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 0xbaae90f772aae5af94011c2d9ec9f837ca5cd9c58dde67fff58d6fb61c6260b0. 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/3cb7dadd-97ce-4104-84b1-2174fd19cb4d.json and https://artists.proofprofile.net/proofs/artist/3cb7dadd-97ce-4104-84b1-2174fd19cb4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sakura Sunset 2033 / You haven't changed since / Rooftop view & lofi / Mellow waves on the shore (Medley)
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 0x92e5b66645f42b7535cce4dc4c38230e2a396bf792612fcfbadfa046d7e8a1dc. 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/US3DF2243906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa444de02c20513a8be2121e327b3ea57b19830a287ce1ef93473d297320fed20. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZS632346999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4559e2e495aac3bc099c9f482494095a89fbd532f161f6635f7b1d3bb4c4d3. 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/QZMHK2351215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca56a27f2655381e5325e63a708f20768629e651b03e392ce54cfccaa20eefb. 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/QZMHL2316060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c653cfe689ea0cc991c0e51cf6b118c9c109383b44136c8a401b06606ae783. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/UKZGC2308583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e219378f2abbbc52f8d298986d5aeea8c6570cbb6d2b42d66523b7b86e3c8c. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/US3DF2447498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6352366793238d8f13555a0b780562473365523ba4354b0db413379348e965fd. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USANG2432881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366771a7c93ac9a9834c5c1f82bfd923a67721d0f1ed97716a245c4b0d53deac. 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/QMANG2442250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32eb23862b2ef7024c6af1ae3c09dbea65f5c66c76dae5911e8c117d61e80c01. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMANG2432347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe753d271b3451c64c18f367587d3f5eb2d36cf315a0966916a329e98497d7be4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:56:06Z), 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/QM3DF2446619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3c040b2a11798a0891baf69637c2e3cafd2a51d2caaba180817ec8f53ec8df. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:53:38Z), 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/QM3DF2450675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f023051f173a532d13787c6eaff5f06fe66fd028af77bdde829ee1944389459. 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/US3DF2450680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d909cd719e1f16f3d352a4234ab5844558461fae4866504c5a4a9f13817ca9. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM3DF2425168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dfdd86fa7cfcc5f7a689bd8957fe71df8961733a692a09354b16e21b751d03. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:08:26Z), 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/USANG2467816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ac3ae46311c9ebbf809682a58c04b894786ff32cc8931a3b56d3cb2de95ed7. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:00:03Z), 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/QMANG2420178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab938c91c6ac9efad9f1e575bfe07f92a024c2ddda372d7ed24ae4b7675320a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:02Z), 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/UKZGC2401846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b24918bfd3c9490bcc9e53cd7685ba036a3562532ed6ba3c89e53326248b99. 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/UKZGC2404603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc50beb024c827d7d6bc3826c19a5123102a82983a454154db9eaab7eaef081f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMHM2440060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334f66a064e4e37da6488a327f10ce1f1306229ae438255ddb20c7900d08f354. 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/QM3DF2404988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e913c6530222e9500d78d4ca707ac941c72710a487677ccf65ee0fcf5c8646. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GX8KD2516849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c47e59ca437ca3004eac81f729377a6bf4da51b09779f1412096bf04dd55f83. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:52Z), 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/GX8KD2533921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc082db91b9afb03107dc71c78bd809f3905fc3d53d6b38627781a855718ef16c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GX8KD2530075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244782ef4040dcebd6ce408adb41f2f07956e4a326522cefda44d682620ca405. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:23Z), 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/GX8KD2584103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eca000dc879a2e855e74d93772956f83c60d4870ad84ee2fa52bdb8f5a81ee7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:04Z), 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/GX8KD2512693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725c32e45bf5f60c641d488f56004a525839571dfdef251914566ac2521b1658. 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/GXBDS2532986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9d4968753689058fe9675ebcfc8e455f18fb48c8184de223862d056837e998. 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/GXBDS2548968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22241d198aa5db2cac0c8b97be7524afa5285b88f23e7f799c10f10c343631ad. 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/GXBDS2560010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7d3b57c46d265175f304bb7a811fa0ee512f4cde3809b435119d1fdcac4149. 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/UKZGC2402889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc77a32d9681fbce12195d0d63f0e3287d4a3fa5d839eb3e29928c4f6c6fb77. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/UKZGC2504199.