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 0x5c88ad7740eaae09275dcd6f7dba2b5e04208148078f80917e5b7eebe4bde471. 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/4a58e851-3542-4748-a3d6-c173c070c4b6.json and https://artists.proofprofile.net/proofs/artist/4a58e851-3542-4748-a3d6-c173c070c4b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kalamatiana Egiotisa/ Skali kale mou skali/ Ti na sou po soultana mou/ Samiotisa/ To fouro
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 0xa3ed78652a095b32ec68cd5d1dad19c283642795ef0a6c368f9da7e52af9144a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:34:00Z), 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/USA371518122.
The Golden Decade of Greek Music: 1960-70
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd352823be93a3507ae602a938ba5b9a34ecad2b304f6a90a13ae205e3efd6199. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USA371515358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ed5fc0dbcea2a3f8dfae80ca9c4df1235f2ce2b0e20c295ec40ea9e0d7f0db. 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/USA371445541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e172eab1d1f60f3bc8885a63bc69f63a1ec72fa94d0abb9f389d613d8435c2d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USA371445542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55376db30f21011592c7fe8765fccc90c9106b75d0716f6425378269c2e772b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USA371445543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6604dbb9b45a8a8af7e66fdb4bc08399781ae9a114062b5ec8c438181c288873. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USA371445544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e9d0f97dd171b9b445c0af0eb2d462171cc365820503ad27055f5de9c5e09a. 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/USA371445545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f4495a6d1d0a3eb37db80d915fe5dda2d7efb5bc6d5d27d50cd1d292b9db3f. 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/USA371445546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618c0559e8bc2e2f4390d4bd00cee694b599078c7fdd87148c8cba347f363696. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA371445547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7739aa5b3e011d07fc2bf392243823f09a8f1aa1fc2706dbd710755d94f0954f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA371445548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072921229054af0278b60ca6cf7a9af2aaf0a751ef836e25477b92d751e089d3. 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/USA371445549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2efd7835d7e33593fa10d8a60036c3d9f1d1f7d00e037fbac75cd3c5b466113. 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/USA371445550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9bfa7cf2f82b721766c5e76507e33ac14b2f96d8dc51ab8375babcb4e89ce9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:42:12Z), 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/USA371445551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16269ce32a5784f21eb66d4392d2ff7472e97527e419e1b342462e15b45a5f24. 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/USA371445552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e4a13090b259fab6024181aaf35cf9fea8f9e521d3885b9e48a411b9f9fa80. 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/USA371445553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42699a06231a13f26d397596449d49f62f92671f9476db578654e3a3902a270f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USA371445554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ed7bd82700ed6e897f3482e2dff26fac8026b41522f73bce1a3b71edac94d1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA371445555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea88f91521a00381279241f73a6219776ad6baf11f5ffdaaddc2c7111edc7ec1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA371445556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad388a1572e5c4b3e28b73f905622e9f75b68a9d37e9f3c5c96865750b6c22e. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USA371517974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19b17d474ea8bbf6e8f08077570cb062745e7806a3a204214c4a66667df394c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USA371406738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19df970a6a22759edf056028b60687975e648bc46a690756bf7495cc8c28a4b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USA371406740.