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 0x31db7f1d69b9aff4973bfa1ba45c8d0006d2f391e93e9de6160bc5371b870648. 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/fead48fb-10f5-44eb-acc8-29276397b727.json and https://artists.proofprofile.net/proofs/artist/fead48fb-10f5-44eb-acc8-29276397b727.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 0xfbe7e794625d9b906090e74b60d9a175242b3a3e8123f0f436d66136623a770a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZ972355232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46e83d39a0761749a8bd2a372aac79a55e09b361172f35126e7d45a9aa20480. 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/CHF032259220.
Tomar Moner Anginay (তোমার মনের আঙ্গিনায় বাংলা নতুন গান)
Tui Sharthopor (তুই স্বার্থপর বাংলা নতুন কষ্টের গান)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7aea251be77050133c0411526095adc8357b3802226c9a88025d9722ba4a16. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/CHF032260341.
Akash Ta Kapchilo Ken (আকাশটা কাঁপছিল কেন ফোক গান)
Sokhi Ghumai kemon Kore (সখি ঘুমায় কেমন করে কষ্টের গান)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762f9fb902eb6451e6d04346544885f7b559e9be4b047c648fbccf38f22a17fc. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/CHF032260343.
Ki Diya Mon Karila (কি দিয়া মন কারিলা বাংলা নতুন গান ফোক মাসুপ)
ICC T20 WORLD CUP ANTHEM - MADE IN BANGLADESH
Mon Pete Chay Tomake (মন পেতে চায় তোমাকে প্রথম প্রেমের গান)
Mon Tori Dilo Pari (মন তরী দিলো পাড়ি নতুন প্রেমের গান)
Mon Shudhu Tor Jonno (মন শুধু তোর জন্য নতুন কষ্টের গান )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf62fbf701f1f08bb623343eb79931bc3b207e5883ac0ef08d6a6960b2b09e15. 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/CHF032263085.
বন্ধুরে কই পাবো সখি গো (Bondhure Koi Pabo shokhi go)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769cca98a0062df200e20b7e1846bc741869fdb43a9ed5d22fa1191824cfc1e3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAGZ2389232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe7e794625d9b906090e74b60d9a175242b3a3e8123f0f436d66136623a770a. 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/QZZ972355232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6303ec5c39278b6246e1971799b1be64ef79e71a31eeb523d8b2b1875b318d. 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/CHF032403817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01b55bb8e09d758e76498d4eebd8b21077c90b4799c98ac04288328329634c2. 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/CHF032400539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcc656972daf0bc5d3e1eb2bebb2a3471b27c26f79bb3078f3587316d30ef35. 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/CHF032400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea404201172d9cc5c63dcd48bea135f065dd39073897de3739602db68a250725. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/CHF032402330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb07eae46f3879422ade41368fe0ff02060b9be5551587c01bfa72739029955. 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/CHF032402403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc225f09088279e07a52560087f0b6431b55b0f324fe67c4963bb4c31727d7080. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/CHF032402739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4f23b21e27a356ca720bb2611c6a5f4ee6cbe4756b193961166a2ec4879b69. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/CHF032403073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985ffe164410ac7b4dd7287a935333e6d7ffc353f2c004e35f48393a5ca4e0d1. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/CHF032403352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd3d8769ff5e68acb808d0ac3ba1100ff631745b9e5ad5d29b825240bc7f7ab. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAHE2324516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6f6a595957cb485ecbe3cbb576edac40ae7153950a0a816b70664cedf72d77. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/CHF032403788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6303ec5c39278b6246e1971799b1be64ef79e71a31eeb523d8b2b1875b318d. 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/CHF032403817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a6e0af67aa0063f080a7b8f362458c8679dfbe11b6477372d124d33cecb1f9. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/CHF032403814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba1214fc83a75a73e57d6c310152d29b59ff40f18ae760c9c1b4d09eea3da3e. 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/TCAHK2383260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096a574811154b14ab9091c5325f239fdda0f8bc3e8a69bb8a5b17d03c6055e5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZ972355231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5713034962868cfdab0cebc2689136812a47ba5feec38d658d28a86d440264dd. 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/QZZ972355233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0022763cc2a9e15f8e92c2ab49ddba621421600d4a2fa56b7737dc1798b755. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/TCAGN2218264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0374c46a3ec70008b437cb0a4e96dbf0cbc6d37be5eb0ec6f4ecb479da772cdb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAGW2381936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fbbc7f28ed4e57d7b10cacc3f92a71d416d30dbc88217ab48ecc2c836a051e. 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/QZZ972371379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee04584e08d0fd8b8a31e1655018319e6c8a9f1354817c2e1a0aac2b582fe83. 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/QZZ972371380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd046caeff3c79f256f0068ee1a12bfb0022a47cae839b4496548e7448f87688e. 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/TCAGY2303960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c80c4f71e53801bdb361ab21aa798aa36297b6dcff3651c5beb2d5648a02955. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ972371381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2bc1384a5be586deb1b3bbbc5ad7c0e0df8a2093cdfb3289fe1a7331772af9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAGZ2399912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e20e83c34da5af5707cf313598bc260a91253b34f227715cc3be2d2abb07a00. 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/TCAHB2309042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd4954b61d27dd58872dbf1701c33f039c4bc3f7da359944a3d8092d0300300. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/GBLLT2517517.