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 0xd6c111fb2020ebca940128d72e1fbc520bf8c9eee38e7552b601ee3eec4bbd97. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5751d91c-6ba3-4a18-8bce-a25abcd40b11.json and https://artists.proofprofile.net/proofs/artist/5751d91c-6ba3-4a18-8bce-a25abcd40b11.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 0x93af73438fc4c65ecb47ea6586c547cb90b6f2881a6dbc9aa921ef18e45699b4. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/ARF412000228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537eefef41b7396c49344cfd2834a3429cd8b2c51512ae62cec352229b1a2e4b. 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/ARF412300358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf382f9bc4cab920ef189e74cc3da16f86e94bce315ac5540f7cf6cb8c5e9d91. 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/ARF411000515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166c03c6f42c9ad46147c8fdb34fc7836ff2c7a12aba35b83f90ac0a0cdafa03. 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/ARF411000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620b0c504b3fe99a5e1271fb345891e5edb45d467477f08b137d81853b5df7f9. 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/ARF411200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd321018e7ab288cfa3b388317b992c8f601df7334ed12c7a09de18bd02a596c3. 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/ARF412000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5133e46fb05629559d220efe963b3abed6694d5a1acf83189b946149d93cb2. 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/ARF412400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf382f9bc4cab920ef189e74cc3da16f86e94bce315ac5540f7cf6cb8c5e9d91. 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/ARF411000515.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb124aad23c18c14b389b897c35b26d32c1bbf10621feecd6a2b70ec522811e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ARF412100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c07501a7fbb43ab1356753fbf4cb0cb12e1f353ddca4ba3fc7a8a982b4a042a. 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/ARF411400340.
I Never Thought I'd See the Day - Dalbani Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695b9ec0f96c89ac0ec9566afe9ce86413f11aef9463f19d37b998bdc9766ee2. 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/ARF412100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720c32e5828d548cb00caf8ae907083143ea96d51b8b218d5e5c8a60c49c5e14. 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/ARF412300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c07501a7fbb43ab1356753fbf4cb0cb12e1f353ddca4ba3fc7a8a982b4a042a. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/ARF411400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb124aad23c18c14b389b897c35b26d32c1bbf10621feecd6a2b70ec522811e. 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/ARF412100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537eefef41b7396c49344cfd2834a3429cd8b2c51512ae62cec352229b1a2e4b. 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/ARF412300358.