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 0xc19d7177dc2422591ca742c37f42a0951188d198d4bd87db2ba6db512b7b82d3. 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/dde80015-f46d-43ae-a39a-716e02324872.json and https://artists.proofprofile.net/proofs/artist/dde80015-f46d-43ae-a39a-716e02324872.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 0x258c4f36fcb0b983bddd08360ef718b63918e22bc0a4929f480ed5071975d34a. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZS7J2451943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e2bf557dca2e30649ececdedc23dce0159386e0fafdd88eb06a19edd19e671. 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/QZS7J2440094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9456b4712faf08c22df99204cc402ad9b6ad70cad0ce49b01c6e4529f6410c7b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:08:39Z), 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/QZS7J2443229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cad9585a11f7147ef6131836510d8b76f5dcaf049a13664ae8a12309a57e429. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZQAY2359001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df35727c19c21fb8c75b8797bd911cb2c9c577ae0aacc32b5a89f9c101163c9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZQAY2307617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbb6329c549e73143275a561f40d78f549739bda1dce62bc5f529b3354ccd73. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZQAY2321551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80805c4b95e35e91168ce209e0fc8b3b5aace840fcd939649afe0fa15c348415. 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/QZQAY2344234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd885d6c75c4ad7188c795a4d45c5ba748041441c88cf740a8c8128772e4c65c7. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/LKA000010063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc667cf74ad93b081f171951311fc1d4e140211422d1ce6fd52ccc2ef8b4cf349. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/LKA000010087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5498812cf7b880da14fb450353c24be1484ab43683a34f9218489b409f79e52a. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:46:32Z), 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/LKA000010036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea79d820b513d163636464e6a990640c5adcbe1a7335fa1cc77e9454e0517be. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/LKA000010010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4a365688d134493411feddf868999d7a9c08a3111ed8b978105dd6e2e70544. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QMDA61814855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925f775dc8af3dc64cd86e67692173d1d96f6537de9a7100780963f4b14a9645. 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/QM6P42084653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095c099f163842dac9ef90e244018d2c29209bb133334b23d1ed4aeeb1bf5640. 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/QMFMF2025330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aed9b14cde45b25649927ff8bb656af846109a690cf00c02faf1f785283724. 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/QZS7J2391715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0de78fdd95cf6b7fae543d8dd62e5055afdc80fa75f9ab4f0ee7a2701c47d3. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZS7J2328130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3911f78a9d87620373c0decd34f14a2516e40c59bf81f771308d6353b59dbc31. 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/QZS7J2307872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d6bd5fc37a9997abd9842c1b483f1b8660d1ca40d1f6837de40cb1f78b6536. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZS7J2349981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57f8b91571d2f25ac869f4c3228faadb38decd40c063ec8beb466d47e73fb4b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:34:54Z), 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/QZS7J2374084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec26aa880b2ab8f4058602ef2dc109bab5527d6158209239f3e290b942f9396. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZS7J2355570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a037a4f8bc028d0f089ac25e2b86af06e17cc56fd7563ab18c55409ff06693. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZSYP2322878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed46677317d2e8136457fedf5d397e665023b6d795453768fcf4071f2ba2eef0. 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/QZSYP2353131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e63fa0749d2386b4c2885176b57f39cd06dd85a4cd31ea7535372a0a019b62. 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/QZSYP2335217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602f59287d40c00a4ec96ef31ce536a688fd153aaac288e9dae6b8d932e66337. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZSYP2354240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d61e1d1e5e420148b2b2c3bf4f50262fbd4802594a07df2ba869230df0d4b91. 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/QZSYP2351219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58742c9c7be149a798ea6ca1cb5c0b1ed0ffd47eebadcaffef3ab1d297a7901f. 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/QZSYP2340886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb4a22a0969d225112ce132a15156486593b0433f8bc119216bf73671224e5d. 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/QZSYP2381221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72b63ec52f253d850fb47c84c58bb8f246e9f5c8ff90d52ddae37ec6b0d8045. 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/QZSYP2344365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe262a1d63d8054ab8631f438f75a44b104e88b93da251c0370780afc001af625. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:43:58Z), 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/QZSYP2325353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889be29d976d70a7f63e1f86454d037082031c9ff17f9bd5cac9d17bd1226157. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/LKA000010001.