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 0x7e5c3622e2adcc919b9cf28dd3e7b7f194d8964e017fc3e5d4d351e1256ef5ee. 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/e9299190-1d52-4b42-93f5-f47d5d463cd6.json and https://artists.proofprofile.net/proofs/artist/e9299190-1d52-4b42-93f5-f47d5d463cd6.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 0x248bde5572f07fe1ecf583fb2457d3812491d21ae1e0e7c6773517c44e641f91. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USJ3V1050020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1006b3d8ee856c34e21cb6e77c095f506a80137597a2a6eba0600871bcf0cd92. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USJ3V1050025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4890b1f76c0611f286dcf6628cc46e2053dda58300b28a90b56f1ee3af99911. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USJ3V1050026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07b5bef47a085851ba9b03ea5c5b41b8b85e47e986b762ab5aecdbd9d2025ea. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USJ3V1050028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b3cb51a0b0d55f2227bbd247dc6f913829d55788a04f19fcd63d940c23aef6. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USJ3V1050029.
Solo Exitos Vol. 1. Música de Guatemala para los Latinos (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8e552305737ab80eb666b91a8c4a2b11434e2fbe164fe1358de2b25dee928d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GTA011500444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf9b8e9f5a4dca83c8071a7f2e8163a961b8d992fd5727bd35f2d8d79ecac02. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GTA011500448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0e35e51176bebf330ffa5f0460eb10fc762d4c914508bb4a99fe78ec90c41d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GTA011500450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131937900d79d553c37a5beac43b7ccfea7edb0a3a9ad0cf06fa417fe5221381. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GTA010706992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdfced8eef144d5cdb2a1cf03ec8bcb2830c5d038cdad51071c54f44ed49f3b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GTA010707781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf666d6be361e9cc9d17720502550ed81582171a983cb1eaa22fa6a4cd7587ca. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/GTA010702814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090067d3f34059657e39d65310c4cbe3790605b74944b42435905dd86981fb72. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/GTA010703461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a490a01392eaddbfdfae05d8a28517dab4ea05540f3d2334c5bb1f48568e768. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/GTA010702808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e684b615595efde89e21b66801d9b9ea09d2cd185826d14a87e5f980c83380. 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/GTA010703469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640bd0734597213cc7c0654eaaae76c27be04803b220ab0051ce29d7fdc84ca1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/GTA010703457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe1c196623652ed68795448a854ffb130daef78607b705163109a81e4c27443. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GTA010703455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2319aaf6a002e5f785f7c50aa65e7ba579556dfc26d31285e1c5da1c193103a1. 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/GTA010707601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4537f5bf240905c5bfe93496ceca68541e38803a7c18a4e8aae4d3278f74a2. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GTA010703459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667651a09aa2c5bfb9a297ea9c3ee9477d88f4bbe3ec577f584e3820789a5e02. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GTA010702806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1558da76955fc307179dcbea41c77d2cce93369f879ba3f48be0c36f36970ba. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/GTA010703466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aa77d7a8038ba06ea1d9b8c5b23ae83397d5ad88593b8d72834c4333902639. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/GTA010707437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6922764ad9d4056ee2e5415ffbd52d27d4abc5a808e43492eb5c9287287e7c2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GTA010703465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8fdbdeeb6cd9e7a783eb01f48e07a253bb37a2b1ff155948906b37ea165ccd. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/GTA010706995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0a417e67a30a5304458bc2c4a9ec1085cf002f1141ac243e9318e0c9b6f7e9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GTA010706996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d40e81effda265c68f92eb77caf14315a3b0096f90185b65cbfa702b2e86eb0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/GTA010706997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b99652757267184fc8590ce226f1c635566f2f866f68d835616ebaea0ffe8d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GTA010703468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0361a7440dffd26781611a641f34c551adb8ee9c048fa6bb930556c3676f1dcd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GTA010706998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bbdbc9b96fb0663606de10e2ff93235ad67463e39dfc366814b7dcf64d6a54. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GTA010707000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357ee2862994715bbe090eef203c74b74d7f5ac7478456899e83fea36c2c5bac. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USJ3V2077019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cd019b5877fdc862280c709a238276de6ae80348507bc4b2e90adf8dde2f42. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USJ3V2077020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f14c5aa15e7e8bb8b89bd319118b6dc1f7faab2ba228ee6449a1db2dd252fd. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USJ3V2077022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad5207ad29dc8af5a80e15bee57d250ca8cd7658ced7a868255514319d7964a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USJ3V2077025.