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 0xb629e669774fe045ea3ceaa601dc264b9a3579615c4d75b5c3a64cad6643cdfe. 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/c1bcd912-c2b4-44a0-a042-92bec0804d3e.json and https://artists.proofprofile.net/proofs/artist/c1bcd912-c2b4-44a0-a042-92bec0804d3e.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 0x502273f4310eacac5d1365496d6db05c1d875830a685ea977fa9c7a1535670c7. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QM4TW2353145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf564b76546004b939f3c23942dfc2786e33aa734d334ad3645cb3b8a91c8f55a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:40:03Z), 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/QM6N22325805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff471b07fa73545ac28c4ddf0a814e7c503c622f0ea2950f0809dc529c9b8a3. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QM6N22329963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c8a0b6c2b2236e6e6afe03974cf3f91b095b5a27014b182c8f2da205124e37. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/QM6P42346699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce207127e6e6d5a899e609e0f39b99641c40da98b2434305631ab6875d893c0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:39Z), 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/IDA832500871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688289eb49cb1f0c573c0d75087b0608ff6f707f53eb1e2a1e771669dea18637. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM7282370173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fd9b42002d1442785d9628c437cea9959079cf4b5dc9dd0393fc3f144e106a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:10:26Z), 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/IDA832500878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80e398315f7fbd81182b2f2bb4fafec30e180a20dc2c0783a8a76bdeadf63c6. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/IDA832500866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a4cea9a209b63910fdfb25aa4843a27f2ba2ac02ea50004520336bb01fd0e4. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QM7282370195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca92bc477d6af13e661fbb8b5ff3aaa5657d7431a55b9d35c602051bf7e36d7e. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/QMFME2313172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd874d36b3456cd7f2fe5b99597fb5dc3fd1f593f60305376a1a8524df435f0e. 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/IDA832400732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a8d96e936b56ac26f8200762aa781d14f35530a4262bebed17c72f0e147dfd. 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/IDA832400927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46447f60832cf24e9b27eb613aaf16c1b1e785cd45f72bf77686d6334f5dd79. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/IDA832400785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b9d202382448b52a64a1e19df54b42cb551f98d4f359981fc18180bee6603f. 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/IDA832400931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1026999d218315c4d9fc57c3fa6c13b76eae96f9a012789cfbbbc2ab55256e7. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:55:01Z), 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/IDA832403745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc233421c4b88e5fff9469c671c55bc3cf142fba96b1e16b455db84788359d8. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/IDA832403639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd079e7f81d87ab04786804f649d43d355864e0d7e5fe664beed5cbd25b68ad0. 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/IDA832404764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c9d80583f7b99319e99a73b5c806c7b05bd572aebc392febb3f5396cc64cd3. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/IDA832403743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac72a691e82ba57358effca5180ce0621e5df1a8fe8c5e470a0d3fd42c9a2d18. Chain 2 (Bitcoin): anchored in block 957674 (2026-07-12T07:50:41Z), 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/QZYHM2500339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43eea01d26c8c2ba9caaf0547eff5d7aed44800c2bea2b2784028acaac030aff. 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/IDA832500357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27374a77fb76e4b049c4ba40001914c753b133998b85d48a01695a8f2e98345d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:52:13Z), 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/IDA832500490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28b11480e0ace2af32f5d98455b8dfa0e9e6550290d137fa5f78b1c822a2f33. 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/IDA832500825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ce1458c5fd9b2855cc7a75aeaff5965903aa8a954c14498746280dcebb075c. 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/IDA832501117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e515652df817c6365916a593449933b70cfc5d5b557a99f1ac9d9a7e58fde9. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/IDA832501457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7644f015f1483c7a9970be969bd17701a6a9d2c42bc5529f236404bd10a377. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/IDA832501509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7aedd02e7bdf1138a48ebc657c3b99a69b5a3297477902f6d6840994f76fa2. 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/IDA832500617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d266ca6e5318027d5097bf2ecba0b791df98ebaaf6b132c573df6b2e47a2b1d. 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/IDA832501908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0ddaecd781535a9434ee8cacfe32b2a963e7f732a80b42573c1d27993aa2c1. 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/AEA3A2127685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693b029d014161905df9ecd460c78fa691ca0aa1935a61fffbb733c0c9c8348b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AEA3A2136737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8904bd538630c1cd9d1d773aa42046f26784193b4ffcec26f6e2c71c8ff9cfcb. 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/AEA3A2158657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7285c178ec9212175ee2e27440216722c6e0b7fbb54fd8b83bea9c92f34a22aa. 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/GXBAV2117053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68f767192831361fa86f5310ef47188a5fa8a85922043edb7c63274ae3395d9. 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/GXBAV2118750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c306feddf97a0c0cd805d4073a94e81687704b3f1f30ebd5883f6c4ba4364f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:25:48Z), 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/GXBAV2130319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc414f62b013c74694058253a0e1db2ee6eb345b5b6857c03b6d990e741034c24. 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/GXBAV2163492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c5b2bf670564665ee829b5cb9ccfc2bf0f2817f35a1f20d474c9332dd8068e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:22Z), 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/GXBAV2103001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc8af17a997cf8cb3ebf20eb90c304767852d5ba1a0483e3cd0a96e8f911133. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GXBAV2140292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d663290959c90ef178df58a04e758bfe2f04d47921fed82568c89783a9c28a3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/IDA832503700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3962b14474d4c65f023329b6f6e62c7d29c9832a11bbf18f09f1212bc2977426. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/IDA832504260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a0c614f4e7f346a0010ba794c1cfb23cd704558ef18614d3f143c1de5d500c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:42:54Z), 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/IDA832504382.