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 0xd2a0a6ba0ab63b0b8fb548337b9254f1c5466a9dede2311f67e301f47c211224. 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/43db14f8-6850-4083-aa6e-c86c8c952bb5.json and https://artists.proofprofile.net/proofs/artist/43db14f8-6850-4083-aa6e-c86c8c952bb5.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd295dceb471328cbd9471620a7e0439346452b25ccbeb0fecaa00b2a3f2a8d9. 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/QM4TW2459858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87a3b7ac006aca8121f7d83dbbf6307a2197e08bea453ad5ade3eb70a1f8dbb. 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/QM6P42204549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe093e3a139b48cc69fe995e6dc8660809a600a09e6f7e42482f1be9396967596. 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/QZNJX2494094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864db0cb3a13bc7828799fba875fa7df44c2368ab2a14e23074121e8dd30eaf5. 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/QZNWX2406655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe580a77b3e1da4ab02001b51c9c34e39eedd251eb2bd7bff2be15489beb3f3b6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJX2424732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ecf1247fd7f1243b6e17308e8ddffe966750af7080b1250fb17f7254c10694. 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/QZGLM2471516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e3e02ce18e63a8dabbfed700bd92aa4088c277659e0db23af9e4d65481136c. 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/QZ5AB2447686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4c4463e70501a2a5ce21e22c212708a4b48e832aab8cce2dae2b39128ac66d. 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/QZNJY2371322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcfb319d52fd84655faf0fb3e64c86d4c7fdaabef202a17943c51c60efa92d8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62350105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabdf25534ed9594f2ca615245e6c7e825dac1c961d143c6cf1d8637c1a36424. 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/AUMEV2327011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc768344be8e5c9160fe10b124d95834874a1ceaf65da44ba2f377e71db093e. 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/QZ5AB2323634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb15afb64533f2a089ce031e0e144e31acc3f1e7d3c4b338a4288800037eaa6d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZSYP2270200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe286e6f6c6c17a1ddb382e8fc2d3f36328dedda70597519440dd90809c5439. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZSYP2201871.
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 0xc36ec4dd69b41598f861f6989ad15d7c1831c238b79109ee55d73ef9fcb7b26f. 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/QZS7J2265102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22550fe9c6a38c2d6fccf6273461f6f82eb9f318065226f69bb67f3b5e16fcd. 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/QZS7J2208365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6621533c8321108a2f1e4f555366233c2e189667104ab2b86b7881d7416a9f. 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/QZS7J2250614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb15971bc4f387c2fc7d925ed5bbf56a82cc6e6567766cf40cfd1e2b9bbb032d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZQAY2264898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace9a39866c0427b039e92a058500e913288d9d44c10a31d291427e52f3ea3c1. 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/QZQAY2200438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41476ae1805e9ce141388c010853ffea657053f2777199d0c908334654d44853. 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/GBWUL2144606.
Buenos Aires (Obvio) - La Ruta Del Perreo
Buenos Aires (Obvio) [La Ruta Del Perreo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2beb6c9f28ce07fa8607c34d0bb3d3fe239d55a6e6da742a5f710f57d4405305. 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/QZZ662359950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2beb6c9f28ce07fa8607c34d0bb3d3fe239d55a6e6da742a5f710f57d4405305. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZZ662359950.