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 0x9bdfa32fd773f30a319ce9b011376b54e4a81bb1d2a038421b1e42647300a85d. 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/7aab09b2-b81c-429c-aa75-0690f3f4413a.json and https://artists.proofprofile.net/proofs/artist/7aab09b2-b81c-429c-aa75-0690f3f4413a.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 0xd344c0b1c6033f7ff89c014507073a7667be494ba39bf73d448bde019802f8f7. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:09:15Z), 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/NG25T0610217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7f3ad29e4f742e124af2ae81cb4d6f360e0c0547402c53540ed8b02a0d92f8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:52:39Z), 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/NG25T0610219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0b2d2026a8c23a4eab473e53a80d0415e443a2bbf4bfae9ced8c73f021e225. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/NG25T0610220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e3f5ba45fbe672a8c1d45377dc341ca54a35192d857baa815f5c738784da9e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NG25T0610222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd090f0d52db581e8d5fe73fbcdf3aa8110b5309dac754cd7cc083172e923e5f1. 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/NG25T0610225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac2e3a9755f7324310648c669e4e363843d3997547e6abaeaae298f3e25e60e. 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/NG25T0610226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c94de80d066045dd05ca3cbd46db88df8450d53cd44bef6c2ac73b713829022. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NG25T0610228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6793ba68497fd9323e37cd9be55098680c9f471f85af839576047544a953d63. 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/NG25T0610229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19b1da6ace64221f6cd8d504753b832bc5ba0aea6b7c5420d121b7931b50425. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:34:38Z), 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/NG25T0610230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ea140f10df5b1b867cbdb34da794b67f7750674e9290af27e13377350370aa. 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/NG25T0610231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25bd7107aa423edc3d2c5d138c33789eade2c79b0971ad66c45bb2974312a8c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/NG25T0610232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec852d2c99628a593902bd0cf623a3efa1cbc1195943cba418bc4d560f8cd8b. 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/NG25T0610233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9233de1718efdce9e99fc31c38b0096d6f89647bfedb1f40ec919eeb94e3d9a0. 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/NG25T0610139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6285321a23c0e39252beb9da3076cef3d7235d4a5437cf31a0cb6a9bbd3ca9fa. 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/NG25T0610140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e94efed9d1137a3fcf1836cb0a7300fdf9d9c12fcf61b5d8089228cc4dadf70. 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/NG25T0610141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263c4922dc81c1fcc9aa4188b9c8995cfba68aa576154430675d37a4c760dce1. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:03:02Z), 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/NG25T0610142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c1c3bf0bb99f2e4e78f016c7ebb07e2e30d7df7060b944843ee54ac1852980. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/NG25T0610149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f4fb3d08be30dfcde1f86c78776f4059a957fb0aef1bc1785497674aa9107e. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/NG25T0610274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c26518cee13497c9ffdd042f523a1234fe3242a38859688ed55a1c9671ce3b7. 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/NG25T0610277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c78590b3eec57f2c1f9de86986fb210cce2ca7c8795c31e3c0bfb0f98ab26a8. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:36:03Z), 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/NG25T0610279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89094f7056b5e4a37b729b0cc628dcc469e24731519c0caba597f0047072907d. 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/QMFMF1435535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa424c9e2831ffe46adaa094e02225f4cf8e63e9b3335cf06af797f74a4c5e510. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/QZ5FN1857957.