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 0xff584170dd938050a11ce47e2a0fd1804a80cc7274db1781bcf2aa7f4916a043. 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/e6f1ac8a-1914-4463-9bb5-5029397d6664.json and https://artists.proofprofile.net/proofs/artist/e6f1ac8a-1914-4463-9bb5-5029397d6664.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 0xdf25b714760ce10d06d5611f39cf30cfdd639749904148b46cbb09ce942d8a7f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GB8HK1201598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d12148550723a67f5850a55a419c431f5c5aeaeed777d398cb63969afcb695. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GB8HK1505282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41fce4281c55c7cd359768f9b8c99630e3e8e1e7b8f3243e0c846ed5bbc1c2f. 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/GB8HK1505283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38e74169a55fb0e5a8ce16a83bd6c333950d2d1c9373bda2235ec2e462af412. 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/GB8HK1505287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916b3e82a69f63a30e2395d4b3ded1d56ba73c2b54292fd0d97ae064143f224a. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:28:17Z), 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/GB8HK1505289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2475615455d5315dfb6600ffaeb51dba10da75db58261e1081d4f05bf680de29. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QM4TX1722224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f45193600976562b61215ce0c0f8b3544138006251dbb884ef42df7aeedf36. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QM4TX1722226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f3677e5f6a89995bccefd95ed84c38d0c603b442e28342022d29bf4d00a46b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM4TX1722230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d77f35fed2a5a381b6112abe22cd63d61e0aec7304d2daeba5a000b771550b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QM4TX1722232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b45b20c14927178ccfaf2c694de7d269a5c4ac2f758173fc1337cb952391ef2. 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/ES8242026203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe969f09b25ccb57c632434c70717750647cc1d8e3d3107947799e9bf4edb682d. 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/ES8242026201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb7e6f973dbac4150a64e9f22a9ff9931d4bc8ffa3d65c2695a369b96839fa7. 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/ES8242026202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b45b20c14927178ccfaf2c694de7d269a5c4ac2f758173fc1337cb952391ef2. 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/ES8242026203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0719f23e62deb667ccf45c8bfee2e293bdfe94c6c808f16e257c58e1c87dad67. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES8242026204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299804f9e723de7d2e81d3f6eec555d48b595732b00b845298ee4d414d3b1a49. 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/ES8242026205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95fe24659a95000c26066a57e77d04f7826c42d556b272710fd5604e843f99d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES8242026206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b1d02955bdfef7524f0d81ccdfaa2f7ca76966dd5f8227790d9685435c40a3. 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/ES8242026207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e2fbdec783cf144c7c3d5a65e2a55b78aa81f3e0cdba56384a1c9fd806182d. 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/ES8242026210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6982aac76819845de7fb13fca06eaa469987af319c19a58448edf85840aea8. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:05:27Z), 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/ES8242443802.