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 0xfb42dfd657dee01be77ff36b145166e7eac3454ae96a33173005b7a80ddab7c7. 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/8d765fe7-78fd-45d4-8d84-7a18da358a9a.json and https://artists.proofprofile.net/proofs/artist/8d765fe7-78fd-45d4-8d84-7a18da358a9a.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 0xd2041b442d904c271537eaa41eb26b06615fcfe2aca90e864403758b2814b4bb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/IL1041701110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d890cfa6a0f28f7b3e25a4663786c604fd517cffccbe047fde269448c2fd99e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/IL1041701112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5fbed09332f6e25e231faac5cb44b7f945b0ea287179a0c995473bfb931c0f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:37Z), 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/IL1041701091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61af263d66469a815d1dc6c8d8dd3bbae09598fc146b631ce7a7462fa23dccf0. 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/IL1041701096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fa5d437af165758ae4ccea4b737b97d67c2d4c316a3b9962be8e5a9ec44dfd. 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/IL1041701097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd594593fc1ad34cf6a7bfd571e20cb8d0fe471c440b3c174b34034da2a0aa090. 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/IL1041701098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb391785e75df53215a87c5d28aef2e17f72288c5ea09b3debd1b3ff399906aa. 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/IL1041701101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044e90db5420cabb394a3b3c360a3c2b252f88af683e594e3d464b62ec1f003e. 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/IL1041701107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965b974022b1e2e731050c77c6ad9174242d1045b3ab6b3a648957ff979d7bd2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:38:45Z), 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/IL1041701113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39d56d53faed48c27e21f62ec6eeb00d62b4f87689b94fd70f7f25dc1ec19b8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/IL1041701114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984a592067e875dfa5390415667fe80ad0484c8c20cd7b954bca95ad70acdf59. 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/IL1041701116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2585c1b6eb5a4731ccddde261442ceb3fdbd7f3022069bb4a8a6fd3b1dac90. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/IL1041701117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35340e758e88310a92f2bcbc13d5810a00a2f3c0bb67880230653210e6653f2e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:46:57Z), 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/IL1041701119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1595b3330e237c8e39dce3aac550f5c75d9568a87bb1b3bace765077effbc6. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/IL1041701124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465aae6fbff45914aff5d2e01614cea881c187533ea3970e36f6634c7064f26f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/IL1041701126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fb692a2a3c2b6fe7965c649db10db964da047c491f652191e0e58b17bda71e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/IL1041701127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abe3e8891392e0068fd537a11fe662947f8025932862b6c6c63e6319a4b5ae8. 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/IL1041701128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79c35fa24bae340032718ddb0d128593bda3433f80fb5efb21e9618a94ca114. 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/IL1041701129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afe1e79c97bd9c07fe823d9cf92c7fe06c99598ad8a5b914b873ea310009d30. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/IL1041701122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe423be16c5314b8e15662275c7faf5414f5a656fc94a555d470f6fbcfe0bfef3. 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/IL1041701123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358008dcd633b33bd7c34f233cfa596750d3df2190bc56a399633822dad3a5eb. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:41:55Z), 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/IL1042300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaabc2dd2c44839ea6cf64250dcdec55aa47e5b552e0d69dab0b9eaad5d0d45a. 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/IL1042300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e67c3ccd3195519c2206fb2b330107450c48d4d15dc58a2470b7b76e3160c03. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/IL1042300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae705b0e4b788ff36d65321479486dd2cbc72d3c5cf78db8a5c41ab0e51c9ce. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/IL7532513777.