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 0x3305115185e78fd34c6fbea5b78ffe60d5456b4f0dbea0273efcc041104c7ace. 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/02a1e9b3-ea0c-424c-b6b6-652624ce1c97.json and https://artists.proofprofile.net/proofs/artist/02a1e9b3-ea0c-424c-b6b6-652624ce1c97.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 0x9bbecc8ce1d58e71d61b51bb23eb6dfeeb3b0c1c5e6224837456bc3b43629ad6. 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/ARF411600388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728761663274016885717e6271d6bfe7e6ed0d305f3a91bf936140816af5b964. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/ARF411701271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b169a9c9a3c1d56e9aaa35bf165f83036a5778d11cabd912680d512c999100. 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/ARF411701274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6ac102691526d795504ee8dbd242c4e7c32e405ff2aaf338f7a5ee915d27f9. 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/ARF411900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c48fa076620e7770e18eabcbb2926cf18a6d4487347e17c15627fa595f3d0b9. 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/ARF411900295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6ac102691526d795504ee8dbd242c4e7c32e405ff2aaf338f7a5ee915d27f9. 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/ARF411900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10fae5721c90253c560898b9a3d3fc3f48d2124dc1f5fde5b3198a82ee6fc2c. 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/ARF410500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c1614730d23793b3652bf0b77e2d1b9a4b9d7e95699d64e734f317eae026e9. 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/ARF410701462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c1614730d23793b3652bf0b77e2d1b9a4b9d7e95699d64e734f317eae026e9. 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/ARF410701462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0550b5b6aeb5879795ee7113f400481e9d4d1696428534fb794a455791d1a9be. 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/ARF410091532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757aaf940d9a68cd48cd67009899f7dbe682bcee9913041587d4051ee6888fcd. 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/ARF410600420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697424af046c61a608803534d196548e2a7fdc61d8c0ea22cba7d1aaf94dc27b. 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/ARF410801149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55338bd61ab266c8778cb1c6b3b94c45388a1db8bc7ba757ea29ac44b50aa8d. 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/ARF411500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697424af046c61a608803534d196548e2a7fdc61d8c0ea22cba7d1aaf94dc27b. 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/ARF410801149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10fae5721c90253c560898b9a3d3fc3f48d2124dc1f5fde5b3198a82ee6fc2c. 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/ARF410500099.
Vintage Café: Lounge & Jazz Blends (Special Selection), Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0550b5b6aeb5879795ee7113f400481e9d4d1696428534fb794a455791d1a9be. 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/ARF410091532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6ac102691526d795504ee8dbd242c4e7c32e405ff2aaf338f7a5ee915d27f9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ARF411900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c1614730d23793b3652bf0b77e2d1b9a4b9d7e95699d64e734f317eae026e9. 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/ARF410701462.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b169a9c9a3c1d56e9aaa35bf165f83036a5778d11cabd912680d512c999100. 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/ARF411701274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd91f6a403679f9a415b98f314c77103b997dfdbfb4c725aac3909b9cee211b. 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/ARF411701270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb9a94e5ed044e9ac9d2f37f595e207b6016d8ad1b53f7735f2f1be7b12f4e. 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/ARF412400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa674df24e6a876ed22b0e0f9faf770b38c21f0ec8591f335e1e33d9cafe844fe. 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/ARF412300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a97197011cee973582062c1f9ef7135fff636d3080a1879b7b4fac756eed7cf. 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/ARF412300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55338bd61ab266c8778cb1c6b3b94c45388a1db8bc7ba757ea29ac44b50aa8d. 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/ARF411500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef74fc6ad1c6230ef7005448c04ae56cc23faf270884c712bc578a0247f3245f. 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/ARF412000177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0550b5b6aeb5879795ee7113f400481e9d4d1696428534fb794a455791d1a9be. 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/ARF410091532.