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 0xa989a22ccf0a926c95c170c6fd3911f31a3bdbd0f91462c674443da444d323b9. 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/a42b8eac-a036-45b9-b43a-828deda825a6.json and https://artists.proofprofile.net/proofs/artist/a42b8eac-a036-45b9-b43a-828deda825a6.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 0x07411b6fa452ef7afabbdd749ad3b51a592b2e219ea9de899b314af20ff116db. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:28Z), 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/CAGOO2025550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d2f4560ff8d42c77c0ff127de7159f03d01f8ef6e52be17098ff64ef5a20b6. 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/CAGOO2057251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1061c45e022b053b51e892f2e418876477f005f23daba381921a2e19081419cb. 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/CAGOO2057265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b756edc352d9952fb578ec83f98283f32f2ea60c381efc9612748e5c954fd7c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:07:48Z), 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/CAGOO2057268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4408cca615e374c036053b27be8989d15ba65c206d75f4494d5181d474c1c4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:36:47Z), 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/QZKDK2120538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7537f936a9916e1f20d734aeb197a26e5a8fce365f30ef3c22c5939ab77f533b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZS662177785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b4ee06e8e978f141b8d99b74cfbc5a2f229fd9fcbebe8f0d32a94da409da5e. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZS652169532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc73b67f8825fd4db2121420b74da10ca636e48238de90bf1246033b374695c6. 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/QM42K2210120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa493b9685e8f7a1d4a05a9027f0757297ee1158ff71f01bc30da94f1bbea77e2. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:51:26Z), 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/QM42K2304750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8f9d1985e2432def2b7088b5dd0cb9b62a3fbc8be3c0218552ca858f906f15. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZMHM2306026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d96083febbdb48f4acb77c570ee9759c553452dac0372e976e7b80e9607dfff. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZS632347943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd438968655b2fc1170f45f6b3b5d4107252712a7da144e96d267c2318c905105. 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/QZMHP2316927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d490fb6c14bfbef9598a28b7554ccbd08011c5bf813418b98c74ae8df9df9f. 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/QZYFZ2450467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b716374986aa5e8f8ea6704e7d3d672f3ff8723a5651c722cd31fa8581fd1ff. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZYFZ2450465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466fbdbc8897053875775565ddf9ebd6c726ae4ef6bd1ef9219427ef00e3b62a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZN882412270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92bc7b942230ca06ce2866b44cbc23ffe994261985f8d655ee824a600aa8ff8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZN882509182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56bd3c2fbe6319929185d7a833d6d70439c8e01754b150ddf5609d4fc78d3a5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZN882509183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5fa7474f170f160c1536606f71763db5022c87ae18d803ea0b4fea3cd6df77. 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/QZN882509185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e020ab5bd3f110428b45155c9bf5532430ab524a2cb93b279ebc8856532325. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZN882509187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e771284420d8a339129724d7cf813e5bcd55e66c9c7b82184f21189221cf5cc. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZN882509189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be087856255a47fd72d6ee9f7b425e284c32ee6735a76f062ddb16869a41401. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZN882509191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615dbdf4673dcdc81c581c4a471e279a3ec0b8940d2d30cf45e02b87229a530e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZN882509193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0238abafc04e2fbdaf36a519c2aee74f47280191a5300fdad8c99e6d55153078. 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/QZWDW2510765.