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 0x3890acbee2592beb23e85384ec9f8744d293f72e8116a860c2260403ee73c13c. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d3869a5-bcda-4140-8369-2c2901c08913.json and https://artists.proofprofile.net/proofs/artist/1d3869a5-bcda-4140-8369-2c2901c08913.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 0x75d09e19ed5eed73dab432eb999dd4339fef8bebbb8e00b4b6446615710d9691. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/VNA0F1725181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f08a35d4636d7c6b9963362ee682170d51bc3cf38caa54a105e8effeeb1558f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/VNA0F1725184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6945b53fdcd6694a26ece02f0d61fac700a3b21063af461280867b4733c23e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/VNA0F1725189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f6a6f0d15f3747c5b6bc8a8605ba102618242d55ff89e174aadc724c98d96e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/VNA0F1725195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17005bcf94815b7244cb645a14511c53ff33444dc59a629c696fbcd9559e02e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/VNA0F1725183.
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 0x567977b288c6840d88497999c7c510663142ed05eb8f2f7cbd4e2d05a7bb3275. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VNA0F1725125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adb48e782da0249ecf2953a2c4faa9fe580981ab28662b64f889f284559d3cb. 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/VNA0F1725127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9326cf0635edab3367efe358da8d065f0cf1c02a7744848153c312e8ca5e091. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/VNA0F1725128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6331ee929cf41046417d1bdeead1d82d43466006552bd01f3e934368a2f33907. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/VNA0F1725129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763d0ea2cf7155d9a1fe6fd6b1fdf7ff8a13e1c9f1ad6a879731fb6585f8ff62. 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/VNA0F1725130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b832dc9868d183c7c1f485b4243a8ee379dbfcbb1347ec34f41d6e7f158f4e5. 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/VNA0F1725131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6090d41f7926c7cf19a85860913af53fc7b2e2fa1df142997ec33ed10c260c9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/VNA0F1725132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b79c3cfd6705bb197f2c2011491d142cca60aa0ef2c781860751c7e9676f5b. 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/VNA0F1725133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b45933918310ab5ea14bd1f7eb363b8a3a54d0e8cf4b73b54d59c25e3d7beb3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/VNA0F1725134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1afd5b54216360c45e25e8a2a0f9babfa18033f7f7abe0abd1b05796bc99127. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/VNA0F1725126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad368503685cf52bd938ca6f207ccfac68bff3e9abaa9dc02ca88a01a924aa1. 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/VNA0F1725060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943d5dffe67712b24227b3b0f87a66f4a41dabd98a418a7a1338a83b0e5c3b83. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/VNA0F1725062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424036bdceb7d12aec3a271c9bbea7415db43f10472b72c91e3354e1c1304021. 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/VNA0F1725064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276b468fd3698bdc94da14e69058e3fc3e5f0f9c015f7176b690ac5a600d3a1d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/VNA0F1725205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa554bbace76b92b71a6310cb55d925e7ab9a638861ddb2c792cba183d12fbfd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/VNA0F1725206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b36af8de4f8d940c8bd0244eced7fe55695c4fd5eff4a0465becfa62d20a894. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/VNA0F1725207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556eb63a18ec0d5f2170c5fdcd28775aaca1c5d2debfc86c17b4272535cf1351. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/VNA0F1725209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023e2d0842977e8f3afbf90718cdd288b1327d9ac0554ea1d812cfe31ca62015. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/VNA0F1725210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3942d550a4b7ab1db325af683bfbee48901815e4dbbe90dc2921c2cf895ede. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/VNA0F1725211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b495b150ce075d345890c660678cc9b06e67b765aeeeff7345fded567dde8ca. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/VNA0F1725213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d723deb0a4cfe6a8430ca9ccf1908b2b19663509cd8e93ab5d5401c56f002c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/VNA0F1725219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75667fc542abf0d4a155523930ae64230ca6ed8a097b4f8cb3fac6093551bb8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/VNA0F1725220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edee72cf89a827ce40430c855bf984b1c053b26a148fee5f198a5f55d130525. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/VNA0F1725223.
Variations On (Ah Vons Diraije Maman), theme, Var.7, Var.9, K265 300c
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745b045eca4d88f67347a1648d552d1de8fd5efa3439054e8286edfd3ccea380. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/VNA0F1725225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b79c3df0f76375724a69ff89314db29558b1b2eff9a06efc3c7b97e748902ba. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/VNA0F1725590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9688127fc6161bd1beaa53236b420034672b14e7f2243e8e8362e57ef26c0b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/VNA0F1725589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb243248b6282a1f19306fa4b60a3c68b42ce64368efcfeb80b06a454918d6d. 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/VNA0F1725552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044832a48d31ba06583052a45f36cdec4873791d3a7dfbd7112e9b4a98381bf1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/VNA0F1725559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a54bfe9e90b721360f2af2e8c7b153a3a189422d55afe8de2886aad4d082fc. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/VNA0F1725555.