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 0x0e949ab0a0e06fd31e92a3b432b525d7649c86e2f0385ff3f7ee5e817e82907d. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02c6fc5c-a270-43ee-aba2-4da022471bfa.json and https://artists.proofprofile.net/proofs/artist/02c6fc5c-a270-43ee-aba2-4da022471bfa.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 0xefde015c7a8ffce32f6eda5cac76e82712d0bcef7addfa9e14b2f52fd1f9a1a0. 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/ESA011785060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04582a0925828f039324b3e1bd5eda90b04c9aea8bd82c90fb3eba7a1d5bf25b. 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/QZGLS2000719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb85b9c8a9e575395b5767c5a31dc0aa54ea3eb2d7ff19ff5d9d5676f2bfa7a. 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/QZHZ51954746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd425cadc0da63990e48b8098e3ea7b34b88d6f3054097ac34e126a2fa32822. 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/QZNJV2010315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2891fa7aef9467556c1a1f837f98b05962ab44bd1141d690065bad74b3c0c8a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZGLS2095428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666ed9f4965fa4691a8fdacf46e66551d60176826496ad142d91585b9d95d892. 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/BRJLS0900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6787fc10d983a89dc0a8bb0637f1acd396bc782771166055064f38afdaed78f. 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/US7VG1664571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90457891b1599bb93c122fd7e7ee62e46f32cf7e86f769b8d9de55250b7fe88. 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/BRJLS0900213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8a426b04ca7a5265177443579a57ffa791ce219be7cfedf11851ec9de946a1. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/BRJLS0900385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93eb9ceaaceb23842edb81a59028aee08f0ba6b074fdd85b93f003ce4cc428a6. 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/US7VG1664572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7586785ce1bb62a0aba4d4d1bbe25e8e9626194e9ea64e1f0aee8e2f4c2b05b. 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/US7VG1664573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36568f95cef73af34a802ccf3b42755b771784b37b335b35e58fb0e6fcb839f. 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/BRJLS0900216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eac5f5f6bedb41ce6d9347ae90551302b714af2102ea23103998c13869fd580. 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/BRJLS0900217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7514df72cf7686e03aeb2201029b0bec44a327378703a85e20f50d935ad5305. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BRJLS0900386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2c8960d0a7b20d1c0d420d070053bdc67d97620ddb7926d29e152692096eb6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRJLS0900218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1d587c2ff6755b08b1d84b5240ed327c2608fd83fab824d5dd1b0b9ffbbace. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/BRJLS0900219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7223608f9335fc79d0e3993af7bb8909076629534b7d80a7533bece0a9a812. 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/BRJLS0900220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401214182f08368c701dcfa78f8909ec725c4b5a279706d9cceb6e4a246895c3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRJLS0900221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd800bc1e286071998e9ff5bab56d4b6a8075ac5e9271e94e082b28efd354af35. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRJLS0900222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d42feecda0d6281ea00a368ac3b5f29732e11c5f3c98acca7703d3529ad775. 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/BRJLS0900225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559e636311c08e76727fd4cc189a905a6397d8727461b1a0d1425bbdb5507c23. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BRJLS0900223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499f55a17508a72902f19ccbe34dd6b41c0199a4f5a670c4ea4aed8f094eff5a. 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/BRJLS0900388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d56d3dafa8d203ec86ec5de674e08a3f36366d7a2d8c241a8e71dad9467187. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRJLS0900224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8b1ee8137587460bf6ebbbf8a19dd214729e3305fcf73e87b845cdf4ebcc92. 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/BRJLS0900389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f8b90e57dbe228a00d6315dda88ff255f7f2e7ce3052ab1da8214736fb7fca. 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/GBLFP2043967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d5924bbc8e86ac85ca52e6e1a0ed8aeee195f280309679bf31ed693dacaf66. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/BRJLS0900284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e9e3dbeb3dcca330468d68bf7df15725b25788f53f7a42264a433732036d01. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BRJLS0900285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e756e6f76179a53e90b5f74983b495cecbdb160dcad1088d95810a9c9b2e045. 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/BRJLS0900290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87de3fdf31f81b96041563542755438f7729b54463e9a4a9de269dd7d9fd5a77. 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/BRJLS0900305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7984a8770e8973187fa1b9df54d4cc5722e88f64f30500d89223a72a39bdc33c. 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/BR1OC1000341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350be01a6b4104006618537c65211c84560e2515a396f3be34d35255bf571662. 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/US7VG1671933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f336c536ca30e7204c28db39e6912f98795b2fd679dfcf20c257202c9f4e08. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRJLS1100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c82b25f40d0e3cc8911b44f73ca006d30818a744eb28d8563700aa43a04550. 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/BRJLS0900526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968d78ec542fdabad9e71201f87775ca8522718aa1ccb68bc4e207cfef8864bb. 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/TCABC1178181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e06298cad886ea0695535f33f8dbccc460c2722ada896a1a5ad49a68d851d25. 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/TCABC1178185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e50bf56ef74d9eafac1b9fbbcba0d9e04fd31901e9e511dc4e471014394f295. 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/TCABC1178191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ed4477d7c7dd08f45efe3bfd3ae814947fbb99724363712da2a1558a59f057. 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/USWGR1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769e05e4804476a009c7fde00279e41b909d44460afcdd61cbe1ec9fdf77622a. 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/USWGR1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0418630684623e7028d00be5325b5ef1e3a9e274524345bd818f7d81e733ac. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USWGR1000008.
Pantanal: Nascentes, Rios e Vertentes 50 Anos - CD 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6505ddf6c0e990c666b33b20100569a67d64bfdbb40d2cd5a90bfa708dc15d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BRM7K1600279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd99065ebf1c45396f15ec0244530802adf9cb0385c7ff7b2467a192fee301c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BRJLS0900617.