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 0xb880be5d8e5bcfb89c77eee925bf34d92180f784d79cb8421e05672e3d6138ff. 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/7e0cd653-5627-45ee-9f85-004b40544fb3.json and https://artists.proofprofile.net/proofs/artist/7e0cd653-5627-45ee-9f85-004b40544fb3.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 0x42cc4e1d604e8d005e53c55f2f854b1820095b2ace38753efbc37e6b4f8654cd. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:26:42Z), 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/ALA091900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3a53fddad57a073a8dd091b8cc0015ce227943207db473334c03dca0bd1f62. 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/ALA091900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ff09bd50457bf74d630d4423f4e6a26b2699ceef1239ba7cdded9808931b94. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ALA092000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23db8fc223b08e62ce1430e199a3d41809282ff02e9edcb529e6a24fc0e807f6. 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/ALA092000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf009a8859282f5aba44bf20d7e72df99f3523c95b49a649184e003bd1ef8403. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ALA092100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5536d1e6a2f824422819bca080829aec873673a45780e50d3685440922ca584b. 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/ALA092100148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c62f882b27da72b2637c562dcce57152dd32ac11ef04b18eeb73562b230e9f7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:41:39Z), 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/GX7852200498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc09a4c641afc079033cdb71c018f0464acb6ce6f6ab3ea2825036b73ec9098. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX7852200500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8912d7b9442345e180f01a2101533ae5693d791896aee9610871d223277fb24. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX7852200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc09a4c641afc079033cdb71c018f0464acb6ce6f6ab3ea2825036b73ec9098. 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/GX7852200500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99603afbc5bdff168ba4294fa48c8a6606ab461d9d7fa7a21b5c60e59f2db6be. 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/QZNFJ2302343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0ff73b1e524e9159239107b88630f782a7a31dbc664cbec49da23644a3b2ea. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/GX7852400533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0699c4d2b3d3a5adaf06c89c540ffa2a6a1959957c150417f62a51fed3e8d9. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:40:49Z), 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/GX7852400530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb6b6ede0c3cf0bd5eda5537bf6a18c188e129935b777f7fdf2ba591b7828c2. 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/GX7852400537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7098622d10cc7e8569e411e2254a2283d4f999ae6f1c434ac0c4a12db0ee8a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:51:09Z), 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/GX7852400535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb535dd78601e31e1b3c0c7fea40e2a0bb3717c028038cd3f6dc9648c992ee65. 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/GX7852400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde270f52d0180e447b28464e7b73b51a8a037ee9c09c1b8a1fb3da86e89d9c82. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:07:07Z), 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/GX7852400531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8b898913ef2f009feb4fcf5449845cda2fbdc165a769223a53ba9ffaa6a77c. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GX7852400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b32bf2340c6a114f08ba43ca0fc93e9fc9c2792d7774c76f6120aed8b2ec72. 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/GX7852500853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9f0ff605d418916854ff08ab2a4da250eedcb0b4155c4a20037d5cf4da1393. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:00:05Z), 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/GX7852500848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dde0ff52599d03bec78c855a9559c51803a8c5f0b30c95ab1b08753b69c387. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:03:39Z), 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/GX7852500857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c4a5d4e94149cf96b3a6dc27dcd5fbb37702d7b9b158d13a8997c7fd917edc. 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/DGA0S2445366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7094354d8769e1cf7976bcb886d50c4b6127f288609bbd3a1ea91a8f345f9209. 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/FRX872144160.