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 0xaad3c1bbc29e790d6c177f71a26797da49ef289889e59a9895a99288d4517ed5. 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/25154879-bd98-4d32-a2e4-056bead45c68.json and https://artists.proofprofile.net/proofs/artist/25154879-bd98-4d32-a2e4-056bead45c68.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 0x47ea32f277dbde3bff3c3b9a37695e37c8746d7ac067ea443255c4044a6b174f. 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/TCAHP2365995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9584c49c106033b897125d414167959addc53594b064f12298e37aaa04ca402a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIE2419257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212d309a67adeaf3998d3435242b4c2b1edf91825d5e9e50cf9d7e2a0e47c732. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIL2413858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a2ce4438ec3851e981a7c657b93fc8ed0634419ed651b0727e8b4a1e250d69. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAIO2460090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e09fbad43ba1d60fa75adfca818a4a54952cd1253aba0f1a0b835d4185a6589. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAIR2437842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cfb74497b1be3f8b2ccb08374bc07550f3a78ac461379dbe9199e895571d94. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:01Z), 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/TCAIU2423330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dcc6ddc8e0ed03287600b1c5e24445a5cc85012152f5fdca8d331872e4008d. 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/TCAIX2443153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926348b37e77950dd2123661a442fdac61f90a3516bf9d62a5c62a3c2288df57. 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/TCAIX2443178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cf32b6113ec2c1ac602967dd376f1deb0bc13b89e0c448d4edd788686578fd. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TCAJX2507788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddccb44188e013d1889755d85f59515c3f1674f2fb2f82ab8c43b5fa597476e9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:23:09Z), 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/TCAJJ2530262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88fb2549569168ad7b68c73a89675b5ebdd1de40bd6d79de0cae9110f3c86b9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJQ2555627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004e5f481c16c75dc2aea8041c7d144e7be5d9d3c3638847fea0c624dbd72397. 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/TCAJX2507814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ea32f277dbde3bff3c3b9a37695e37c8746d7ac067ea443255c4044a6b174f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAHP2365995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c23048c4dfc8da377191aae1b703d1b7ea983eb862658d031084ea4063f6f1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJX2507827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271394fd38f44150a3a092e8f590a6c76dcce8442881402053233d6654e3a3dd. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAJX2507838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00fee6b67c0a08b6f6b847336bf14fecd87c4cec78b6e24b331a06de2147055. 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/TCAJX2507845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e2a2ed0108b2aac1e8a8c67b1d2a3159f000a0bbdd9335c8f02c0a901b3641. 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/TCAJX2507909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe322e42169377144752156c8d67832a841dd9a3cff564a8546c04ff8ab71e2c1. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAJX2507852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5c86689c8ffa1cdda05724648d6555e426fd9734e71699b945c7e8ab1d1cb6. 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/TCAJX2507858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85518a7b8f50a5a99d17a54786bf80c59acf738872d749aa5e24a740fbb93f94. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:25:45Z), 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/QT65Y2535059.