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 0xd92755f0d6e4ff91949b1b47d75ea7b54ef72e7ff2602204c1bfd6fa69f3cf73. 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/3883e643-7c61-4232-8905-5583c65af4db.json and https://artists.proofprofile.net/proofs/artist/3883e643-7c61-4232-8905-5583c65af4db.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 0x5d27bb409c37ac9c6901be87a4c6b704e809398417d8fbe3cef1b26138b6734e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:41:57Z), 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/SEYOK2135917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f2be020b99db08eea12157c3a90044376891075e3cef259a4712535078fbf7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEYOK2135918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bb6db397346431af1d635ce82902c8da2c1d20e1dc7c6ba00a0d0b7e3d7149. 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/SEYOK2135919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ace33367e732d0d0887952dc610d05adb45a511b9334023ceba41cf47cc7c49. 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/SEYOK2135921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9635c1df146654c22be9eb6c50c0682805812f258d72d2fa4f69a7bbdcdd9f8e. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/SEYOK2140021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b7297a69811f019dbed18cdd93866439818c18f804fc3649f9ce1751e672d6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEYOK2140022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4d475a0a752b451ee3d6d90b2bb6230dbbc3ed5f1e244978ffd5ccde7fc604. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/SEYOK2148531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2cd6813f9ea6d5ede49d923eb6b32522cc7e59b707b2e54e6a56a8a0e1bcfc. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:46Z), 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/SEYOK2211489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a0aef82511a6b639466abe4ea18802349e999828b3abd35f524e80fd1aff5e. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/SEYOK2237220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2220dd9e4a9a2990118e4d28a09dee4c7f6ae4662384e5bcb8612dab68e70e4f. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/SEYOK2312195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88baa6b297eebc8292ecf9fd60c03c33e30fe05c46c7a86854338b89fe53dc7e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2312196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4362a6d0a3343e5116335b37bb9024aa3fb103a3f47155f55c38f336b77170c2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SEYOK2312197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe939bc60d4fb1a372c895db1313384433ac8d2d09747e936d982b8c796814cf3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2312193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518a4dee28d110b9931ae729ffd91a84417daddee96c693755599caaede62a01. 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/SEYOK2330356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dc22f0be8b696a198ad5638b1445b76291661bb684d104eaa49528373c0cbc. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/SEYOK2401677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602173793e49d36b136d8ad949256e8b392f1c389ef9f8bfc64bf3f8edbfaf2d. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/SEYOK2429068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b101b1caa6706f488c7b0818028f48f35a5932292e729e24d9c03345907af0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SEYOK2523550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1752b6f15c4951597d0acaa36ca477de8252d1ef9d24a33e34415f8119c47c6. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/SEYOK2523551.