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 0x6ac124d31aba34792483607c5f7698ebad4e3851c35cce1f8a85547f3677d2f2. 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/ab3b5a37-dff9-4335-9554-1ed161bfbae3.json and https://artists.proofprofile.net/proofs/artist/ab3b5a37-dff9-4335-9554-1ed161bfbae3.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 0x87695a73de8e6001909c526151b31e355b2a0f3532d36f005d513f73c06f5f94. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/AUBEC2184091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6768ae4803f5934f3eba9763cf23a1f073af28d94fcc6a7a664722b8392a35. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUBEC2184092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251c32d81e7c792120dcccb68fa9d27a99e6d50f8de3b7eceec31528a29f3f0a. 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/AUBEC2184093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3197487fb8c11c1c4e6bfd750424f1ee9126013df1a8866c91f8057da37735. 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/AUBEC2184095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6feed3a0f011a3db13617614a3b2461d9eb005d5197433f04b11cebac1f60c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:46:54Z), 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/AUBEC2184096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01b60d4d0d4bd1aca5896142d5b55ad948797bd24c4f8c249aece7d441bdb32. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:35:03Z), 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/AUBEC2184097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6318dd08d7ae261a37359406a9980ff85d8a4ce54fb2487ae47b0c77e57c6769. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:15:39Z), 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/AUBEC2184098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5118d7b60016d5df638ece2c364556a1d7f7f488bfbbc60c7498a6c32327d8. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/AUBEC2184103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af20964e05230e29ce81569522ed913948f15b7e07a689f39f81bd2f6ec3bf1. 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/AUBEC2184104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7120062419087397da87089a7aaead25c53e7ce946503538407c1570911d8030. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUBEC2184105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b280e3ee88865b84091dd272f487919c96a4eeb8ece7b28b7b50a90ab37d3e1. 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/AUBEC2184106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31416cdbcc99adcd1f7b4b45d0bb5aa69cf3417ac57729ac5b8082d039695ba4. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/AUBEC2184108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b950af1ea8585c5e79aed4539f14ce742b606be990229f4e40745cc79ba1c3. 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/AUBEC2184109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5029d26ea066dd9c5a3a6ec920a805ee5c570114d09dd31a71b1184f19cedc. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:20:59Z), 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/AUBEC2184110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ef4d6d319e08117b5c38d97a0eb2e5c674718a1c7a0883b2d830766a5dbdb0. 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/AUBEC2184111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4627dbbe564063838c018542e690395bd382a921e1da9033764a548c64cb25. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:10:19Z), 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/AUBEC2184112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335ed7c63fbf8546784887dbe9a971b0e1ad0570676ced40a491b01562c55d29. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:33:45Z), 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/AUBEC2184118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8ea8af5dc0ffc068ed853a372d1f0f2820a17d4f944a0f3c0a9531bf7435b1. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/AUBEC2184122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e80a647cf43f4be13aaef352abd0311c6c71a0898b0b23afd9d700cc8b3829. 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/AUBEC2184163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c2352637aacd823519306eb4b0e2700bdafec2131dee8fa8c7902b1321e0d6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/AUBEC2183861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d68ed145552d4bac36250e7a990f4a48d26d1b9999d9a888c955b0b927fe46. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/AUBEC2303240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfe37f169c6602e555e5cdf3fe9a63961bed613750d87ccef6fef13588768f2. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/AUBEC2321344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b34af64ae42dd531962c81047a6acd263fd1afe78a8095330f9fcedeaaeb55. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/AUBEC2321345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a90f84b74ff503f9dd2a92e17cf812e48d601820d4138c2d5d9b7241b835952. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/AUBEC2321339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e451b833689bde15ddc7e15533dd16cf89fafcc06559367eebefc6862abcc0. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:07:11Z), 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/AUBEC2321340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac9b48af0bd74c4094cdcc9e8fafebd0221ad4deb6bb5c01c1ecd9c0016d6a2. 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/AUBEC2321341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe530ee55b078a2fea7a3c4dbef305f87278a3f9a3bbdeabfb5b98b4ff3789ce6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/AUBEC2359356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57b445e5348ac92522734f466bef02e18456353486aaad71a2daf4c0f98634d. 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/AUBEC2359358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3323a0454d1c19c5588c72b99d7e38c09a5a11fa471fa8ce30444693a21137b9. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/AUBEC2359359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3830ee645fa639ced9f20e4e95055ec081df60b732efa6c878a5754750fba6b6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUBEC2463013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68be5a64aa399c41f44f18511c76ffe1e2232ce328d3464064205a8c03f6cf3. 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/AUBEC2463012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcefd238a22cef27f625f0b4d1edb2b6bca02273e1602964172517e1476ada90. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:52:51Z), 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/AUBEC2592997.