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 0x09012128b8c0a245c3b00aac843c614bdab392e9b276c15900d352c1963e9a56. 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/a578a8df-994a-442d-90fe-0cf014e6736a.json and https://artists.proofprofile.net/proofs/artist/a578a8df-994a-442d-90fe-0cf014e6736a.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 0x10fed4e8a2cdeb4502f43871763fe72be977f6d19a1001cc28dca1c5456c2e59. 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/CH7812403109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5a8e461ccefdba55246605df4822bbc29c3c9d952b1577ee39f629cdbb7e3e. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZFZ72543374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b47679034e9e70cfa0fcb004b71a8f4a3158e703008431960082ff7002a036. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:26:03Z), 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/QZES52575179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf8e361a56664a4489867c11c6b47e51029c7712a22d52c3ead45bd58a5a622. 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/QZES92504750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53789ad910fe132a1b16513422754935641ee93d762350abb1f58a1b4d03380. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6G2555117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5919f655db58d981295f6f2018cf5698d6d1e4398ecc36ed706d38e57cd78479. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:01:48Z), 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/QZTAY2572428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b338bfc1163066552cd70a66c6f5e6f4b57e729fec843bb96a31c8043d23e9d. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZTBB2544468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c6cf15089f26ad5f08dc3d6584c8d2973e7dadd6f66d5a71baa5fc56af45d1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEKF22401195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df12419a7d5307516e94349b08df3779450fba1d649156621a55f7d005d96dd. 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/CH7812412283.
PULL UP (feat. Erda, AYJEN, Dago315 & B4YAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e7646a9d94e922d74b747205c13f26b08531802f9add3b62f4fdcb8a88cdd7. 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/DEKF22401793.
German drive (feat. AYJEN, Mazhkal, LIYA, Canito44 & B4YAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a60cf7f637fe39739d5af767d20ca9b9c5e1a8358ad5625655dab452d8762c7. 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/DEKF22401677.
RLR2 - Runde 3 - Tag 5: Wenn Welten kollidieren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1985ddea90c7158ab579f39dfafcdaecdb825a3c805e7cd301a17f09534f662a. 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/DEKF22401935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12285cc6a0db5675acc984ee3c3f530b0fbbe34e4cb3d18ed0c165c6d75cfc4. 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/DEKF22500013.
Miami Vice (feat. LeoLaBandit, ALECO, Mocro & B4YAN)
RLR2 - Runde 3 - Tag 3: Im Schatten der Karte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95a93fa4b8b1016830b063eb73d9ba5415bd89d7cf2d73e506b73c15c60cd1a. 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/DEKF22401828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270dedb8b485e719fc06096d3650426c35ca76bb85c54c272af956ce34ca2c3a. 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/DEKF22401832.