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 0xebbfa3479a7a88dd81ef6108993a24c2245a127b766e21c1584c93a86801bc9b. 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/fb05afe7-1121-4316-af7c-d7ed5f697473.json and https://artists.proofprofile.net/proofs/artist/fb05afe7-1121-4316-af7c-d7ed5f697473.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
2.0 (Mousiki Apo Tin Parastasi Tou Dimitri Papaioannou)
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 0xcf864f0ba19dbe863e2cc184372987fd6ab2b930520f6004828fffeef889ccba. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:04:04Z), 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/GRLE10600700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e1ca34506d9b91829cc05bd9d143c3b427d60398036e4f6d93f5168b12ff77. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:41:07Z), 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/GRER10200182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed099be27d296955b8e20922c435346994e8dc51c8bc33aa26116c9fc23e2d5. 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/GRER10200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bed7929abc0657e436193b0a8803d5cde9ab1c75cb2e3ebc0769daf8f57275d. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GRER10400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c858ae8dc85ac016209a2a36d9cde94b88b4d92ab8d9696c1159581f16e0fc. 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/GRER10400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef9007dfe460fbc8eb67c351c335815ab0afe408e03e9631ba474c73ade4a6a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GRER10400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c858ae8dc85ac016209a2a36d9cde94b88b4d92ab8d9696c1159581f16e0fc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GRER10400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476186db6bd6a589cf848f084ea0593ebf9f259a5ff36e9d28c52e6a0d06dd6a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:07:30Z), 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/GRL010700546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe35bfada4477384864c15586efb0246a15dceee0ccc9f96c0ce245d5cf45a0. 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/GRUM71600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f23f292dde716812d1dbd1a752fa52dbdac4386f1725d7efbebab6e439f3292. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/GRUM71600070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4733285834bb1fd39df4ea971cbc614efcb8f9c7fa833646fc95c8137c792d6c. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:09:38Z), 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/GRUM71600072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90d5ff715f552a429534e9140b93c15085df6a6ff6a0431389b5c60d0dc43af. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:35:52Z), 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/DGA082248242.
Esperino Fos (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f33aa9867b2bc6f887856cd2e9faa849674f0a797efb3c8f2d223f99961f5cd. 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/FRX282439580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a76723273f94e271bf08b4a36da053892e9b2afaec7135ec971aa8cae13f8c. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:42:24Z), 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/FRX762458860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adb68823616824bc3c0f02f7df5c173e4baba8b87f7ee48a444f040db7a6ecd. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX762458862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7704229045b5e7258457098c50edc642f6ff6f5d1f3e665336e65853e12e27. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FRX762458863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ad8e663b6cbb8a0f2db4b65e5ac550e51e4458a1b67a04bf510ed947e50ef5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX762458865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689f0cbd7c5e87a5a75669212423784a0aaf00802bf4841d3137a51b7843c50a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX762458867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa50af2e8cb5b0b5010108479f3b25a6ac263c1167fab9b9f257cafca502589e. 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/FRX762458868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a72af57cc660c96cb3baad9610f94fcd38985b5b1aa7b5604cfd3ef6d895de2. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GRDMM2500573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fbb45e2f21202398c4c8c810eda1671f57ceac0099a38289e8821f2efe6301. 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/GRDMM2500574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161873d87c287c51d31dd5e0372760720d2537f255014007ac0bfe034b5043ef. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GRDMM2500575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d53ad789c655b795e96e49123dbcfee8a189f69aaf05ca61e296038d9a42cb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:17Z), 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/GRDMM2500576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba03013e190ac5f7039cc8f818af9400782219bc9287db81e6ea25693f436b14. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GRDMM2500577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe796b21f4629c6b0bc85718490eef41538d8bad4705276bdce0ab21bc5fc0286. 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/GRDMM2500579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0800c34e22e1ff550db8ad48898d44a91e16bcb35654351552f8af16a78b66. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:48:23Z), 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/GRDMM2500580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba4910090e47115e1e94cc7d1e53a1211c946e10e1356b2927570917b385017. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GRDMM2500581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf583f4825fb75229929103096d5308b1d3f89b90415d88332763327fb5103f51. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:11:49Z), 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/GRDMM2500582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9930717c9840f20628cc96597c7a5bfdb249798dade396cb7aeb0cb4f2f3cc. 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/GRDMM2500583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeab20d14b49be012e124ea3280516c8868c51aa8e108b9d76b434e1aee5bc02. 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/GRUN10100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb8f219503ccc780267bffd77749c1b741fa1eff78a7348ce29da091f5b4f54. 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/GRUN10100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d991d35543097123352ba2c93a496afe3c12cab14a77951e45189d2147e55b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GRUN10100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30266e9ac97dc5b773803c152ab4cb2b7b0b0aef294bd50c09a36708965d968c. 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/GRUN10100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aeb5cf417df2d02c069cac7cd83f88161f3d1b55f855c4e814766a09613c69e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GRUN10100090.
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