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 0x23f51820f3ae7b78dfa290420df335a909925b6b8557b4610b9d913fd2b8694e. 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/4bf970d1-8dae-436d-a4ed-37eccaf85da1.json and https://artists.proofprofile.net/proofs/artist/4bf970d1-8dae-436d-a4ed-37eccaf85da1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
LOS PRIMERITOS DE COLOMBIA (LIVE SESSION)
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 0x34a0a816bd68f9bc4da819b8e224881aa9a1b7737f397b042421621f2a11faea. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZHN72454497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc741a3633d26907e311656a7021481d3f5f381f800b1eac64c681642673f3a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6G2412778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c062f4db2a7e9e8a75c70605e913daea29bf7b00905a981c00ec499266a4ba. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZK6G2412780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1456dc47f7700604616c670fc47f54c7915ae737f347f868950aad864503cc63. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZK6G2412781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a11eb9ecb78a2688766494caf969739ed2fda509183a8ea296fa4229bedbbd8. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZK6G2412782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9537f9e02c555c1ba208b922ce48a054e4d105cad4f9546aed99bd6391cf4dfe. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWU2416255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1340dfe48418d063b778537714de49ef78e5b880a448f4fd75fe845b0da32d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZNWU2416256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df1225609f22b5f48eb5dc916688e578ccaa888d10abbd06826742d1ab92c32. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNWU2416257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeb702b76f48cfc09b4cbc2ea8165b7c47ccc753921adc5b9221fd359121111. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZNWU2416258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94907d2a2cf2be6d351c1bfd670c0474d678f1c05308c64cabd12a2eee6e04d5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWU2416259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a60344f99c1c58bf610989b90946fe61dad9933898512f442c0205fe0bff5fb. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNWU2416260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c94bd24cdf96543ef04c45507eb693a04e1c7bfcd30da57fcdab11c76bfde5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZNWU2416261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd942ada4b685db312139398c8767279762d58c1ce5049f61358ebd14405981d7. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZNWU2416263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e53616713334b352ac62cdd710f02ea9cbc7e19e9589388f53d52c7a9e0a7cd. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZNWU2416265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5917989230b7542846a5d68b456d9b6d8ae743eab517b85975b87af03567e27d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWU2416267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea57afddcf7f6fd219308c5125e3dfbccf809ab7831c61af3bb519a728125cc4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPLS2436616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33067a4c0adc30f44f00edf10107315561335fa105cafa37ee1b8482caca2a14. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZPLS2436621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99de7da591df256b43ce11e235504f963e90c6107049780533c200ea58074b9. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZDA72564012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee436e65bac87a5ee658abb4e446c8dd984e88e6df599a1321a4a92280dbeff8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA72564013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef1ebebcb6eb505b2ea84071fb622161d034b01037b902c6662c3563455ff48. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZDA72564014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb344122a5aa0a51cf0e7ddd2a721e052ecbe326ce426e87cd96d5da0fce3ce6d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZDA72564015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dfbe1a398ce8dab12ee4b487e18ddd83cd7facb72de2cc8d820f2353fed2f7. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZDA72564016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa13ce3455b8648436323fca6e709fa0342cdbcbfa7eb3a82fd6eaccbe9bde84. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZDA72564017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f13c16b3cad48dc28552acb5661a3cd44b561ab9448d0846e38deebf43456c. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZDA72564018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16da6e129ca8339791ac10d8dab6e161a619b87cbcff94c4429b1a758bc5de87. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA72564019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17ff53633c585ec781d54ef88701f0b56cade0a66fae21d149ebaed2870c211. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZDA72564020.