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 0xaedea97a2753d4772e18c266af0f63329cae5596a5bc3dcbbe7412e9d23227bf. 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/6d70da77-e14d-4af8-b38c-90ff739bc908.json and https://artists.proofprofile.net/proofs/artist/6d70da77-e14d-4af8-b38c-90ff739bc908.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 0x1f322cba5c658ee7f82c72b32fb1ac4477d84555496e41bfa280e16aca160c73. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NZUC01209604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d941031d041899ee0851e57debe543de58631eac7c1f500f27cfde02cb1f452. 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/NZUC01209610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0f535781d20878721d6cd063ea78ef02b4b352d65312bc9b8fd543497e63bd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NZUC00706205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3052b4794e0737291703ad4034866451d71dc4323649f0519f4f38d48041ff43. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NZUC00706208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196b718b25cf1f0fc32cf70e4f6a91d0874d5374b082fb6b4412d091e2736892. 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/NZUC00503711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4b233a192f5730f70e3205a22f2a02d3c1b35674499184a8cb90160da186ad. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/NZUC00908307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0219c244843a91cd2f6000d904e6ca03d9f706cff20aaeb43e4176545ff5b846. 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/NZUC00503909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e98fea8e973ba72f85873068118705b1fa5532d339dbe48276a066afc5eaf73. 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/NZUC01209611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25893810dc5c84c4bd5ea5be139b3560ab9c749368e6c279a49b291751880516. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NZUC00503415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd622bd379e06719e8616de30a4f8fdbbb26c6e034409cfb6125696896ab2f3b7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NZUC01100916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa437f2c6519b79e188c4c65452b824c15951621c213bbfc0fd2280a2896c5ded. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NZUC00706713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2746a91a338495457a0179a08d8d145e1a3d06195363923b6d0484ed658f8e43. 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/NZUC01310101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf880ee84ae7c65d8cb3321255202ac29e290750014709f49399ca143a60be6b9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:19Z), 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/NZUC00503952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa237f157844bca8ac19908dd0f3d5cf14063a38c1ffe89c1c43c8fad301c222d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NZUC01209601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9297a8d4db21f6de91327a539885fec261a45002d8af4044f5c6dfecf61c9c3a. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/NZUC01299001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b79234251f8d4ed84c018e480fb720da911d945a598d7fbfa6418308b47fac. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/NZUC00503609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0f535781d20878721d6cd063ea78ef02b4b352d65312bc9b8fd543497e63bd. 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/NZUC00706205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d93fcc345d9710ee63377267d685a50da5cb151352b5f53f7c227b55814ecbd. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/NZUC00807108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f216ced16337053f00dff194742a6bea3e9c100c39039e2b3b8b30a325a3244. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/NZUC00807109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2740cd39fad7c6ca8d6a58f91c750d4fa2b4a943ecc069e26bdfa2afd092d47. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/NZUC00503911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fad2f499815de31da181e6eb266ed1443a1c7cb0421ac2c65630f669d12fc0. 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/NZUC01310503.
Totally Toddlers - 40 Preschool Favorites
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0616b411b135b73a3043e8816649b6c503d3bd50e27251ab5bb0c66469c46a65. 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/NZUC00807205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1096af60537df9fc9a7b43ab7784be27fe4c3c3abfd9599686a6495ed8bd374. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/NZUC00503914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2194a2719be7cd0b950f7c927f7493284dd8796b30f7f45a500fd9191c1f190c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NZUC01511204.
Kindy Kids – Kindergarten & Preschool Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90371be6d2cb332f6dd8a3ea43b8692d93500395902576df8dceeb5061fb0ce. 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/NZUC01812101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb2330dba20752979b90cc8f3962c729dbfab11e732f4467fb796f2d12244f8. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NZUC01511203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97855253f1a939816e22dac5d82345c58b433da953c422303f03f3972f890450. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:53:33Z), 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/NZUC01812104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaffc1181a0efc51ee2049ab5063e1195ece9307e107134c7fdd52d71fe9965. 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/NZUC00706801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c03960614bf4a8b59474b5d6dc2c1b931113a09d6a4fad2b636db4599f0920f. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/NZUC01812201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb1e874e446738fda8e9aca07d05bd17c8bb24d91934484a7772aedd880ee2a. 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/NZUC01511206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac381e0401c2face0b72c7e5cfc06aef6f6c13b464373137e482b65ef25cb90. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:10Z), 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/NZUC01511208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cf16c59089b0a1fe8d6ac7411194eed7eb8cbb50b7a5ef298a100ee08f1958. 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/NZUC01511301.
Daycare Kids - Early Childhood & Preschool Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d3557cf875b18eaf1e4d559c6985a258a56156d83d4aa1e57701012603f433. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:10:46Z), 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/NZUC01912601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff421455b9a15056da3504cf3b3854be841eb3f797887c59824448133fc34180. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NZUC01912604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d96d136a14603fbf52661a3e35d413ec39006eb3fcb1a0d6457c279ceb20827. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NZUC01912603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c071abce11db0029518b92f7224e34254c3607da303c546458eda3f764e9f7. 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/NZUC01912605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069ddf700efb5ee55dc6f4f8111908ee8e54976f019ce420401160a9416817b2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/NZUC01912606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b566aee73e6453cadd4dcc463c08701e507a44a74c8a7b4b4ddf0396807237e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/NZUC00503705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14decc9f19032f1e6174ed5a6d5644803a2dee63ec88741779f99e3e99088fc7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NZUC01912611.
Preschool Kids - Fun Songs for Early Childhood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cf81ddc1f935b33d587aeba0c353c32d0cba86b2de75869ab2dc54f096aa0c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:15:43Z), 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/NZUC01912804.
Loving Lullabies - Soothing Songs for Baby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaab9fcb9eff2636bfe315d060e1e2d8871d372a633119066eda9b0d46823ca. 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/NZUC02414305.