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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09f8c184ab63bec191e80a379a46e048b325461b0dbb3a46bff44668eafb7bb. 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/0bf87086-98ff-4595-95d7-f86451a9e268.json and https://artists.proofprofile.net/proofs/artist/0bf87086-98ff-4595-95d7-f86451a9e268.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107d273f896ea1e3bfae6b4112b21d8a8e1eb847f5fbed7ea7ffa4c5cace03ac. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZTB52450053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a03766a0a2b021615fe7f7c1bc7af8ef50bd842f51696ef4f8874bb201db1b4. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZTB52450055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c7be64608cd93f48efdfb09b542703e1385f04d93765ec7444dcbe48b56d98. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZTB52450057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0c9613f78ea909351ec0b06e319559eee0d8ecfd3a0c7b03c840c1dc78b77e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZTB52450058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb670388f9e811d791db94c454e8ca0d8ccf6358301fd6f6fffcd81740f5ecede. 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/QZTB52450059.
I am the Weapon (Fighter Epic Metal Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ec574467bdb683d9c5e11f89f7acdf85f9179c791c68478f29d6b29f883871. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFK2429867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306c16ebd6c9429a2ba991d8a44053ac0a5b44bb0edf9bab65507cde62901194. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFK2429869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8facda034e62682ed9d73b6b6588f76ae40dc1f128fc779678df814c9bb06786. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFK2429870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4983e35e56315bb33fac3d73a30be6e1b6939907be6bc8ec9d144a303f7a75d2. 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/QZWFK2429871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fb081b29235ede8c44f0ea9542921242541dc2cfeeb244aaf85109d7a2d4a7. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZWFK2429872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13abd0086547e4dd9ac95235d88be9f1d4adf6ca8648bd8875768af098138783. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWFK2429873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a30012675d38dfeb3d494fddc0fa94bc43b1d2c0114b9870eaa7448c03dd35. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZWFK2429875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8186f6bafe26c709ce02b48f3aea7759ee839e6b6ca8b0f0ee906538adfdc506. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZWFK2429876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057e341384844634a61cacf81b9c6c45ad2f8170b32b54f41cddef4f9c0f2ef6. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZWFK2429877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f848549a3877e2cd06805cdda2b5fd070f7f35a0d3df5fefdd234789059354. 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/QZZ7P2490331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79217c5fce675dd6d7eec1387e538819a9acea966464a8e971fdd7e17700757. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZZ7P2490332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7032417c1404159e7522903266e0fabeda9eb4863597b9fc400e2bedf07740f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7P2490333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904de361db449941a1992f062d2865f11086186e73c2de81b67d25e69ddcf87d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7P2490334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fcc87cee93ed0a04a753a4d0ce47838d3ed898062b86f449519431183ff9eb. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZZ7P2490335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d278bde6948a77a4aa5c9179f7d9ee22fd6558b104f7a2c9c59a4069e403c2c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7P2490336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20082fac1402fca34a3e54116caf79ee0e064fd7e5662cc65a2429ac218284c3. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZZ7P2490338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319fc0ad26ee589880aeffe3ec153f00b95a18f9a5b89718fd6f6480105f85cf. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZZ7P2490339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0060bcbdefebf02b5e0d4fb439ffa66edc53dfd78819819b61259c4b57ccbf39. 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/QZZ7P2490340.
I Would Like to Rage - Medieval/Viking Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411e4b043ed3b8f1ab14a7f7f7c3053502b7fb4ead653f7aef06f3d4419c5ca1. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QZZ7P2490341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adf98263a3227035e9c66dde3f50ee6091c6f3df2be6ba1acd1b25330004cd8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZZ7P2410333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112e055a4372c27b7791453cf3fe29bfdd7363220ad0a74dadd47babb4129991. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZZ7P2410334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe127977f5d1b649df260bcb7c900fdd1e949e5479aa325af20c1ed6a0e4b83f5. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZZ7P2410335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee31e3bb1293268f29cfb6a42c66522f30e83edea9610e9cb6af8d9df17f5cb. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZZ7P2410336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c7d0cf42eae1a20260caba9caf1157472649e54c300abc4a978c5d5351115c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7P2410337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cdf6429ee31c69d91341d3851ad953a01d0a52b0d67215214988207c94b227. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZZ7P2410338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14baf3a7517951d78cee041fc26ed02c32efa5ea5cf4950179bd99e9741b1d9. 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/QZZ7P2410339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a7ce5b323f06c932f7c6e320a03dd3f71b29261291704040554427f776d762. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZZ7P2410341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17285df8201a36fa588a8fdd8453ed5963bd98e871d7309c46a5458e86560e3a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZDA62578661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b4e95bab72ea8329d975a57a901149cab29fab7da95e84d4caa3bb038dd3a6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZDA62578662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212ddd2618f1e6171473405bfc1db771868176aca82a3af8ca88206a3862a6a5. 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/QZDA62578664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cedaa20afc700ee4bd5b2f0dca1bb2f97cbb03858c415a387ba3e56632a78d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZDA62578665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549c840af9d5a29514a953da12f03631d53479a329f488e9ea16424afdd399f8. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZDA62578667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb855c8e2f3721ae7553acb8a93bbaad27b689991758daefa11237efa78b6ca17. 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/QZMER2566433.