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 0x512188368f4ef6c1c0badb50984647ae9577feb3fae4f6cf28f81f80546cf318. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4184230d-d356-43d1-85cd-c847db3c693e.json and https://artists.proofprofile.net/proofs/artist/4184230d-d356-43d1-85cd-c847db3c693e.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 0x32a1c7c2402449b91e11c180643d99ab452d470c6dec34ab81acff0cba345416. 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/AUMEV2442486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993b9ffa08b92166592afa03b9171d59ceb1d467f1c0ed2a1023f5e66ad55f68. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUMEV2442508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd27cff813455f56f37fea023a01d117645c34fa3c8d2069ff5d7722c50e28f2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AUMEV2437015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473f1aaa945355e25ed93d875d493b16cb3fcccb0131ef8d6476d649be8cf061. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/AUMEV2442490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767b5b43fefb5cd7107728561e9cf77981b688d63335a070c17745fa948afd47. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/AUMEV2442497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1151847199149a17f2dbaf4d141056f91ff9dfc820e04b386ed624710b1d5d. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/AUMEV2442504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9cad80bc66f44bd41db5ad4e9564b9b1d9515e02bb59953881c6ba9d67628d. 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/QZN882414148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea595be2b3b35f9bfdc0ca537192e4ea861bc89bd77b4281c928e5abbb870d3. 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/QZN882414149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14b3c145b9c8c1fd0e739a4107b7473592f903dcce8f89b4da5f7e1976d8ab7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZN882409078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523148ac5d5178aab7761df2b0a870dad28bf104badbcec630a2a22e26ae5217. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZN882409080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbfad42cbd2c805fa34e3603f8b1b49e9a2da4263a46563c96a2bed58dbdf9a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZN882409079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade601e32b38202611a3807713b36568340bacd8fac0faee91109556bdfa6312. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZN882409081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e2095791a2b33c214e6d9875e0e569b842e1ea5f4f3a7af7c98ad7af770cfd. 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/QZN882409083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9cad80bc66f44bd41db5ad4e9564b9b1d9515e02bb59953881c6ba9d67628d. 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/QZN882414148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf24f569bd0ed00fb30d42f825bae4c8f402e28fd46fe126413bf021ffc57ed. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZWDW2493487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd661d30c318f2dfb47b9ec3d8850a094ea4460185607042e90a77c9f6a15fc8. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QZN882438535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54af5bbfc658ff9da09dc9b0d58fd24594908249c0663d8efb7b49869b06894c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZN882438536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f17c5eef941153e0fa499c20a8bb190c08f7b05e927458ffb0fb1b0a2de56d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWDW2569804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0d0d20895a6ce897ef3c43c1926f1e8883d2d3ec9f3a02db27ceb1085fa64f. 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/QZWDW2569805.