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 0xf24efe631f807d4d30bf948aabd24d9b7355e0385208ce3eafc45f0fb256a77f. 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/f583788f-e3f6-49d4-9ce6-bafd3884fa96.json and https://artists.proofprofile.net/proofs/artist/f583788f-e3f6-49d4-9ce6-bafd3884fa96.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 0x0322a6ef5f6b3d5c2cb4b37ac9260347a745bdf7c958b2098ee4c366593aa143. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:46:40Z), 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/QZP7F2163118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551c98311a172a6beeb6626e066d0215db7cf7e99a13fbab883519816feb759f. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:04:13Z), 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/QZP7F2163125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d69a32d9620ede0d01a818f9d1262816c49dcec839a9fd34522b103adda0d69. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:01:32Z), 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/QZP7F2163129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9ecc29b9fb5ff21565b77f98ddc97a1ea70817417e5a817432081b7b05c0c2. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:43:13Z), 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/QZP7F2163132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f63f9c593f434f888fe77c7ab1bd63bb822ec4d5b0ef43f70c11096878253e4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:10Z), 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/QZP7F2163134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d71b283a78dea575c702a962b84db39fbf134fbd6e91b450aa20771771696d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZP7F2163148.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39628cd54024edea2bcefd037684b7e5e80e0e29b21b73750d053722d75bbd62. 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/QZP7F2163149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9871203df25a46c8b29e515575e74f5fe51553007bca0b94fb06b9cd94d242. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZP7F2163150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a99afdec88ce2c193465ed7c2693136f6852a5210150f068694c4e0ca51dc5. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZP7F2163151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f64635d47a1b45e15c6d483a70a87cea895f9f160e1f4bd29f78961eb9edb1. 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/QZP7F2163152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca01ed6dc0226eb0fc2a8d2d08be4e7c7500ff7166064451e3533c1584578ddc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZP7F2163153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00294a0def7d041229adbc19697ca32a3f309d49ae2225cdda3f78cc602145f4. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:29:00Z), 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/QZP7F2163154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8691c91bc75da76bf24e0d4fd8fd21bd5a14ba73fb7d7a18ef746973a66f530. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZP7F2163155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccc48b68878afcb80907b6ad2546be72c132797fc1a4b053f92c75deed26cb7. 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/QZP7F2163156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd342ec94cba575bb82cce0e97867419c1b31b6a4f973f098156ecd23a743a439. 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/QZP7F2163157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3fdf83bd23100bd0a95a13bdbf1459ffa7f0a75c470431a6055f2708a57792. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:50:33Z), 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/QZP7F2163161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c095c10ed81afee42e5eb539d84249506a1bedd4006c55386aee1e3d4720367. 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/QZP7F2163162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd49c3c6bfba2bc98af411bd8165dd97cc7ef13af3c34401df6d4bbfc56c356e. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZP7F2163164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cde3a9bbc1fdc2301b5ec3784491337e87512f99002018768f76675018cb19. 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/QZP7F2163172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda13a8098f46d86245a3c1cd75c0999fa6c3b7eeca712fd5fef8bec81bb35097. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:58:26Z), 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/QZP7F2163180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e72cf67ec0a0b6df1d4165945cca0888bdfb1ced4c26bca1ab6407b181b9ac5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:12:28Z), 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/QZP7F2163181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd477fd03478d07fdf35fcb610a966d5eab8f1311b826b073384a5cc695ac30. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZP7F2163198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d2cc9a630a3bbcaa5b9b8f813d4303316dda1f3d6be93cbc1450335835ce04. 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/QZP7F2163201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53552d16e729ee8ff7a4eebe1e43e5d9a581604684da20066f75e9423af3ba2f. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QZP7F2163202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3cac15b71cfba96d29cb4de6900a46cde1d8fcad817a0534669b3011ee4857. 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/QZP7F2163213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76dee982487191c90f8660368d1fdfc6625db21820aaea41e5a3d808e8f0fb1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZP7F2163215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904f1e9ebfb80de802bddefff93131dee77ec9d041091453fec579de8700e089. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZP7F2163237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf2b4c0bb8480bd66feea6c194efbacc5040ee977241a490251f606da1c9425. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZP7F2163239.