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 0xd155c6d0da5d1f1d902199f10b09a7a8642d5f3a4797de9a3250b25eeefff7bd. 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/236af2d7-9ef8-4fbe-96b9-fec0b7dde681.json and https://artists.proofprofile.net/proofs/artist/236af2d7-9ef8-4fbe-96b9-fec0b7dde681.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 0x27ac3063c91da0a15c032cc006bb9c1b747ee88aedafe5a1d980cfa371370b7e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:57:39Z), 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/QZDA42115264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac798e20dda795cd13bbe2ce25ddd027e5a11d04da5f42ab6173e9d624b23cc8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZDA42115265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6670d6787bbd970d0b7bb09304831ce1f4b27a1ca7ea0e7d1acdbc86f90f1c39. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:36:43Z), 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/QZDA42115266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda2c73a9f33383c910798de71e7d9fc52e7bf0e1f57a718ff9778057017db42. 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/QZDA42116484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636b2f969e38a16553aa9d4656a8acec8b3ee3a6d6a75f0dcfbde564145831a8. 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/QZDA42116485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbe45fb352a08344edeed5d4fb21db121693c112d424e2126d4eb8f59f5fdc4. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZDA42116488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8478d2ff343639c8b10c74b249d28a24e7c3307e6ce2d3b20edf1a0c97d95e3a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:00:14Z), 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/QZDA42116489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a9a09b4f199ddc0c4c664e90a03aac4d80b88c8f264783f649504f1c73e50f. 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/QZDA42116491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74805e0ecfb07f45a2d285c3ef3585ddc40c4cc7ec312fecd023870f761b97d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZDA42116492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50262fad1958eb53b5f8964d911d4d19b97a403983d838b127ab12b842d92815. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:45Z), 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/QZDA42116493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38167d3ab5f69f93d18ee4d731059cb2a6f8cf14df5a09b497b36e9b4f419d53. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:09Z), 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/QZDA42116494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7c36301ab1186efe14869fd05163c884a9871ae9c524f378c8ca966892c015. 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/QZDA42118401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15adb5f79ce78e5b5b2ee2aab40d19368dc9b4dec7b876c03a03c550e3ce6b97. 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/QZDA42118403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b603bbc117dbcc9c305dee3c62072a57017385ca5911b760c1df1a06dd80206. 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/QZDA42118408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5033ab8e16ef33777b28fde3243d964c58a7f96b20225db7d0d44f15e41238cd. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZDA42118409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf623ae1e14ffc990cdd745f68f6bf18a55bde15e903893a53954d7c6c692798. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZDA42118410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ff796e4d18c99cc949515c548212a41380c9bc9c4c02648fa446ea9da9e209. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHN72118684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e5b12fdc0f7e48d7cc77dcd99c090529f94d8d11a353e4bbe7a6ae5990beee. 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/QZK6M2161577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99a8fb146065a642b39334fc3443e36a166d37df4b307040d07535b084514a8. 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/QZNWQ2112875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e8179c741e31f222d3097cf2aeedbcea840acef3b448f016b57921065ed308. 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/QZNWU2156098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de96825f997bfe8f1f7dcb5edad2f5f935eaf4bfaf8955e40043ec94b27e1d6. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZPLS2163023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667b4d2d44ec3cf6f7fa09dfd2b424b4f025f5eb8188fcc19c27579bd7b20c6e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:16:59Z), 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/QZK6Q2228219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9db13199095933c3d28f80c01bc8998d122b529c6f87dbdd029027ff27f751. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:31:38Z), 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/QZNWR2285978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e452895576b5572a98a6df8953744c7bceef46905e0724dfb5a720675368ec9. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZNWR2287354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0817fcb34830374e513fca6b1f8f91c59ffb316f6872eecc4a975eb1c46a9515. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:22:01Z), 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/QZPLR2265738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c915b215d600822a701e5228564158736cba900b06610137dfb3d5da9dbbea. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:59Z), 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/QZPLR2268579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9930b0c2d58ca32b8d874ccd3335d380d4698c5ed8fbc167583f2527cd4d18. 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/QZFZ42332125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d39a72bd3bb6cab3dc45896425b9bf612b021cb0b6b3563627768056d9e6cb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFZ42332126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdde0687a2f069c77537dd9db739b04675af1685cf14b6517443e61ce7579e0. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZNWR2363930.
Confieso (Maria Jose) La Gilguerita Mayor