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 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 0xf05e4cdc73a5f5d0653dd8019d1650ece1c8fe3bcc6838f7c276cad3b0cbfbc3. 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/714f1a0d-94bb-4017-93ff-50bebaf1320c.json and https://artists.proofprofile.net/proofs/artist/714f1a0d-94bb-4017-93ff-50bebaf1320c.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 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 0xb0bfcd8cabd28e2e91dd0cafc3b139a44e0e4316940dee93d48b37cd9c7159e3. 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/TRBMB1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e433a817c11b9bb1a95a4d4ae7f5e098ba780af186e335adf3256ae041f2be0. 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/TRBMB1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d9a35bc046287cbb11f624b99dc1cad08c92c471ece04fb1bd3e62731c0722. 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/TRBMB1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232097ef73c7b90f41c3f6b6a94ce3afcff3436a51227e74432df17e5afa3fdf. 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/TRBMB1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4370d6ee8787e00eb08ceb03cc4d0185c0c6dd61eff0ecfe41e64f9157c792. 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/TRBMB1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e070f0ed20a91c37506e8ab069b4d52a00393353144d6728d224aaa88f771c7. 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/TRBMB1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798e708f58a9ecca5495e258738fb6977962865f737dae0ef9dae08d98c92419. 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/TRBMB1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09550b2118d7e0f96feed9324330136a8079b0d53fcb5e162385f80e3a9b9480. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TR3380700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6438b7fd4b3747adaaa09e51bdd3baf0f4d4a1d22e15e732930d7be1494c4522. 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/TR3380700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c4cb25f8301bddfaeeb0aed027a31449637375b9498ae268948b5ec16860bd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TR3380700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed5125426a228dafcecbc0e6eab8df590fb9bd56904d78ac41c9da0673a4f9a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:43:41Z), 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/TR3380700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c59e8c660189e2bf64b864027e7de31c549e33cb24857b658183c52428b1e0. 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/TR3380700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8034ae87ec5e29397497c41b74d66b39ba9e141a5a30983fb9e1e29674eb73c3. 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/TR3381100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17c6865b7e48ef3fd720a5d67d5ed2372d34033fff39fa92dd79aba387acfd1. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/TR3381100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fafa2b5acc520c0c0ad260194cd1faacbf0f081ff86247820af67c9708066b. 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/TR3381100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979646995477068c8b46629554bbc166bd7be4e497fad8d909c00e161d8e60b4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TR3381100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb923ab0b7efcee543c1bcc924f6bb1f31da8264df5e4246b2f0b50d793272c1a. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TR3381100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b44a5e4c445dce619690d87517dfc7c111af7f312a2d539ef2b89be3f7fcf59. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TR3381100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9a37a81b51dabd87853125a3739b9fd82f8bd673fddc9e5f1d5fb04de40749. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TR3381100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48bd016a524ae95155b5ee7a252fca000beddeacc3320db5300e1e6275fdd80. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TR3381100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705b7f6831608eaea359ce55cfa94e2526b49c83786be61d4a81bab09879514c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TR6792503084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2826a9a5a86e939b79522d7093eda1be2607bd5e3f7916b42e2ff545909fe0ce. 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/TR0361700252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1886b8848761709c61b88b04de7a823b0210fde977d627d665afd8357da79cb8. 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/TR6792101643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691b7af454c87175d3e8b877a5880f22c275132835c577f15bfcee87b68bd3cc. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USDY41755870.
30. Akbank Caz Festivali: Dün, Bugün, Yarin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674286a045c64391f891ff85fa89d2dadab4700454a230ae6b9742ab035d5693. 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/QMBZ92034789.