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 0x1b0906b0bb6b6b156e79cae9284b89ef64253fd006fab8af407553510b36a0b1. 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/8dc79b50-a093-4a28-9fc6-daad37a63e74.json and https://artists.proofprofile.net/proofs/artist/8dc79b50-a093-4a28-9fc6-daad37a63e74.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 0x4f82a32dd597d8fa81a8b714c62591657ed673e18a591c0f46ed4b0ff41a836e. 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/TCAFH2008885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9766aee25221ad8bb1e47f664c6a6eef6f7b5394628139db9fff0b30b2888d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAFH2008969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7360389838076c4236c0de2800834f65b5b1dc28d4c4c0a68cea8db00e09867. 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/TCAFH2008989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb1f158223e114fe975a467d5a1e3695518a76547131f03b68cecaf35a57153. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/TCAFH2009020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa7f527b22a380e4f246fa5f8f97670d4a782710573c1f4ffa72d3adfa9181e. 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/TCAFH2009029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c47b6f73cd5105aad652644ab24d29f78b105cffec035caf2a912b0f4192d42. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/TCAFH2009011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941b877d7694320866602148ed8c7dfe4b54448310cbfa666b935fcebe6d9379. 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/TCAFH2009012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c47b6f73cd5105aad652644ab24d29f78b105cffec035caf2a912b0f4192d42. 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/TCAFH2009011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd237715a89e1acb78998adb05d1a2e5c156f335045dabc7384fffb4512ae1f68. 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/QZK6K2232767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcc8aec89b719b1c37eb481764b0f2d7e8928d5d70721db090d1f9aed30aaa5. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAGC2232432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bec40e8ffe6ea68f0f9df33e688c3b3674fb06719d01a8f530dba87b4d7953. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:13:13Z), 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/TCAGD2276124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109275b525150c9695eaeecaf81591f801e820ff2d08d56e4ffe4ddcc9dc5791. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZK6K2229886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1513cc981717a65bef9b3f2cd5f04ad253729ecbe9a40193c055af2d4b4ac8d. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZK6K2258424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344a26ce9fbc96c095e794e74e3f26115e58097af3da1e59b19a447626ccf304. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6J2256562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344a26ce9fbc96c095e794e74e3f26115e58097af3da1e59b19a447626ccf304. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6J2256562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf113c7a6ec4f0e63f72ae79e7b2c32351c7c018f1aceb18045fe13ec8c54d54d. 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/QZK6G2237687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e477f6438401a7a5cfdce9271fa6374115a00b954b0afb61a8f525c807412c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTAY2231832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa452938617f94bdac4e14f8409683c75c5562f027a1356775523ccdd91020add. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCAGT2387940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c3ee53fb688b100d68b672f18b9c232812c7bc928c1209c096f4a5ba9b194a. 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/TCAGT2387953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa452938617f94bdac4e14f8409683c75c5562f027a1356775523ccdd91020add. 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/TCAGT2387940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17894340143e924bff8ca42fd66bbb248f62eee4bdd65fbedce843d6a4d598b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAGT2387950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c3ee53fb688b100d68b672f18b9c232812c7bc928c1209c096f4a5ba9b194a. 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/TCAGT2387953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d7c77d74e2f9d1327774886180e97670259b3ec1d91535505270903c376fa4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHI2305546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d7c77d74e2f9d1327774886180e97670259b3ec1d91535505270903c376fa4. 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/TCAHI2305546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1aa69284ce1c0bdc610ec3afc8290fabdee67a4b04c584da1e9dad64555998. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/TCAHM2300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c9f490d0ecdfc7476caa87f5d749a552ca0f78902b69913d867f3bc5e22e69. 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/TCAHW2451126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e7a6d4147ca63245cd4a9c9c762469d4b4aeee9d09bd81a2d6510978f85e0a. 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/TCAIA2408307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fde02e3035a3c6391bcb376f3bde9e0b453d7397c7088f061ccd10d6233c0fb. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZNWR2222483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb22acc0c967df90b7d753cdd67d3ba19890187ba9af3219e8ac3c042cbe8f9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAHC2361689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa840f9e99afb774bc4017fd1c81a3b2853cf017d7f1200f9dbdb313f02298331. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QM6MZ2563496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8966e1dab3595e095404d90dfc318d4b781fe00e6123a747b990975257b7c841. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:16Z), 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/QMBZ92557708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083de0236142d46d2b44841d49414d08444dbb64ff533bed2bae083c9e68b949. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMBZ92557709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e83f03874afb699b8a41785c51bf402a6f4a2b55ac52dc6a20d45abf48717c. 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/QMBZ92557710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1814b8ce05695017ab0de4176ed889cebd4668d5c79e43482c2cb24851f03b05. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QMBZ92557712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb92c183b3cee836263b4a4ee953c0b6f92c233b90d0e92f2028e6e7d9a6bfc5. 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/QMBZ92557713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db6c278b3e6807b2924e2ca7dd716756027d161f6cfa121a567495d825f6c18. 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/QMBZ92557715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57103e4a09b780953e2f80c1f0c08697ec1e88fbc70b0465ff5de7c52ca076cd. 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/QMBZ92557717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbc2ec0cb8a50414484c72ee8985cec73a1d9c32cb4074c6cf7ad89d7d9e1f7. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QMBZ92557718.