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 0xabf3ba29e540d29ed3a090cc91309e97a27a21c806681302fcd19670580c79b3. 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/bdbe2f46-faa6-4221-a126-9f1f4bef5d7c.json and https://artists.proofprofile.net/proofs/artist/bdbe2f46-faa6-4221-a126-9f1f4bef5d7c.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 0x31c7377bf3731ddf0e9519975d5e363f82901747ae286ecf15e71e90fbb4c51f. 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/ZAUM72101001.
Ek Sing Vir Jou Bles Vol 2 & 10 Jaar Se Grootste Treffers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4286004ea3419533ec5067193db0e9ed386e6bf758bf3920faf8f624db6273b9. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/ZAE531100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873b7fb2c6346856b89be57c8cb8a18a4c1a7cda8c69dd839e5c5966b93176eb. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:34:08Z), 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/ZAE531100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598323176445b02c65b1cde7c5fd5c593a6b3e72f4ecc300eb2145b98874c224. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ZAE531100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb659e22c3eea34d979064786c55a610ca92ce781419c4bff654041f2ce06a266. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ZAE531100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c4cf40672dba0d658073a2c548790500f0462c3f0e5a2674f78dea22a53b01. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZAE531300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e011052b200fc1200b5daee7ba5b392dda23c91e2f089caaf9bfd1eb33447c8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:49:16Z), 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/ZAE531300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e076896b3c66bf2bc4f5f6532733c9faab87c74f7236a166da11900110af27. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZAE531300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b172926701a8cafe7c09300f7b4e774a7027da3e2241d53b0c0522755eee1d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZAE531300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc206c976fdec5b8d1c35e9be6e593ca9185e52ea0ae0ec19f2e5c1ffbbb93865. 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/ZAE531300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c73e48ad350cb0b48edd961f3261ba5147a787b4af60c7ebefd525e918ccd62. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZAE531300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85573e2f0ef2407bd3fe05f950355582ce4fc7c861dcc7d71e1d06625af9df29. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZAE531300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2f147acaee26f5d4797f4e843ce63a216ff9c1a40227a3f0432f8df623bbc8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAE531300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b4708680bb91a524eb0f18b90864947f83b75f43b16ff446ef1290ac359621. 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/ZAE531300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5f947c8c3f9a2e71af9c8a3bec24b4a700cc751a33e8b1c2542aebb6aac1f0. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ZAE531300005.
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 0x62cbd1b2ccf6559c3f853a63b60970ba46518ee15dfae2a31985a67753f18971. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/ZAE531300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434ea4230389f28d164bb9afd20beb47a9394d8e04392272b797055a6e27d783. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ZAE531300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb723976b7bd815584ca1b5e5dd89b214d5314a65dbba6c553458ee91aeb222c1. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ZAE531300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f438d6500f76b592273dd29c82f965e8256d058199da34889b3c49bd2b2815. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ZAE531300016.
Ek Sing Vir Jou Bles Vol.2 en 10 Jaar se Grootste Treffers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7929aba7e0d56d0afb4e03e411bc48e4da7ed5892abf920ae85f24d0fcbaa083. 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/ZAA011400977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873b7fb2c6346856b89be57c8cb8a18a4c1a7cda8c69dd839e5c5966b93176eb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ZAE531100315.