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 0xda14f86e6239460eac47ca2227ad36bd88a1faf11563cea99b8cf4c65f459cb8. 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/d7afe516-fde8-40f7-905d-4726c589333c.json and https://artists.proofprofile.net/proofs/artist/d7afe516-fde8-40f7-905d-4726c589333c.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 0x91612e3b1b6783d4add47b5c116897c82f153834078eba5f1649660c75268c07. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NLV5Q2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad47808eb321cd8b054121a20c8a4d0f0eb8d3db124f6485d47cf067c8715c6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLV5Q2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70225f1a457fd6a9216a97231592b8fc45c696a41534aa3ea510bea6d4fcb39. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:45Z), 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/NLV5Q2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c8256ba7d4f5cdf560072bfc941a2d5730ea18fbda9ccb7d2b0f29dcbad390. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/NLV5Q2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d29428a86a7d13de01c6680256702e8b2ce2b462121737d70e939a1ffb3118c. 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/NLV5Q2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4a58062d7a184d9868036de9bac4d0e06cfbfc77bc8d74aec268c792f25e56. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:02Z), 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/NLV5Q2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a647542eb23a99c629f59c7bdac0615ba2c7864294c22fdc79fe875ff6a928. 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/QZMEQ2201190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072d8725e3aa07851d5b9e766724ac53a5b0eefe99343249dc1387c331c607bc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLV5Q2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5802d0875f2c57426be340880aa755127eaa6988e272eb53d911330d0e74a974. 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/NLV5Q2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f6f8ef72a9350cd4bbf12ce8bdb2aed3fe38286af52590d3892e4d65fe97f0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:22:47Z), 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/NLV5Q2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07522a9c496870cd615667c0cee22aa9a32b1fc19ba2a4be5c92c4ea4d1c4f4b. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/NLV5Q2300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f24cf8d66683329dabcbc5adc6a9364e78005d857819355ff13584988770fd. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/NLV5Q2300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c1e75a802a5488896f0ecacc0325cf2748db6bb3c9b59e2583d0a4d0755bca. 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/NLV5Q2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc46d7bb32a9d533ee45858e1077177ffacf7f97621d84eced134854e601662a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLV5Q2300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f24cf8d66683329dabcbc5adc6a9364e78005d857819355ff13584988770fd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/NLV5Q2300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5802d0875f2c57426be340880aa755127eaa6988e272eb53d911330d0e74a974. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLV5Q2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07522a9c496870cd615667c0cee22aa9a32b1fc19ba2a4be5c92c4ea4d1c4f4b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NLV5Q2300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e53340d8365379f7a915873847ef178b4bda5389d7a3b2c1279d9d77a45a8b. 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/NLV5Q2300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a46b98b6b0c65c22bd105f5dc48c9b86ea2764c4f032ad0dbb11fad1b84f86a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:35:12Z), 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/NLV5Q2300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0b29c12087f575fe2669dd44a878e894489255969b12068081f0c9ba44d7bb. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:02:02Z), 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/NLV5Q2300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad089d3a4b7650f9cd4c514aecc693f0c900dccc6dd87a52bf18fd8faf95f80. 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/CH6542461382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de752f46eb44cfb393ab9a887dc20b1607b7570475dbe566c615a10e1324177. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CH6542466974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c96d12b4231d2c3fc4f05ec787b5cbdfc5d8eb49c07b94e0a36c282a741f69. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CH6542475449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e68e8355a9c706430637d2e02fd425fe932cf1f908bf86ec828728cd705951. 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/NLV5Q2400024.