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 0x8437bc1d355f915d29085c0abd59f5b70d89edcc8a301a53bed748f80433414d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43fd323f-80b3-4427-8a75-4780e122ab12.json and https://artists.proofprofile.net/proofs/artist/43fd323f-80b3-4427-8a75-4780e122ab12.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 0x7d5b69063a71d75ee346dcdbf9885e64b89a2c91b9840e5dfa6bb4297403bc73. 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/QZMER2011039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c9707bc2bfc054958e3312aad61445b3c9b12ae25107d6634c92492cdf9540. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMER2026535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6225162377f1199830add4ea9527b7ec88b5df8d5e5984c3e0091cd41df97937. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZMER2025777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdef6495b119771aee27700310cf44a404f3d927766482e9eb296559aeabad11. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZMER2030634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209bc40cb9ff9b0b5752006f8e57fea3e89457c5ec96c1ace66bf5b1d1dce7da. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZMER2029017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c84bb4975bda8bc95d7a114af3399daeb73ea8caf26cf00679a08d092d0f2f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZMER2029018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af17cdf015522fde60fd3c3cc43b292549a77d043c6ac2ce948b74c42cc24ba. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZMER2047544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afc0bd87f4777608f60a87b47ffa8ba1016a6bb1be9ff03534edc0c995f61f4. 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/QZNWQ2028393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac55011bfa6beba31c950886bebc977456120adc5bf0e52f5e1dc9be98422074. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:01:03Z), 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/QZNWQ2028394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00041bd97454073714a462bc6bda908ab00a4a795fa176e18fc0dd17f3370dfe. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:17Z), 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/QZNWQ2028395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486a294770a5d89add271985e23916467b10bce0187eb9aa2c2aab7ddc624704. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWQ2028397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5189be259879bdeeeaac6de849cc66bf199303f80c40c0c668ed16b4a3dcd43. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZMEQ2074775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985e1f2a1b2136d9b7733ff65cbb80776bb192176e762a8eac9bcd09492aa144. 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/QZNWQ2028398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29640a9191f985e3c0a6230adbb6ea6e6dc369abd8f4cd5a088a9ed7b2a98d1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:51:41Z), 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/QZNWX2073336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5f5fed563e902df9299f5851b002e6dcdf896a4e6a1bf52b854418ce03e9e0. 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/QZES92299336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028228d58b779f1add0b51f688a4caa98aed4bc0c1dbe2171217c944374e15b7. 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/QZHN72214213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76098fadf09cb9192c906f4e9d9c593533de7859c5c446c2c7c12d9a08bf228f. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/QZK6P2235169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704b870ecc95e01b689a47194542da48711de34e0fd37ec4bb26a3a78c56a1a5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZPLS2264058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb318364468de88e617262029adefd583d12e10ea5fe41943d99f0d17a06d57. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTAU2280882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c074203b5d2cb81a6993715f010a9715baed7fc7d9d194d7492b4767539f7b. 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/QZTAU2280883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5f5fed563e902df9299f5851b002e6dcdf896a4e6a1bf52b854418ce03e9e0. 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/QZES92299336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ca18141d73027f43af451ef889821f9f89561e261554bc51a3715e96115c41. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZTAU2280884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0389301f074cbce6a1b64a74dc0ce64c7f38983a65533725a7557b837afb3079. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZTAU2280886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7203ba091e916a17ff6ac59e717f54119d0ad116e6ed066cf99c3a4765877661. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:06:11Z), 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/QZTAU2280888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce01d333de5c099afccba6bd10f350329e1348e895a5578518d6813fc58ed65. 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/QZTAU2280889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160b5a132fe2d62dd90d4a27fe9a8d79b331cdb7d084548425c6749e6ce94616. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAU2280890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9741c8976e9b3a99245e65e68f6d56fd1ee5d8acb0d40c36a72bf4ae9ddb685. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZTAU2280891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312794072a537b202ec374b605073785908623a5f390787a658757998cef7611. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:29Z), 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/QZTAU2322065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6984e12126dceae394306b26dd3547b8082440f7169bae91d1d5b53017feab3c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTAX2391259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81435a334f5811c20b95eb5d02b8c8ac4f87746be934e60a5df5e173914d50b3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:58:33Z), 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/QZTB32349281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da71d467bc58eb1a40461744e90b8329d641df198d0a04373c6444fed968fe7. 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/QZTB72351519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf60b4efccdbc23ae395d24b1f05f6228c78ed17e91f800516c35a61b6a82f0. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZTB72351482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfef39f35661d431aed74a8d2fc8a4a47f6d8394b8720ca0f63e19635bc3c674. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB72348504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3423ce147329e8266349c006e6952b160ac1cf855224031764a9da9c8853f6. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZFZ22432807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb753002d0f115b38e5c7ef7bd288c411ec1ceb5cdb93ed8b30cc522ac18334a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ22432808.
The Moon Shines Brightest On The Darkest Nights
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0138e6f47707275658a4f14428d20381e8530940538166871cfaf6b47c61850. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ22432812.
A Sad Trip Down Memory Lane (Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717b677a4cc34bf593e148dc7b0ed2fc95c145af88a0e2a80ea7d20785607e66. 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/QZFZ22432813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad8b3564143dc6705d7b1b991e9e861a520b1b3f293e37bc0f648a209f6b1af. 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/QZES92419995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2020a67d4d804bae78cc62bc8453656b044c56991f63f3f66aadf2e940137cba. 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/QZK6F2255188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13a5fd521fa45758d8c9257c978eb46e60ee5e951c49a826c87ddfdef723ec5. 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/QZK6K2204382.