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 0xd8dfc0ba7208589089f6899a296aa74bd1db0da869a3e31490e648feaa1f0fe0. 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/64d2a7b9-c2cc-4beb-b9af-058817cc4998.json and https://artists.proofprofile.net/proofs/artist/64d2a7b9-c2cc-4beb-b9af-058817cc4998.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pizzica la taranta (Il folklore del Salento edizione 2015)
Samsara Beach Sensation Summer Compilation 2012
Pizzica la taranta (Il folklore del salento)
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 0x1ce192642b7d27422e92118be997c6fdf51f1c1218c0ce38618581efafa90c32. 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/FR6V81363428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb55a4afd62064bee238a3edc150830e187dea61d3f504007b86c2e8d3ea9fa0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:06:50Z), 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/FR6V81363415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7b0c25b55e6c1c78a2febc66b8eae5502a5c2836d0b3895545cf20e41d8cb6. 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/FR6V81363417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60a0cec5b89d2eaa23e6ab74af8d7a652dee76b97690690c8d3f3d33aa37aee. 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/FR6V81363431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f4f9dba27b85d37982fcdaad4e8d9c0f5c780eb8b48704d070b39f0af8b270. 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/FR6V81363433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8f40a68fed3b1d5ae789cfca17539ed4ce87221c082fa87b427bd533f1ffaf. 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/FR6V81363422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466375b00d1f62ac6006a8dab77a8d6c59812c1278cc6a678f5c8b96a5b7b09a. 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/FR6V81363424.
Pizzica la taranta, Vol. 2 (Il folkore del Salento)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4277da6b0be43a92256114cc312f964fc31c007ca071218fb6287158ef3a9070. 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/TCAIF2468830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2448a487f10ced8b0e3f5c31926963b250db4a0864980fbd59e5a5263efc0a. 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/TCAGD2211156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c111c62b32cc79514d788f9813d44721f8c9f868c42074d8dd2556aa4f3ee81. 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/TCAGD2211162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8080003805f2455bf09401756ccf98f19ed5badcadc89fee45b798f3d4fce07e. 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/TCAGD2211197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f5ae14320125ff58d95453729b42f6a927abdabb770db628918bd70b803c0c. 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/TCAGD2215493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a404cb6869c99f38eedd5e149cb142f5de0feff7d49fa17094dfa0b66b4dfb. 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/TCAGD2215497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed17769f172e40abc135ad94f418e828f12279884b7af0ec91905373b5208eb6. 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/TCAGD2215506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22b1ac291ba6a285175c5b92fd53273e1777c329470b0c693de82fbfcf3fab4. 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/TCAGD2215510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7014384affd300de03746670f2a4b3fa8f79718084e06cbd00433dc10a62e19. 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/TCAGD2215516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2c22cd8e756832e6a04ba9c9ae3c29dd2efe9e4724586bfdd47ba68a05e8e0. 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/TCAGD2215519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ed78b550e780e9e6d5760fb9c4963421fe054071d2cf135f104fdc34dbf65b. 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/TCAGD2215529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e92c7da4aec79e2f40067b3c65ca165260b5a42ba81b91d9c6636700350dacb. 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/ITMTJ1800094.
Pizzica & Salento (La musica della taranta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a87ecc68f65be408e11567f39aac28e068e17a3fd3836a365ddf73ea595304. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITD541701820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201cf05e690e8e5a9ebd9704acf4c5ff3aef11564b426c72ac3a63455761b741. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:55:00Z), 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/ITD541701822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1bc7ab9d4b7bbf61a20d4e91e58e2b2f65eb0baf3ac62c8143a9af93b200f3. 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/ITD541701824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7b609df14824016da91491995d100357a5101265a1eb873d66763accdc4c3b. 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/ITD541701829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6177d6724a9b58eb168a74f8df4955fe2810940b955a84ebbb64ed4243a58910. 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/ITD541701830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae2f6821fce412768f00cec5f5a8955212da9521aac98dd429cf816312da753. 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/ITD541701831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e59290b9ef350238f3948e024f4a5e0bc9498c4adfdafa1dce473635715a41e. 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/ITD541701832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92053ad6342d3345f5df77498ff16a71c5189acb7bae170a900672b151c4deb. 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/ITD541701833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd869fb8ce0c581d2c7988578a055c1c9d02b57f30e7c18011f2adddf6ab75e. 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/ITD541701835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cffe662434621b26b0cd3c7a3f105a8d7bd5ebc612ca68d5b4fc19900471407. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ITD541701836.
Pizzica la taranta (Il Folklore del Salento - Edizione 2014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa000074988dbccd1063b732dffd15a24ac9d92643e3c97e918f66f6602f6f563. 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/FR10S1540415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ee3d0e53ac754cd27335e7aeab5a3d08af39d448f6c1e1bba20349c8be76d. 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/FR10S1540437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cb1dda2bcd992da9fbd1db31dd5916aed9668770122b0fd3ef46c95fea859a. 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/FR10S1540424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf123e754b067e1c656ab6a94e129ab21b486f8022fde476498b9c11bbcb03566. 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/FR10S1540427.