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 0xe3233682f5af8247fbb39a28ed95eef6f6a59685a3d8252c97fb370609e47190. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/903b803c-f546-498b-bb69-f703ef382edd.json and https://artists.proofprofile.net/proofs/artist/903b803c-f546-498b-bb69-f703ef382edd.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 0x91ab04b9300a8f448f1d8894b6e406b7dbb83671581ab1f321c9e4988eaac144. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:11Z), 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/RUUM72000269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bf842dcbbd4162227ee7567d602fc368f7a5f199cf8ac95c1a12e20a9be06e. 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/RUUM72000273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29633f89621347e61f24d26b72c6383ea7a44a2aca322d2b17c97523b7d1982c. 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/RUUM72000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ab04b9300a8f448f1d8894b6e406b7dbb83671581ab1f321c9e4988eaac144. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/RUUM72000269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bf842dcbbd4162227ee7567d602fc368f7a5f199cf8ac95c1a12e20a9be06e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUUM72000273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3a53a7300d469bd62680cba41a805386750da0ea8f3faded36375077a55e6d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUUM72000277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55eac4af9855aa684f60fe70edf0dc8abc9733425fa153e78d4c1c282b6026e3. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:50:40Z), 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/QM4TX2123285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5635d82734f99337d5db9621f29dcb24671d81aab6e72c9601ea5e0fa71ec642. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QM6MZ2116803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05796842428c20f7167fce28cee8774e44a9ae286f59ddaef33b27b1ed1d810e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6MZ2116804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b659d5b9cefce2306ebaaaee2fd9046d0e06b82ffab50a430ed6635324c904. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QM6MZ2116806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3a5f754970722f18e072e7a63ea2bbadd30b459fa21260344e72680640c19a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:51:53Z), 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/QM6MZ2116808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5635d82734f99337d5db9621f29dcb24671d81aab6e72c9601ea5e0fa71ec642. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QM6MZ2116803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebb4bbba7f216b3d4de030ac07cf95c00501f99c0f4d51723921e1d3b5cb188. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:02:11Z), 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/QM6MZ2116805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcabcefeddfb374ae8adfb02926e315544e3c70701953cbdd7e3c16f572d762. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6MZ2116809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e50a2ebaf27067068c282cd444a8c11018a1cd9341240a6927598313908769. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM6MZ2116812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09017f2e32837afc4d31423f3a03c57c25b09df0993629e4cc7448cf06d8ab1a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMFMF2118242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09017f2e32837afc4d31423f3a03c57c25b09df0993629e4cc7448cf06d8ab1a. 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/QMFMF2118242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a737c897775f135737d26586708de40bbf52b41ccf5e4bca2717af7bdbb829. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJV2222586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3edd18da9ff18707eead8f399824ea51f7b433028eb46d92d7f30ff9156cf8e. 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/DGA082233261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3774f758ee0fc6aeb3c3ed3aab8d59495e8a8b1b1435111eb8d917ed8954f678. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:05:38Z), 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/QZGLS2322895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87417873490e499ba089c38e886291ae0a05e211834083478df736c627a50691. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZL5N2321994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe955a03f0d6197d4836cbf154782975de9e3ed564d92c39e7a1ad81c392d4c79. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:51:30Z), 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/QZL5N2321995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6379002e0bc77c212bae517a4536284c1abde041e57e8da1041ab20689574f1. 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/QZL5N2321999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5102e32380e9d07af3b300fe86be0bc888dacec94e40327da21d0ad1b528ab3c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZL5N2322003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87417873490e499ba089c38e886291ae0a05e211834083478df736c627a50691. 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/QZL5N2321994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5102e32380e9d07af3b300fe86be0bc888dacec94e40327da21d0ad1b528ab3c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:11Z), 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/QZL5N2322003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeb9194052881f5a4fb10e295b78fa1ac1c343124526374a1471f6f2aa65316. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZL5N2326708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f1371209f0799a8e36f158b83189598c9171dd7b6ce8f251ee4c554c9a8ed6. 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/QZL5N2330386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0807351fe2c07e45ea2b8138029003631d8d153ccde52fc0291e138aad0c7034. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZL5N2435283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308aff155144c969120cef6067a09a3fe9f6c58668a92057fec621afbf3953e6. 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/RUA1D2245624.