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 0x32a250491737fafb589fefb28b4a07e09901883a7688f5e49f8b69957871a1b2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ad745de-e818-468d-bf31-09fddeec0256.json and https://artists.proofprofile.net/proofs/artist/8ad745de-e818-468d-bf31-09fddeec0256.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 0x717d8fb31a5498854f36d54d936847998da6228ae244a81be275e6810266f183. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:52:26Z), 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/HUA181421716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c26eba603db233a74599b0551f054df0728c4623e9a57e34fe00cfef6eb91a8. 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/HUA181625403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e94985ef013109f082667c31ff98f2b5ad1d2340a46297ac6c72b50b1ac246. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:03:22Z), 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/HUA181625404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b16219eed15348acb8d4e983830183d87979c9b4bdd5c7803f28e23eb0be24. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/HUA181625406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaa11d4100ac45fae72c82c6dfa15957129cd8e741d89dd655e136799255f93. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:16:38Z), 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/HUA181625408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283e1e59d1aba819f631dd1b871c96d934bb4a5c0a6e1227e23939816f11d265. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/HUA181625410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9accb4254e28b48bbe01e8af7b072c112ff84a6de35d4b74a9a8bbb8f94cf283. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:25:30Z), 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/HUA181625415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdff704b91e8b82628245c71b009dff2bff7ac792e5bdfb5f2b6f94f8b0cc59. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/HUC831400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43c30729f628d47d9cbb4a69aedd64dcea7591f14ba1ea9026aed37137e63eb. 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/FRX201849879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540b7664db99be6c1f50cdb3647d4719181a81a906254a3635edb4268fc7f9a4. 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/HUB3H1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513e89bcd289678ff4a4d604440836553a284754f67d29eb380ce642b41ab252. 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/HUB3H1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0e276d54a82e49009915994f3031bad3e6c50254d32212d87cb44823af16b4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:04Z), 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/HUB3H1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8659460211b6c599c32845486a439bb4af1e750f15f5ee43c79452901e7de6c3. 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/HUB3H1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9989d1ecbddff9b112bee494a6bd8774ee828584fbf71d7028dd104ff8462811. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/HUB3H1900008.
Elfogadás Dala (Kék Szív) [Együtt az Autizmusért Alapítványnak készült hangfelvétel]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429bdaec54995d75a390b5b9349cd7f2f1982b76a088acf54d2a647f7286a343. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/HUB3H1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18460340897284122bf0f778d827893193e46225292f373c837ecec74245588d. 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/HUB3H1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790cd7f3f28ffc94de55bf39c618bdccb12a8a8fe735bbc41d2fbee24cf63d7b. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:59:30Z), 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/HUB3H1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf5c565b28fa9c722692c11895ea7a89aba9b297cfd6f055eb11ea16fc4caa4. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/HUB3H1900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21a9ff2398c4217648d06374ae0128d2bcb5dfcf3d57ba78b91cd80dea97689. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/HUB3H1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d41edbd82faffad783198725cf25bbc9648fdc3e26d2ee7b427f3b9cae9e62. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/HUB3H1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa01ef8e872ef5e58f61ce2abd7191ce00bac66f86aa9668a590b7883a92fed7. 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/HUA182347801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86ca3394ee5fcf7894ba6bb4accc2d3d6fb91ac6c1af5595dbb8dcfd0fd4b39. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/HUA182431001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a88501923e9587f223ff58dbd61eac2497765bac53ad2594e0ec534abc9e6f0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HUA182449703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a29ad3670c9c15e2a3f304cd6db0256b5808991b017996ac165aab933fe5298. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HUA182449704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc423427b464c62f0e056dc8eb6ed6cd77149b5441ca0292affcd1dc9d4fc7ed7. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/HUA182449707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c08691320abe4131e1e442096e8c3366010fbf0b0a30f8e53d21b02a136a3b3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HUA182449710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764a352bfed5d7688a55c97282b7492e03d6f84f7c794bcaafa28d06f7744b73. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HUA182449712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0214663cc365959813346cedafb25a3808e780675bddccf5374333dcc3e08a50. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HUA182449717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f886754d2491164080276bfe5e3079ae2ff762a77e0ec054b5bdd84548eef48. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HUA182449718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb0e396c7a85f13c2b99f1b798f23fb23fd59d2f80aa2413186a14260871859. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:38:36Z), 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/HUA182449701.
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 0x6dd3c549c9edbf528b7f4d391f3c810159e83d543aa86931c11d1a1c76d01844. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/HUA182449705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fa1d9d88ffe033302bf31b922d9b58a2b9cf0aa972c428b15760194e021201. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/HUA182449702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fa326b73309c7a800af41900e83d7d5709778b21ab297fc6f4d56e1cf3d08f. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/HUA182449706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1b3cbf5a6f22870ccbc2b939ca520b09df86c9fe713367d2d3e13bc547fc16. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/HUA182449708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8cce574303a78825f83b7d44efdb1ce80d4ab17da61e294e3c34517293fc7b. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/HUA182449709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9ea59dc693b1d170f91f8570dbf1f649d4b72a7f4022d9609b561ca2e2bb25. 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/HUA182449711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0638deab9a47c6cd4e9325f0123789e0f7d037b7bfd33f3c41e38a3096058dd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HUA182449713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e30c9a5eaf3bf1d1c54459e08eaafdba192bc6ac2627dcef056f53a5b091140. 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/HUA182449714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c078dc06dc3ef9d3a571bd632a9551058c6a4036960ef64da1c89b95e71c777. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/HUA182449715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdafbf04cd181ead9ac8a1f0df5542e3f6bc9fb5fdb2aaaf0a4d9ca396757b8. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/HUA182449716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a5e0feb58e99e716c508cf5e6b74b82f8499e340c229e8332b039e145efdfa. 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/DGA0R2463679.