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 0x0697157966f0981c247b0ea87c1df0ed29b0acd646d935e06182a7ab77403695. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9965f7ca-8a51-429c-a995-4c50c56f18b9.json and https://artists.proofprofile.net/proofs/artist/9965f7ca-8a51-429c-a995-4c50c56f18b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Armoniosi concerti sopra la chitarra spagnuola: Chiaccona in parte variate alla vera spagnuola
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 0xc4d7e730b5cf36106cd0301aee138adb0366940d262c98e1e6701085a90e9369. 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/GBLLH1957403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7c26907bed6df3f5c61f87af6669865f0fdbe5abce998a169fcb6126ef23af. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBLLH1957404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f97c4cf98a0c5fd27e59b9e4a5a7635d44e20455b60ace434a11ee6c7854e14. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBLLH1957406.
Ahlam Babiliyya - Babylonian Dreams (Modern Iraqi Maqam Music for Oud and Percussion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b9dfaebb78a362e7322c608ca32e4dc2ae5f8b24b8db8989214427bdf5cd1d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEAC61191501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56067d5fa299f63b8af57236db3c97f16a4aba83177226783317db8131413c30. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEAC61191502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96600ff00ca0109c973b3604d5211aeccaafa9f7bd1329342b1943ce5cf5f20d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEAC61191503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c6e9ef54df5d9e7773aa0a9b373abab5b74983261491651787268e788bf541. 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/DEAC61191504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10892d107f0a49747ea86602620c19f2af8fecc3af9c1c429ea50e3f2f9b2d70. 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/DEAC61191505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b15307e5e8045ea741f58b08e98ce4885a6b5b156974d58a9e0aec31cbf5592. 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/DEAC61191506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c53066593022f0e0ffc801f7903db5d52e751afe5c3d68476e2d7a5750ba9ba. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEAC61191507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211e561803d240ac5cf0c5de6f311941b93280d62589d7233079d36bc2d74952. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEAC61191508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20e823bef7283a18a3676e9fb78596c620cee23211466292b5498b3809d18c5. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/DEAC61191509.
Nora Thiele solo - Modern Oriental Frame Drums
Roots Revival Series - Ashik (Live at Odeon Theater Vienna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e1d1e02b99b70fdbcab0e8a99b03461629e42bd82d3fd52d1dff9f867adf15. 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/QZPJ32141813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a4e8d7b69470cfdf04aca45e16c55e1fad58f6bb9366d88e15a2966b70afb8. 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/QZPJ32141814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78e8e5e85e56e50c5855caf5f0837906abdbe2bec809c6ad92f4001f6af49ab. 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/QZPJ32141815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17da40617b73384f952d724bff50d25c7ed1a6da78b7bdc4f288b370fed9a3e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZPJ32141816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a3078272903c249cfd60c13fa121083cc59a646448a42062b71925ca49cbbf. 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/QZPJ32141817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94997209dc158a2488239e1dce539bd2cf5ad5dcdeefbdaab69f21681b4ab7a5. 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/QZPJ32141818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f152f3970906a1fcaad73d391123292c3d7ae268865436e61e6028763fa7cd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZPJ32141819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd52be99a7ffec777a1ff2ad43cbf0e8045115b2b743a5fa8b85ab46c2c9ecb. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZPJ32141820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0425b279106ff19db296eb5f81b9823d67ecaece0d83ff6cc32038895430da. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZPJ32141821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba13fc17a747fc5b6e8c5119019f2568e52dc5afe1d1d8c98e41bc9e39fee5c3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZPJ32141822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4584145485f2a545229f914b5f228ef2b7987651e68d010cc94c96eb69bb6b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEU652201401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf37b0ae36879085b9a01ca65c6c1ae97f235bf47d78b1caed7330448badc60. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEU652201402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd48eeed5c981bed46b477f0d05fe503a82f60aef6382f2f294a38e89c0af6d1. 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/DEU652201403.
The Historical Trombone (The Renaissance Trombone)