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 0x0c4699838855461130ccf27edf65c57b4ce4a0777f70712882d76c715272d448. 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/38f085f3-f1de-40d2-b853-f7039218cd51.json and https://artists.proofprofile.net/proofs/artist/38f085f3-f1de-40d2-b853-f7039218cd51.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 0x9b8dd9a606b4c8be2617ca443c6dffbfcae1eeaefc40ff589426c288a1224aeb. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZHN42426079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274be70757176bf77ed322f35ca377f637385bd089b832c14d62b4b630668554. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZHN72454864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2755508b14ae134f80434d156ce181a8993571e773ec5d776fd739719bb08bfb. 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/QZK6F2440761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ccdc0fbb865addce0209b8e3eb323387df7db4b57252bd5e545a23c0c22674. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZNWU2485806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a92d8988ea1b2711240696188910ee49a049e31f6d8a7becd34c9c2722b2cd4. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZPLR2439303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557a4af0c896b9355067567b5ddc654a708e9241b32babf0c8804e2493c16f71. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZTAW2490083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40bcad7a371cb6f5b044f3c975062b3563f0a28941f0f1cb27e8613dbfa1a69. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZTAW2490085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bf6261ac59b4218cd6232de650d7413b59ead96dc1c9b5622b3edb93ac2f00. 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/QZWFL2465069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26417d98cd8812416104b7969e65e3da6b705ed9b39af0f04392865af42cedf7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZWFL2465070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905d0b1a76811227a98ae9e84550a88a4e4a145971c4c0867bf3a52dd3531ac4. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZK6N2508374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3803147da72d2add7ef5d74233392d24930be4c3760c674d06e24457b9b4e35. 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/QZK6N2508375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2e195351ef1ff1fbf6775ffa55576f4c75c05b808c9675f3e44f878000db53. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZNWU2566075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857e25479031bec3adc11f2fb632b13a476e6a2761efd9049954365cab04b1b8. 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/QZTB62522923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426b663fea569d10861b4a8bb236c2df6e0db82f28f8cdad284f512f5aa8cf09. 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/QZWFP2558694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fddc295b49945e294e0e90fcb3052b3fa2b29ca4b881d29e12ee519446661b5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFP2561239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb2bbf43b150a5ce236096d2eaa5000d63910e6574eaeb6b771a67c95c09803. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWFQ2508270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3202e92ea07b4241226e87234debc7e28c2821baa2a385cc81a63e233d0e64. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZWFQ2508271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec420c728f93a5cc3c85b60504d818a198b1054a9cce44a190f6a881e89e1a4d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFP2558693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c84a24f124f3a25680d5632d66ee0e5ddd17b5c5f41c8d7dec8bd1a63a7ab90. 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/QZWFP2561238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132d4037cc18f1434275be4ba988782c6cb887cf800c73c774dba84fe98a14e2. 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/QZWFQ2508272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e1ada5c5dcdaa74a5bac5db03cf910a2863c0ad091d3e0bd7e59411a330800. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:41:18Z), 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/QZTAY2358170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5ec9bfc92d067fc355761ac9f692a142f8a4f0029cd8ef4539d662c0b979c8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZ7U2520979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274be70757176bf77ed322f35ca377f637385bd089b832c14d62b4b630668554. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZHN72454864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c78beb218f60ad7e859f0a57de0e71b4e942e09fddfb65616f3bf7baf61f99. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:41:44Z), 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/QT3EY2510310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59b868e4744fd4470735012f7abc15c07eceadec87f521620c15b062c2d03f3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX452472564.