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 0x75ef6deb1098ae806935b3c5446bfe0031293cc07fac929ecda24bd994528a3f. 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/01e48cb0-55a6-49e1-8317-0d913562984d.json and https://artists.proofprofile.net/proofs/artist/01e48cb0-55a6-49e1-8317-0d913562984d.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 0xede4da191703b2030bee865f34a699bb70a3dffc292e85bbaca77b6117db8baf. 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/QZNWY2302958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d35e37a2c971bd8659245a6aa13fbb42e7eb61fafd6c0f0d463b0468f52b99. 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/QZES62363495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b10b0c6883b8a00dce888259a1d08382ac28308219ff4ee4d814a44cc3f8b5c. 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/QZ93L2044847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce57b223031e3403acfaab29c6380f03dd068ca24845bda6a33d6d031077d718. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM42K1990178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d35e37a2c971bd8659245a6aa13fbb42e7eb61fafd6c0f0d463b0468f52b99. 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/QZES62363495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce57b223031e3403acfaab29c6380f03dd068ca24845bda6a33d6d031077d718. 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/QM42K1990178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5addea106ffeaf81f94f51c7a36c93ca554bd77d7d5f03ce925c074dbfd06e1. 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/QZFYY2251817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16882febabf254e19824973612203da4810029a7c10e17b8899eda95c2e517d7. 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/QZHNA2285745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b78948ab8df870f49b68d2e7519b8f928afed5eaeb10a77b3b94e73481aec5f. 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/QZHNA2288087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5918ab76b4b211925269029135f91db826ee6047168ac05f4b5c22aa7c65d55. 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/QZHNA2288088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39da6fe842f4b1e95e25229eef40ede824157c7895b808dccf66b2f95b2a405. 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/QZTAY2208607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3eade028875200ba7e3b87ce88808769cba2740b0c551d9d6f2b28ca95630b5. 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/QZKDK2137225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5d36ea80657864deba2953afe588619dbb3fb8b0d6c72dfa7677dc0167b6c7. 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/QZDA62157306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda6725924ec6e1d6aae92a7fad441029a577af1327eb270aa805eb9d94315f9. 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/QZMHM2038159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e0a5e43a74baf41250585208db12463a858f82577bfd8dc1950761be31468b. 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/QZ93L2040000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b10b0c6883b8a00dce888259a1d08382ac28308219ff4ee4d814a44cc3f8b5c. 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/QZ93L2044847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f68cd58f89299fda8a190ba6aa90e737039133341a9475837d6030040b9b7a. 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/QZMHN2086414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2f7d923ac1d35611c6fde7c4b9ce5705569de6bdb67b4a821cea7971298cb9. 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/QZMHN2073921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd3cfc316061b780044770d89389024825974cefa93483eadee8846f1958748. 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/QZHNA1995158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d88be8c8f5a142cee0db4047d3ca000f24f12488d9a66545eae9e51a138f33. 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/QZHNA1961035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f9e653069c8d7b3d0bc7ff27c065ae66da6d34a20866a2a30e06c9de0d7939. 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/QZDA61967399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636abf002d2c7f021f04003718dbce46ee22771c9f68ecf1aaf6ea94784907bf. 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/GBKPL1809915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805057d6ec33e354e36c994d4431b5747b51269f01eb431a991c26437decdb89. 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/QZDA61967400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaca3bab61ca9762499db9011037637ba0b4ecf8228620f4fcdb49714d6c665f. 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/QM24S1821179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1e24cb8e6df7743898652371a4e4795680890fac60326e286303b42c7bfd9d. 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/QM2PV1709885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418733acba52c908d0b14c970fa04a2ffc0e6a8c93410e1c1dd00d62aa5ed38d. 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/QZ4JJ1782099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418733acba52c908d0b14c970fa04a2ffc0e6a8c93410e1c1dd00d62aa5ed38d. 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/QZ4JJ1782099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da0add34711f309cafccb2bb696ae6e0666509b5cf2bbaa9474a92e3cf74930. 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/QZPEW2445478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff916b882a23d2dd3271e433450431aeffcf548155fb2632af43e9d25f1efc68. 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/QZVEM2395661.