cfdd461bbf899d8284. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/NOX9X3372309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35c721bc6795f99fed3edc559e54e41e07ecbfd9bd9725011a5cabc69edc715. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/NOX9X3372312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e478da41c5001feb44587b04b7075412998a2c45996c234fc183c6da1761d3d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEG840800580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c4729238c527e210e6c6217a1709301ac223c711cf8d993585e520d5a88958. 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/DEG840800600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44adf57951939b3d328817ff946501ba29b3404967e6619a07a401bffaf5a00e. 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/DEG840800610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a038624cf3166bb61e609adba98f5503f564c12e893732dc0c5af34e9a672e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEG840800640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1417256b4de26ae52aa2d096d2de6c281b87cf15f9a5565b01c9b69eb8b4d8. 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/DEG840800650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2601b02ef9fc6612512faf81a7087cc736a122810cc2aa832876005a156af626. 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/DEG840800660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1235e64f6730f3ff4d575f58d6b3ef850e96bae7ff457e975c2f2f576100097d. 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/DEG840800670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c4a5004fbfa05ec245ddd3bebf821be01cd7ade0f20a7a1ef195d6d74f1b2d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEG840800690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fcb4daf98cd15091e248a6779e402c619ac79b7cfbe1bf3145b2fde946deed. 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/DEG840800720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fcfb470b9b070baef8b85abd033fb63c887716c6ef33cdf0a228f8dd460eaf. 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/DEG840800740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a5bae414551f7df45cb4eabbdd45dc3f4ffe3b8c8cf419c12b14051ff2bc3f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEG840800620.
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 0x0c39151bb07cbbbe5e2aa227abf31475e6156b5868f1b1edf051de1aaa8b6223. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEG840800701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dd29110f0064da4c9782e5dafb8852481bb6374f41a67db0ace13c3e09f270. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEG840800710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6766b70b4d5a69aca44ef3e7a72a2ba2a209d90705bb692c197d0a738949c662. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEG840800730.