thumb|215x215px|Port of Aden from the ISS, 2016 Aden (; ; ) is an ancient port city in the southern part of the Arabian peninsula, on the north coast of the Gulf of Aden, positioned near the eastern
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 0xafc4941d5eb50c013eae50214f870eb6d26e15c1f44f66fcd521905dca5b5fb2. 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/6f6b41ef-cb89-47a1-a382-f334c9c94de7.json and https://artists.proofprofile.net/proofs/artist/6f6b41ef-cb89-47a1-a382-f334c9c94de7.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 0xab71b3d3f475714bf471bd52dfbd89a366f87ca6fc30454cea0dcd63a3f4f49f. 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/SE5752198141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea006779357f47ba3e40541cb37e261f3befaa12769d0bb97937e91145a238c. 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/SE5752198142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32870fe56e5464be9b647a7f92c23225d4e9ce7522fe3fa0b10abcfaeb60b6dc. 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/SE5752198143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a122e99876ad74634d5c4652c98e4969d426046ec6e54b667a3d66cbeb60bc. 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/SE5752198144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b16a2bf856105cc795ad67413f8edb94013de8055dfc94e8265ff6de88132f. 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/SE5752198145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75bd7094cb7b30c30d3c1435bdae332fe354085d5b8c29ed62340d85fe4f9df. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/SE5752198146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda86249393bf3c8d0948e51f6f0fe793d859444ab8791fd9c66c60659bca7dd. 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/SE5752198147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d0b9b2de0fc7a72278bf5bf530f0b8ce94d4ccf26306b0b7531c6245fbf169. 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/SE5752198148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197528e76fba1d5bcc8e1b72e49170ceefdbc4bdd1ad2c0a14550a16892d1baa. 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/SE5752161811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247a88bc59afbc6175e3e316a2629005167cd183f1aaf7e8b1ab63545fd516b1. 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/SE5752198149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a663b01581d59af5e71c9119d3a70c411314a019e13c004373487456c03161. 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/SE5752198150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c090ed3b873d146ae9294eb268b2d88c12a537f180220071464b38cda51ae2. 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/SE5752198151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225fa0cea9cb162d14faaab271ceca13f8d2e08c4da855e6c8275ba6edcabb55. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/SE5751954792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7a1a9eea5ae0596acab930fca347aed18711c571705ed65bb30e8ac65ac960. 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/QMPKX1838572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5058ee52a708583b385872ce14eba58a99579b9bd66923868a1f7253a711e2bb. 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/SEYWK1700502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a50280e8126d390a0fb21c85202eda8dcfef8ba395372d3cf2bed6c54bf6fb8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6Z22200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d1edc8cc415ee2aef1cedcd0e7fda89e350a317537303a4975ea8c1a3ec23d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE56I2000121.