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 0xfe2b152f437e8279d8752fd605be4e2b9e75f5bff995d1871236788910bff6a0. 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/ee832d04-2615-4406-82ad-4cbbdff350cf.json and https://artists.proofprofile.net/proofs/artist/ee832d04-2615-4406-82ad-4cbbdff350cf.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 0x9d4c6e687d27bdfc4ae0f14a2cc4b9c3f4615996c122207f2672c5a644fbdfee. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMANG2248719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde98721b73607e7881c40f8feae9384def91a9d005671fc5ec00a1eed5c88179. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USANG2451526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6f264851836aa848212161f6bed7bb9504656493511d5da5895e9224311e4b. 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/DGA0H2494548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd521106bb0feea2ab3faeefb53a315b076cd01e3d6d7254257e51f043a34fe4. 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/DGA0H2494549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5a1b260c6ca0deff36f3ada61506bb85a7cae0d94e7ab6710ea76ba7886837. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USANG2452424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4127d8c4acc3e0603f90a1063d6917e97a0b75ff0babfe194d12e1e536c5c94. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:03:19Z), 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/USANG2452423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c069be19d17611f1737a95ecc64c5461f9e6734f300c7670282e0d340bb5848. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA0L2406477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748579d113108a4d78aca72de8e524e31f91e7b4cbf94556e2fd072c2ecd6b87. 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/DGA0L2406478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5efc9d24f480c4c0f9c054aea35ee5d8ed703ff844aeb24b9d052e36054e292. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USANG2477672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0930e45b0012b57c3f947c8bcbffca575002146f7b66e341d05a5c2410948196. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USANG2477674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddb431e785192ef0e89a1e459d4f511ca68580aa0ef5fa59d328532feb2e7bc. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:44:28Z), 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/USANG2477673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1ea5e0350f91e2f9a96ec38524b1d36504ed624d01744a392a5c9e1a283069. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:03:53Z), 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/DGA0R2434910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc209594aefd3322212e9e74521ed99de44249d2f3c7e04c7463d26d768bd543a. 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/DGA0R2434911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08085cea3bfb162d5b1a095bc9272288b24132613b146c44aab3e1ec6b783a8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA0R2434912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ca974f8e9bdaef7be9f9d8caae0ae62cc1632dd1d0d415b1bd1c922e405381. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:47:02Z), 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/DGA0R2457545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca88d4dd4abff3a533dba912cd24a5722328b36f16234ceb875f5e0145e4447f. 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/DGA0R2457546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447b635ec42d346bb79f20b333d1ddfef26760d211b8d90c3757f9032d498576. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DGA0R2457547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a9783697368c3077dcc7b83b4fa4d067e52a0afc386ee8276105b0a99605ee. 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/DGA0R2474802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f7526db08c460f645c93433ef33fd6fdd299b826be1baa348791ff3d087def. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DGA0R2474803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e321b5a6a1a7bcce10807a2580c6e840b1f52de83a471d55eb502e8c232b19. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DGA0R2473825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc601dac6125fe4adfc6602a13123e1e79185fd010bd759b7b0815d48842490e7. 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/DGA0R2473826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176f4f9fdaba0d2a8aefc7618271e1dec27b3279d95cfea87c5e89b07722c516. 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/DGA0R2473827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904f3fd8f3d6acaa0dbc6868af076adb417743e1942a2a33f29a68a4d8457072. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA052405201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69371a03609dbacf9f29ad59d88250fe631ce1f42d5abc43ce786c3f6da0f94e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZZEB2468980.