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 0x0904d33f4de0c5b8f56c86c837401e6daad40434fd629b3c20d9a056ea1ae83c. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1baee5dc-a424-4d8c-a272-b9fbc09621e1.json and https://artists.proofprofile.net/proofs/artist/1baee5dc-a424-4d8c-a272-b9fbc09621e1.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 0x23f08f777f4fe636a8f946fa10992702204089b1106f249fe840b20f97bba039. 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/QZNWU2012948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbbb4207b57fa447c3dc466ec8fae51b1dcf3b3581abd972aba53b9c98c7916. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWU2012951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bc04e087bb52e5c7702e3687a3eddf158f6017ac4715c9589888d92f50e6c4. 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/QZNWU2012953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d53b59aac93c9fc9f3a37191f437e5ee39e97d0ee3664217279764fdd6ea8b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:03:17Z), 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/QZNWU2012946.
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 0x790916d7e4e6137b5afd380e85ec960db98a14392c0b06abaecd2e16325cd599. 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/QZNWU2012947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7235f8db845edc714f22aa70b6077cde29ab4a3c076bd1f7ea7e50ee5e7a954d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZNWU2012949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc15929d230094215346d99e78a68e3778aa9ff2fe70b44e42cfbc7e1b12197. 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/QZNWU2012950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffda7520c51350654ee6d2f62d512b1a61a82be5ca2826df31ab133f321403c. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/QZNWU2012952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908caf22701833b254888b3a5a699818f47e54f3a7b3c92931992a34c25bbf37. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZNWU2012954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f76f61cd72532ca28c44ff0e2dd3994ddf5e0642a0bdfd4e406600361e76abf. 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/QZNWU2012955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf533af39b65da018a512aab0737b314b9df8d070682d1162c2c43fb852ee251b. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZNWT2095062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4aa80b839b2c5e8bf52df9c9638dae65992d9309dc032a69199ef8cfb744c8e. 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/QZNWT2095070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd045616bc6c84f5e918886fc130ca72693c1516239b7324cac5e41fa981299. 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/QZNWT2095071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bda3878581a79fa5089e51c7c482d73ef5223d45fa4ea44012ba5ab420f499. 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/QZNWT2095073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8ee76200ef087b3f9d2ac3a0afdb56e394d07a7df6858efeeb111dab16c117. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QZNWT2095069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49cec4bca19e659983fca7152f9cfc7e2c85b569431b7eaed8f6cfda4f1b0d1. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZNWT2095063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd854d82569e265279a0fd4652c85e781e4d352618245cde50cd8560a826085a8. 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/QZNWT2095064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead94e64159db478611921930b28e2a0992399d67bee5cc6d64a339b6dc9f796. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZNWT2095065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941f7064ad4b693b5c8574c0674cac5bbb113075b181229b317d8589706a7f26. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZNWT2095066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70c76e555dd286a145b3482f4e9aaa696570c8816aa2f5f82885ffaa97317ee. 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/QZNWT2095067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d6cf6bdc4d6bc28eeb22124293d40c1fd4e3f3dda7c98b8c715cf32d2db3df. 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/QZNWT2095068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e04746777a54c58451268f605fd61b00e8c1508b386bb9f8a8edab78fc191e9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZNWT2095072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d89c08789bdc76c5b5d1290ec96a409f1fe3fb4ceaa2a3c299a3c7111c66ad0. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZNWT2095074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e6fb79f350780f3e8b112ab6fa96b6c64e118b45b74d757a9ba6bdb470a5f5. 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/QZFZ22178725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3fa811f26ba0090f06a491092f911d2e8f4fa6890e2a29f64bf4cb45111247. 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/QZNWU2009510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7004c88ad47e711e4a28b13bb5655a2d48da6fde4804fa28490b8bd3791f3fe5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWU2009853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef7be175d72a62ef5c43e394f69c9d247e24127fe565fbc27b9b1f468cca243. 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/QZNWT2095084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211c492e9509b62c2373629695e8c857ab0499bb318de386b191736325a2ac18. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWT2095180.
Propiedad Privada (Harce,VickoTheSickness)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e0c9fd7738fb57803b5e0de61fb240da978be7b63e424043b4bbb00fd28cab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWT2096468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e526d2f016d9348c23b76ee42b81821364e12b5a3a6dd1b432e54db42859ad0. 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/QZNWT2095146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb885bf38b3b4498fde232c88d2faf7ed51b12ae64915df1ace856bdacc0c1b7b. 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/QZNWT2095150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75d5100b8b11f9f8fbcbd67a27bc6a057d7ffd001cbf719d73b2903c1ef01b4. 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/QZNWT2096417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534d29cb5c774cec236a7364346d07c8dd54e873d2987104746d71f3b8ee53c0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZNWT2096418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785b8f9d774b47d61288ba7ada60f3c872abbeb9a57e4982ae569ff00499fa8f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZNWT2096421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf2ddbab631c13ed7224142002dee95f7a0359543f4281d8ac0224f0085e3d4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWT2093312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667083bd03dbfb18a227164ffc4374f3905bcca98b8828ff3c86ed07d1ff2efb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWT2095147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f40d78535d9a6591d6ec02b4f52c6d63c32ac82ece715e80affbbc53eb89a62. 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/QZNWT2042377.