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 0xaae85e4f865ac26bcee3601233e701683f3baa74865aac834d28acbb1e2cf7fc. 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/37a39ef5-80ba-479f-b74f-e942c1e961ca.json and https://artists.proofprofile.net/proofs/artist/37a39ef5-80ba-479f-b74f-e942c1e961ca.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 0xcd188f0a7a6d7eaa535dddea8f2919f5c08c6a9b37fab6bfbd7ae716c58bad7e. 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/US3DF2230345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9cb6772f13210324106e19cc92df5cc965689b61e1d67a99bbb4517eb0cf07. 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/US3DF2296933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38041c150456914285febe630c5e39fb65b04c5f20b46b6171179133365853f. 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/USANG2217847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca91dd748d817017a8fade4614866a9cd42f65159236c5e0ed249403372160f. 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/USANG2217854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734e873f150668041112d99090a90e02b8b34dc274ead663ab0cb3be5472f15e. 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/USANG2217858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4914dc930bcffbb7547162414642a1d6300afffcd644141389da68ef45efae. 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/USANG2217861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5710b4a7a27a701614c33d46c87210a258602a2d45916f36a0105f623f87e9. 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/USANG2217864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4055d45edd9743a0a899f5f83342ce40b226755cb5b5a761ab7d4031aecca14e. 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/USANG2217865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501aab1c85a817acd9b89818d9df6c2b8413c5bfb7cca4cbbb9dd2029d38a906. 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/USANG2217867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfd34d96f393363e683eda5715d256a3a51266a14164b56e9234e09be52d831. 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/US3DF2167429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00054d4951f1d3d6906f800e44b511f9a507ab74f381670c37f461eb7fe55a0. 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/US3DF2167436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911b1cf41d3096955fc4bd75e5e7d4b61c29e836bebd1468ede4bfee767d7422. 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/USANG2155955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe627eb01b68d9314236037b787b4ddab9d3789f6d23cd8174709ad112113dea1. 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/USANG2155962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1164ed91e3e69ce115e064641441c543fa7d793cdbb095d9a8cef9eba7d0d2ea. 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/USANG2155963.
1 En 1 Millon Cigarrito Pa´ Relajar (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e877632e2768087f2667ca06772ff6041255773bf39ae4fa3ae3344ed8ec03. 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/US3DF1947904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6813d4d08aab430fb40cf107b91b6a7a7602da112e7af267ea4585defd94b938. 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/US3DF1947908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beaebb8acccc5c749edb066392db57ebb94646ae29258b312312d242862b772. 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/ARC571802446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f8e6b727b53b6abb129321028f0bd3fcd60c4ebfb1059cc82f1911c6801eb0. 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/ARC571802447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3d6a2dcd344f1e709d2c15693c81c070d716cad4761016982403c64f4d8f9f. 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/ARC571802448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8afc0d29241b17c6fbae1858f6a0539be72e1e187cbcb090a33307d58892611. 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/ARC571802451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81a8552d5a4ffb4cc005401dd42ae8d65aca02cd10b3875f25cad4df9da0e0c. 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/ARC571802452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f170d24cd2628f36b54ce5a38078dbc0006288f41816b18fd9c56b765ca31b8. 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/ARC571802453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02311f7371502f6a7c435ad91b7edef79b8fa3cee1a9fd212dcbfb83bd5863e6. 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/TCACU1697910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb381e1dee69a8ed2a4af47ddbd69ccd2a0d1ce76fe8886ceab3ecd5693786cfa. 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/TCAJK2596481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393c7610785711a576bb1b8d6fce7328f711ebc6a8559187d924b43537d6ad4. 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/QZQMB2108649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03902618b2673d7ec2d6ae190ce25164993423fbb908ee2e3d2de92a6ee07c53. 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/QZQMB2108401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8de7ceb50c2d970eae85170da39da2a876770122ef288f681c68172e14ee88. 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/QZQMB2108063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebdd0aaba31de5c5af57cf3247680ccf28c0b4ca52354aebe366e70a52c57a5. 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/QZQMB2107914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feeb55f5d5d07503e6ac5b9d4f3ca66af0b04b3ec7720a3729eab7c7021b3ca. 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/GBRKQ2490104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b8606b54a9b41742f2c6eba58882392beac57433e0f46a4c6e6e6286681f56. 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/USANG2295413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f943167125c43dc9e4e66e09ffaf8da1c803c15624a7a707b187a406f84bc77. 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/USANG2257735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1614d5da683d31dcc684ac9c2c7d5c27370077999a121f6c3abe4b74cb4f05. 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/USANG2254794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871e455ac862998aac4e16e558adc63364a3b1f23c4cd72b2d7dc3e01ddb2b36. 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/US3DF2259797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88810781e25e2551699cd3bd1f83f0205c6c822ec918a958245531b49622cc1. 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/US3DF2256796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4e029b94268b50f45df257a509364e0b4b2f8453473971808409a9be44fe08. 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/US3DF2237919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6abf7d1b36b18028e4863c67eae38603441960f340684825ad994f197f778f9. 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/US3DF2226117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bc3ed18eef5adfd20dbed7aac9a28236606b4fa0a7e21277eeea2c66869cef. 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/QM3DF2110745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a7e36af6b19f093ea9ea7fb6ef605da75a0d1c22b42b154abacfd3dd9abfb9. 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/USANG2193307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf9152f160168904fdda56f9620a5a2369068f3fe705a4002a9c4d51e963f65. 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/USANG2153748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f722c7da33f3a32b36dca7a5e98349319d5f001c16d76f86d6e4d9f273897d. 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/TCAHM2356766.