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 0x5eaf09eefb333280998e0b285ec4171b55357a20c62f7d898e2b3f66f342b927. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73d0ea23-87f6-4058-8b8d-f7e3f6225944.json and https://artists.proofprofile.net/proofs/artist/73d0ea23-87f6-4058-8b8d-f7e3f6225944.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 0x3257c344b2aec217b22a5f4fe879394314748fb6bb40d7bba8cabb56fa53fdc6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFME1937456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fc232d217d870f2bbceb29e2797d4661c2dd3d1a04d30060709dcd194a4098. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFME1937457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0e084d15bf6360425af7dda944383624a5c9ba947e689e0814401fb35850d4. 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/QMFME1937458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60d07095bd9656af79a8669a21c1bc24a2c837e5f4c0ee9040a84b54e9b5652. 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/QMBZ91975440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff67e2bead93be2fa9968e385a3e70dd3a73af293e4bc56da438e46478aab398. 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/QMFME1937460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1401f21c247349674654a857620f2e6fcb39d1bcd2220c395a982289d398f441. 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/QMFME1937461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f21266df97576e7d7f4aac10e46eefd0f165e7d00f9af9bfcf2a3f21a197e47. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMFMF2113759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3257c344b2aec217b22a5f4fe879394314748fb6bb40d7bba8cabb56fa53fdc6. 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/QMFME1937456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fc232d217d870f2bbceb29e2797d4661c2dd3d1a04d30060709dcd194a4098. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFME1937457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60d07095bd9656af79a8669a21c1bc24a2c837e5f4c0ee9040a84b54e9b5652. 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/QMBZ91975440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff67e2bead93be2fa9968e385a3e70dd3a73af293e4bc56da438e46478aab398. 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/QMFME1937460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1401f21c247349674654a857620f2e6fcb39d1bcd2220c395a982289d398f441. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFME1937461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1401f21c247349674654a857620f2e6fcb39d1bcd2220c395a982289d398f441. 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/QMFME1937461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdeb43a4b5c665ccd0e538bbbd7d8a332ff2e8dc9dbab0d4b1215081df3b0c1. 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/FR10S1749413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48393c0fcff22d4c36b653722418372f0e88f6103dfd175dbedb6b79f6be9f85. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR10S1749414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf09d07c7e2bba75b4aa2c4dc2a69e4cab6f8cdd9fdaf8b02e2390e89374008. 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/FR10S1749415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ae2c6df28cf147fa441c6388282d315f47243f51ea129e55ae419e20d922db. 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/FR10S1749416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa9cc6a184e16911b01a839a2d130a57a2bb5f80e591d62f468ade8705ff8e7. 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/GBBTF1400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f68873b90f0d34e8c2d5269e70658accc59af0c444d99b06026497f4a15c5e. 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/GBBTF1400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee66f243ef4d03d00215fdc767d2e7c092e171acb1ea37986319b00fd84947c6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBBTF1400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8e8b337c59aebcc68792f1f61b4b6b16b2130544273e4f0b0bb6c66864bff2. 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/GBBTF1400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7c90af18b7439d5945aa5bd555e1a5c2308a79708b318457908daa422bd42a. 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/GBBTF1400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9ee98a238108e2a14f6317e4650f22346b3bb75908f131c278d190483ad1dc. 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/GBBTF1400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11fba56136daa33a63295c653ea1256181dcb94ae57b2f1364c4504a0003c4d. 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/QMUY41700173.