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 0x0744e7a75ad07689fb33d7598b7fee84d3c5c25cd2f12bc8e3ffecdb89fa36f3. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5433f84d-a3cb-4c70-b385-06add4772075.json and https://artists.proofprofile.net/proofs/artist/5433f84d-a3cb-4c70-b385-06add4772075.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 0x2ff7e43bf1bc75e5075300404d100b67a06448356b4820bb50c3b122899c466c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PT1GX1800160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aacd19eaf20181c2efe93d1e2f44b2b1abd30975e9aba71fda05710d18e1cf6. 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/PT1GX1800161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bbb6552fe8852298d065d4dc2162d3a6318cf9f2ccd625c13cfaf4daff1f83. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PT1GX1800162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce855500bad34460ea964c5a4a12135c8671d234348e3b52128152474d382cc1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PT1GX1800163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a592952261a9ba0f1254b950c06b006bed7970f2d79fb8d0aae89f2cfe92cdd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PT1GX1800164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85089df2c1cad85ded478a0bdbd93db78cc6a304d55ce2d35612e993c149b473. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PT1GX1800165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d3c3d3cc376916d94d2107fb5dbe01cece688faf600f4d0b16aac5d1452549. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PT1GX1800166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32d93e70369e079a5e7395a6bd9d67930d48a9504e407efe83fa23335825659. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PT1GX1800167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726a003643c4c31cf31db8cc7d3abb342a094c5ad21797e9f4fc2c4bdb0144fc. 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/PT1GX1800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2337d6a324e2124b6ab227ff60c8230140aeb4ea5c46f32c63dc7d7a40cc67a8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PT1GX1800170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6869e6f6a7fe0c78250d55b850c511a43d4391fc0436cc5a0b14c9b119863483. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2X42213486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c20aee17b17b3c980c2479eb35c7bee28211d6c29a28d30a697ea4c8f52b01c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2X42213487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab15949cf5115cc4d2c12aaf3d47eac1b71f8d8bc6931a4a8c9a5d1b8cb796c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2X42213488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f83f62700ecd126bb678439892d5f6c23f1320b15e08afe85b8ac7a6db5d60. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR2X42213490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dccd615a3d8b4d8e654f853a130ab964c8ee5f10fd7ecfd3bbf7437c7f85d5f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR2X42213492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2022be8b00f95aa1f11a73dc61e4c241cde62c2f83421fc8e281296731679a39. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2X42213494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7141dfdc356adb81d927e63c1bd821f333c12bd8c211b100ffcbeda82da6023. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR2X42213495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bbb6552fe8852298d065d4dc2162d3a6318cf9f2ccd625c13cfaf4daff1f83. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PT1GX1800162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aacd19eaf20181c2efe93d1e2f44b2b1abd30975e9aba71fda05710d18e1cf6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PT1GX1800161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dc30d684c3b2cb009a50ce43c90d342988ae810898861e891b047d093d6d15. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX282393964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a5d21ff3cb0011ef0d1a666dedc291dac1db5552ebb30b28551945f42829e9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRX282393965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2022be8b00f95aa1f11a73dc61e4c241cde62c2f83421fc8e281296731679a39. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR2X42213494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab15949cf5115cc4d2c12aaf3d47eac1b71f8d8bc6931a4a8c9a5d1b8cb796c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR2X42213488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36633c1e9787a341df52eec1818b002daea293ff4a3bd6e1709c75a970e5c355. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR10S2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01bf4ca261d982b49c9e6ce1b2f4801fe93b15a92ff63da4352aac8192bb66b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX202093511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4babf213f1a0ccde23fc02a95ddb2880529449e881f7f7011a9743ba881079d5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX282011812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b172f979c975213dae0debaa17ba8d0d93ea5fbb95e118ee5f8591645a702c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX282011813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01bf4ca261d982b49c9e6ce1b2f4801fe93b15a92ff63da4352aac8192bb66b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX202093511.