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 0x2592e6e2efc64d553cc25b6e24985a82871761a6070e206e5fb528c798b646e2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdbb5fe5-3725-4e13-b6e7-c147bdae591b.json and https://artists.proofprofile.net/proofs/artist/fdbb5fe5-3725-4e13-b6e7-c147bdae591b.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 0xa53c5720f4fbfca55d9337846a089e9be76fa23914fc49e636c36abb85bf136f. 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/TCAIO2446965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5908bf6a5356385df98445c8ef37f9fb689a400ea116d371e89a4c2034be0dfa. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAIP2446980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa389250f432922e72e3f1e5c8f585a0f3955fe07eca402eefca3571c29d96dc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIO2447006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854604fe33875ddce34ec25185fc5a8bb01b835b3abfac12455db20ddaca13f4. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAIO2447012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2ae3cf6c7a8eb4f8a9f4319c963710352b3c86237cba1aab30936c32163a9d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAIP2447022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ec27aa8f85ccbc76c1f049b7206a9a34bc4f470ac25de3eb49a085492e6958. 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/TCAIP2450791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b42bdf5066458c18fa8a305de4d4b58470e95a2e32de8f9425f4faa3d30856. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:00:21Z), 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/TCAIO2450793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d8c0ac0fa8e4eda11f6a0c16da87efec5adc31b6f13249f82b87ff465f5ed5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIP2450800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd403ff2eb7f8544d4346b1ab79dfd86570723b668142e2e6b8dd518d4a5bd29. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:44:54Z), 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/TCAIP2443691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20817bf7a6ff6cbfc720c04c76c698970abefd1e64bfb8f3d5e633e46491ef9. 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/TCAIP2443708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cf96a9cbb220b6ad07ba6da0e4a83099b1e3c5ddb6a8ee50be7f9b1983a097. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:46Z), 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/TCAIO2443711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8176db66ac4eb42527905d134ab51247957b0ab979dc1a04fe1da91895e2e760. 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/TCAIP2443714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5841856ac8c6462597c821f1a40282d5536e027f402f2389cb641e1ed421225d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:28:31Z), 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/TCAIO2443718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461b476adb8e3035599d82226761ae218c67c2a0d271fa4c673ae3d8683bd52c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAIO2443725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa717ff6970e5932ad5cdba1305f3c3c9f32243b3969c4e1457d221d06f4f22c0. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T05:03:48Z), 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/TCAIO2443729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4196a7db3eaf74cea889b6d6c973398d8eea6fa2d7b0843588a3030a873371b9. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:27:21Z), 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/TCAIO2456200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f99b47128a7c3077c53cd95ac005f2ce0bd88d047c0c98fc068227b6bb0047a. 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/TCAIP2456296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb558a1be419a80dec00000f096a0b62226a3be523fcd4fad3c8ac211bf14e537. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:06:38Z), 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/TCAIO2456305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ef0dc2a40fb72d8982388d54aeaf5ffa8ab92fc3590d633210d1f29fdb53f0. 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/TCAIP2456352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a44ebeaa3dbca34d7c47444fab26bf7c1f584550f3a446bda4f7f4a023abec. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAIO2447884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ab2560d0bd45d04764a62367104a80a085d11e01575a586298e4fa5fd8d444. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAIO2447900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ec262684639f4655b9ae2e9c7a84ae60d8bc26c342c5da5d1b1ff923b656f0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:56:55Z), 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/TCAIP2447903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4097895c00c8e12a5b35c0aa1c628e6b41521990e77efb847c14170acef1d6c. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCAIO2447908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9839eb195c89371628a9c08335cb2aad6e95e9ea618006622bc85a9d7d4d52e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAIO2447912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321629a9a21f873af2f6ca1c197aba41fde056f4a7469331403d5dc14f3b43d4. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:21:31Z), 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/TCAIP2447916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97b76ed05b21c259d239b77ce77840c9294f85f7965f3c713293f82883e3df8. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/TCAIP2450866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ac7491dcf40bb1ae36d0a7aec579a9f077697205da9e5a1b17237f0f207f75. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAIP2450872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf715dd9080363462b97320214e53792bc920d6788f71bf99b94ff1468412db0. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAIO2450873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad257ce70fd8a88a81cc0747083e1f9ea2c3ba57c144284a7ed73dd49ca2641. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:14Z), 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/TCAIO2450880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaf0af2164d216b689dd710dba0f1183c0546585c9b76724b7f6e0ea0f1d759. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAIP2450882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b00378b3794da8c5a97c1106e361f2cdeea4458e6dda508206d8df6905fe70. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAGY2398633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4b1dfe0d4c306d7a563171838a8fb20f8b0e67df4ce5c56196c6120a684eef. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:03:08Z), 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/TCAGY2398636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cc4d87a8079490f97d8074d1b315fb1d7b92b8f6c3dc49b691f3dbb6a0ec77. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAGY2398640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7539531feb67609838690c8d98d88ce0819f712c9bb7269b2749555b0814cb. 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/TCAGY2398652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9c80153610645d8d7ab6c98e6872535814890b3304aa9dbe948067e7e9717a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:22:11Z), 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/TCAGY2398656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0580719c5621b49c6696bf7f56c61d550e53e3d34be0b026f2288d4e2ec1a118. 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/TCAGY2398674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d72ae7d6bb8eb550c1967a454f868a6fdc841d0874375a3c519a7de06a07d68. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAGY2398677.