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 0xd07f7ab8c442a16f14fcfe07a831fbf37cd9bcc87c521db79c678ba7ed1d87a9. 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/264cb735-9c0a-439d-8c38-b44618e13323.json and https://artists.proofprofile.net/proofs/artist/264cb735-9c0a-439d-8c38-b44618e13323.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 0xdcc9f6767ae43fc9f180db0a0cdc792861021968d03d14d7a2778e162e3382ee. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:24:00Z), 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/BXNNO1400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66b91b6d3650c5d2522594f9587fdf9e41af805577032ba4b931bb11ce31983. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/BXNNO1400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe617f886d2ee440f3db5763885482636bb029cbe4ab064d1390b486da9eda801. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BXNNO1400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9082c56c9c8d08c4286c6412e2659e4b974f0d3674882ff2fbb60a0dbeb5a0. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/BXNNO1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c17895c2e3cbef394e32b669c141151755edccae9a98da23200ddce53f5626. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:02:54Z), 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/BXNNO1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95de3e66a5b27a6fcabddcd6b36c0e5d5b2c30cd1c4b7dea839318c5b920e3eb. 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/BXNNO1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce143f57454b3531d3429e3af74aa5d40df72ba936beb35853f0971c3427787e. 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/BXNNO1800006.
Eu Nada Temerei (feat. João Emilio) [Salmo 27]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718d1ec1aa30f1158827be29199500b8368fbb9942075fbef5b4fe105f114242. 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/BXNNO1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2708927255081cf64ac54c1066a8f4532dfee791bc36ecdb13838b5afffbdb6c. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BXNNO2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade9a8ccebbd0f18d93599cdb72a14d4a5fd24887eaabbe21609e1ae1c330752. 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/BXNNO2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818da6313cf8cda78bc0e6a972f215157a041356c235022d7cf598051d07a18b. 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/BXNNO2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42273f7d943d9bd354e04bf48cfe6e3a04b1102914286736de56657cf2f43c5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BXNNO2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc281ad4ccf7c1eb75b53681df0e07d2caa7abd768bfeb326446123aa3b64fbf2. 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/BC22M2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294acf9e3c7c51f48fc893cd7dd37e3521e8f8bdf0851bf10437b81d4d3d9d74. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/BC22M2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017cd27609ae4da786ef60c6c1007ade08dc7a2636c6c0c4ac9bdd8ef0def89e. 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/BXNNO2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a122ae621353d2b15a97c3957de40e3034fea46d3801554c7381e41ced7ff62. 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/BXNNO2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd09d1b2a6eda3c4ee97cde6a68f6f36245e6baa32ca95a4035837734fa80fc. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/BXNNO2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1778f0f6002bd8eb4229c582e1e83d5bf92e023a841fd2206afe696b6b9ed45b. 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/BXNNO2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce767775d228f16a6c1478d2d96151d988beaa57ce62613c6ca456c4ac0e9c1. 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/BXNNO2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3823f011d805984751b917a2dd8d2d239a24fe1a1c2c6948ad94455b6aa609ff. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:55Z), 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/QZTVM2430553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98b18e2fbaaff0a33d83d37f93bdece17d9489e386b3c18821a68e0c7975792. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:36:25Z), 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/QZTVM2430554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29cf787b1a70141145fa6b25fd037c8b0d0a2487e870e4d52a1f154150f0e54. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTVM2430555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7542c42e446aa8b6cc0ad29693228b8d67b2ea1316b5be2d6e4f61649f97f0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BXNNO2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf428985c2209a4a66d7dd3bec7892784c770fbe8e265c10b439ab343784f1091. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BXNNO2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd1d4c405bd42adabb9a3d72a8403981633030def1e6ea421ac10534eddaa9b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/BXNNO2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a04d2a054fe8bde860ff18538d6637821e419ed16807ade73761293c23c921. 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/BXNNO2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362e0acd9f28a66e991a4f03b9c5d2f083b261e9177ab172dd666c56d57c1e05. 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/QZDA52529217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aa5db521b7ad1c4d92255d31f05239f6735b1cbc341ca82848350fb56fe78e. 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/QZDA52529218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dc3055ec87492325e5a312199ea183143995dbc4aea29fdb9fd887efb90fac. 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/QZDA52529219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66288f932c916e1e221540ee49b3ba4930250490013e45aea39b53116d0fd6ac. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZDA52529221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf30082db15d9651ee93532885fe69e1a7a4edc58173945ccd635b0200bd8d0. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:58:22Z), 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/QZDA52529220.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch