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 0xc775ecc364ce04336d2097aaaf812600d180ebfe332aca0be1360bbcaf832744. 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/28bd78d3-868d-4c65-9072-13044848ef4d.json and https://artists.proofprofile.net/proofs/artist/28bd78d3-868d-4c65-9072-13044848ef4d.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 0x4ac863bd0c4c3bcca6dfa942e10a9cb3ffc63c11032dd9db4ee2fa79e2dbe697. 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/QZNJX2483894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddcadb965eed709dca6f19202c0ce61ee6fd2135ebd33ee6eeebed0a078682b. 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/US7VG2517170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ae69d76a2951598ed8545dd0a029e196d4ebc645af36c90e4ab0d26b7603e6. 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/QZGLM2554565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086ad1c4698dc01de32c28f619c2dd4b554839e5844dc86ce948c26e9f11b057. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/BCM9B2300625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ee2871924c2278284bbef4df33111d87cccac1280e291b88fb8c99a3ed8f27. 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/GXD7V2592144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28083a5b637cfd23b83d15dc819e21b9b60ee103cdac6eae03f2f36b4af66629. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BCM9B2500118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99d636bf462c3dd14a7f3e87ea0b9bac1e1af8c4bc662ee27e2a6914204980f. 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/BC3PG2500184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc906c1e6df3548d679c1c03e54656228cc9c4385334f5e4ebc2d37f916b0741. 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/ES23F2400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb4f251e88f07b57b8a5d4f081eca0bf07b3baefb76fad35cec1f987c39f5cc. 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/BCM9B2402060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ab20b3cb5e06a243fce31dba3d3d7c633be0aeeceb73b4d7d1011e1141d66b. 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/BC3PG2403709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0c4d62bc237d70aa23adc6ee3b6b6d2d806d070928283f7d5ab431c97e3994. 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/AUGBT2442966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dccbca4a0cabcdc757e9f8576dc2ec8cb2867090af262f6c95933a42c250b8. 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/BCM9B2401646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf090bdff28d1a00b7251d676358d6312f2c936000396593d0f3c657def903227. 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/BCM9B2401632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceaaecb7f4b9f666f986f2ce90d21e1ceea2fa6a1aee134f0f2c4d3b176f363. 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/BCM9B2401635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d91365e9bcf505b6ac70b031200e5328f251707661656596675f4113abd5702. 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/AUGBT2428580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5a6991b54e649dc8951c1edd406c8c4c37a654b203eb297f8d62e5230812d0. 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/BCM9B2401252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618f566b02b48d4c978e9d097527d68e5d8715a04783c17bf03fc5f1f19334e9. 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/BCM9B2401249.
Aí Aí Que Legal (Aí Aí Que Fenomenal) [Versão Piseiro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6888312549c4ae5184087462696a269eb0a7c809fd1cfa7d0ae712ceade5b34e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BCM9B2400998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339f1a7c1bfc1d4abdd6e57e29bb15927a0c5caa83bca3901cfa8ceae430355b. 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/BCM9B2400815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73865582334fac00b46ed2890296a496c57e4fd98e672a3b92db49daaa8fc77. 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/BCM9B2400890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f2e73d75a64cda34f96d9f74b7ea489641efb05d006335d9f73b361fe60307. 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/QZMZ92466553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94e6ff92626cb275d747907007fcc5f74e1b10b1231398990be95ade28bc9df. 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/QZNJZ2417530.