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 0x3ed590a195558046b49ffe763716f44f2414d78d5049dccf4dcaad460be72193. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83034d96-4360-4223-8972-a163de5c9b7b.json and https://artists.proofprofile.net/proofs/artist/83034d96-4360-4223-8972-a163de5c9b7b.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 0xdc6e3c2bdeb1519c815197060103f8683ad4752a99dbc2fca039c5be54eae938. 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/QZFYY2501056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd503770525603b57e2729e96624cfa6e5a6336ba24c52b2c615c07a8e1338388. 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/QZFYY2501057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e1ed13149f5bd8d9e469b0704d8b0c2cb45b2ee306f5e18ac51d88c573b06b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZFYY2501058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7275ff28f97b4f925dd8961bf3d0faf97a72dfd77a09b34069092b2afa19b2e3. 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/QZFYY2501059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b191e42c79f03e6742a44113e8ef0eb7efe16615cc00478407c39977a4f62a. 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/QZFYY2501060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ba826efa1048600b3d5349661a5c876ae7780c61889e41dd448ca5c8d57764. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZZ8A2518462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8011559b0e9b2fa631edcf04827f1199ddd1b9ec4b8bbf19d9cbf527cfd41de. 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/QZZ8A2518465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64018be062ca5b3d4ad452265fa885f3d63f29a6b60a6b4c89c990ff2fdb6dd0. 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/QZZ8A2518448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640479aef106e6c8e80520ddcc4ac47e4ccf6744b19772ee586f28efdff1bb9a. 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/QZZ8A2518449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370311e379ca2740a5f8fd02ae367399a81a3f39364cb3a9b3c2917c4d29b363. 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/QZFZ72520032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b61656123f1cbd403972c633546fe858da361b4ab219af6372a934f4027c48. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZES62578168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd9559b3c183b88720a3befafc77ebca4cc5b605c5e72c2335aa5008ac92c2a. 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/QZES62578169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269ce44225d7165713e43fedcfff15d9f4aacf3bea4b707d47c40339a345fed3. 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/QZES62578170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1f1b447b976ae4965d64290d011f7837ff238aeaaaf99109bded0e444cd43e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZZ8A2522012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413c61262604bc762aad0a1a62a68ecb8e7c626eee499e5c88196255f3b18abc. 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/QZZ8A2522018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be337ff81b85934e0246d10c88fdd35af504399296275c212511fa0eb15e820. 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/QZZ8A2522020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4475f3397e816ec5eb3b9cd799d84a99c651d1676cb2cdb3d64edf499d054fd9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:30:09Z), 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/QZZ8A2521981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474e965a45327a46fc5e5e1c014927e3d19c843549fdfc4d787fd2a71e51e247. 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/QZZ8A2521986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e53851bd914b325569cacb17e763d22d66470778bce21fbc7f305c4a931cf71. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZZ8A2521988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bb9eb15da2817ce50e08671f5e6ef3f6f5101841f583f89c0f34196e0adef9. 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/QZZ8A2522040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867d36305d59cce489d1783a8036b5369b09625d35aa97043f396d026630eb13. 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/QZZ8A2522042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a101c87da971e28d0d7d648cd801e3b821a844a10c3d072de37f626bbe5fe5. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:36:19Z), 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/QZZ8A2522803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b03bca1f9541be521860252dcb868373d46bc04c9a1d487d53489b08a1567c. 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/QZZ8A2522811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eb2422bdf796c3319576661f2b67c04de91fe7378937c36df4e6abe361b7ae. 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/QZZ8A2522067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca8d31dd7a4b44f047a9f89778a5b2eef74b3965a91fbb582a8006908d17aa4. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZZ8A2522072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2972c9f596a372cd4d05a78b1c4af3ecf75f61e727dce5fc80f9627f9728e0a9. 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/QZZ8A2522074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac84bff7421fc7b84edb2ae082dcee5486c698486151a3a69428f24dbbb51ad. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ8A2522904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6389633c99fd58c9c992fb2c058ec33d5e9f6235426c548a9d56ea1dc7f316. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZZ8A2522909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cdc570a8c097f546427db7b9988b644439bc1028f86cf721f0aa34dc93f91b. 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/QZZ8A2522914.