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 0xe3637b8ca5bf4a711eb2fc8ace223fb143478901266ef046d835858ffd613c71. 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/fe985e82-a6dc-45d0-8d85-16771c173700.json and https://artists.proofprofile.net/proofs/artist/fe985e82-a6dc-45d0-8d85-16771c173700.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 0x367484aaceb45e4bf46622091797f40ad74c2c8e3a62529cd1530345948af792. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM3DF2408528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8186fd48f55bb6021eed5f243706f23c3a1cb820c6674f5f3731c2404282418e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US3DF2507848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d153c93874c3ade2bda025ee91f0b54c7254357b1e36c7bf8666965ea8325cf. 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/US3DF2507846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3a6046b193f5310f44181ee50a87e857b369d5ca8cd51ba4fd7e38dbdf08c6. 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/US3DF2515918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde9e5c82c2942dc8307d59fd52e7061b29bcf28bfac6027761bba8248ffac32. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/US3DF2525711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf31b6b03b61e5eed14f1a5ac4c6fc08473fb58295e1f73812564e6408f8636. 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/US3DF2525712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c23a53dad3ed3240ca62c090f5d2b239d1d2634ccb0cbfeac8a355d90158ce. 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/US3DF2532225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9fbd6117644a4bef0a1a48328ff7371b2bee40f40d0c80ecab9a27749dee07. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US3DF2532223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4800c26b29a473ff886193a0d169f694a576f4467f25aacae2d30a0d0ebf12. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/US3DF2535849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e18ce2179c0b59797b4c8cf8973ffd4d7ea20731c7cbfd4a10ac7955d3fce6. 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/US3DF2547740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde67630de025145aaca03f209bc58ea5f7ae479ebcf11635e977fbd2a39af00b. 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/US3DF2547741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0055538f7a74ad16d51bc642ed45e9c6cb924bb40ce5cc10734d26477aca043. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/US3DF2557491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630041c26356089b9ca99e1b9d6c4a031575ebcd9a81ec0906366b8c4caf1c4c. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/US3DF2583426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d8de9a2c215dd5b2b68859ba58512e0c466b37856312157c6cfe77511a032b. 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/US3DF2583427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f687ad4eb2589a6253829167fcfe47ae2272dc36e4185ae1be2dc3c3ad92d9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/US3DF2583425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0718cbdaf72c31ef88106a4128be33ce92ed12453aa27361ab350deb9d20f763. 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/US3DF2598714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7950f58113e63989aea9bfc6aef09b7c43fb2ba75e8f342c8125eeb3738d5382. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USANG2502254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfdd8360156df511c488c7c205a744c8761ddac15063b4df7597ec7a3e9d1a1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USANG2502253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bb768c0e887bef2123e672aa61d4d79c0701f9065dcc837be2062540c60999. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USANG2500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8163baee64cc18c9339c3553a5c694a7dcd0fba82bce6fef62c7c3d4da048be. 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/USANG2505112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac4e9de74c2a10e7bf4c275c951e383f621d9415a4405f9411565722d94f333. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USANG2516962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55b9ab0a327b9f3abc92655b2d44027739d8a0d0a7a1d58aa5c02a98edc619d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USANG2516963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd4d6a2634629bcba6bbb1fdaaa4ed274854ac29015a21bc4429d100f27c02e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USANG2532448.