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 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 0x0eefa2c4c4b133084a85bdf21ef81eba344a80971aaf9a9793cc22a66ffdadb2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/712e2917-20bb-44d5-8c0c-8abf06702e6e.json and https://artists.proofprofile.net/proofs/artist/712e2917-20bb-44d5-8c0c-8abf06702e6e.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 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 0x2a782d5e316379cacbbdac88b29103e88944cebd345062afe60ec748e2e38b6b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/BE31O1205470.
Harderz 2013 (Super Hard Bass Mixed By Ronald-V)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301d79d4959a16e0fd4bf71c77f69449fa56c3a7efe597404aed9dc89f6bef25. 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/BEB681200375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d2166130112aabee6a4c35cc07f1fbc4de04f17970ef9ce4673707b694b0d6. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/BE31O1306020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efe24298e9b6b822b6ff2e8649eafa931f72c07c10ddd805ef517dd95d299ab. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/FR2GV0700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551f7e6365412dc54a39d78477c64dabe4165bd7e90de448a7e50326dd54f6d7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FR2GV0800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f45b3f97b076e91510856f3769b76bdc847d6bbafb987a05e5429ab912b3405. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FR2GV0700071.
Cap'tain Harderz 2015 (Cap'tain Belgium)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f8d1f36072ea13ccb85f2ce7227f8573a4470136084fe27485c3bcab3abb70. 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/TCACC1426977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f859273c1770b36b39cd40f960ecb4e0dad20a71d88b48978efe5666d96d13f. 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/BE31O1506760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb57a4581c8e7e97881c7c45844df45b16ec828a01342879146d398ddd96d86d. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/NLE801400319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7336f83d28cc7125e54cb225b89dec6773bac5e18396370b2dc10f964ae86c7c. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/BE31O1506780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a7033cb8c448217860b5601b41d687a3b5f89474e998b761f5e8d489d77b23. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLBP50700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf398e7152d546f0f5b5c69396f12c4b204a801095d19844e9991e232c0ed80ef. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/BES041400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf672525875f1e2cf7693c3f537243fac41ab49445fb8f6a0466076d2b46131e6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLE801400625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e1c4776cb4302bfa114a5436e8bc0ba02a3d6139d22507f3f944b38cb009ee. 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/BE31O1607110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d87bfc5e9ae80741264bed732775f1a6e7ab1a8482528a775702e37eeb16984. 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/BE31O1607130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e5c2e980c8e0232f66101a23e93babfb22b4adb85280a3e3e23cd575b78719. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BE31O1607150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf664bbaa11914729dbf251721814df84d36c86a26b81d9376946fa078e024e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEIW12400673.
Melody Of The World [Live At Tomorrowland]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf664bbaa11914729dbf251721814df84d36c86a26b81d9376946fa078e024e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BEIW12400673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908e5605a89724d7eda2dc0c838cb293ba68b46b3088276749f0b2d717ae6ec4. 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/BEO311003960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ead2205fcfc1abe56a2b6442908d0f171abe29988ac2201092a3bbfdf73c812. 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/BE31O1105040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40090018787eb4857511a11997358236b03427a2c336d6a46720d959b7b8351. 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/BEW131003030.