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 0x31af56c3ad8073c3abf274033fbb714d718506faedf1dc198897ad14e675068b. 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/d478b671-3ba9-4adf-b54b-112b2de8abe1.json and https://artists.proofprofile.net/proofs/artist/d478b671-3ba9-4adf-b54b-112b2de8abe1.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 0x19ce4f15d569e1c3882d8a2cdbc201f474889862efb52f896b545a270c950340. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/TCAEK1985373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda7484c72328ffd4fd769ff20dde51c93a38f583750f27be3c46aa810f2636c. 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/TCAEM1951823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0c7990e866a1ee95b514fbe050d2abfc30dda40e36c085ef9de86814d42d3a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAER2013502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5fdc4748bcb3f2caa6dd151f7674e85c42819f9c81b7e4c7d9710cc4a2cf5a. 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/BEUM72000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700852f349e5f11778373968a78c26f2269b77b5b5840dabf05bfa4f79524a2c. 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/BEUM72000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355242d1b9d1776abf87f320a1646940707a31bb96c188d6a891a9d0f1d33c96. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/NLG662000909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa7ff4a21b3c2b1ef9676481dccfe5db368451ae35302589c0c0e268416c6cd. 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/BEUM72000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d20b864770217dfafca68c73d1edae5c413ca35b36827e09a49bbaa2698e32. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/BEUM72100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aab3a5648f6ab306601c502480bd7031ec2800eef8862877f8e735e0701858d. 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/BEUM72100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadce2d7255e393a40afba2ad49a7ef007f3beee69d99a2944e18426c5cac6f80. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BEUM72100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9641c82d45d53f28a0708cef2f0075d06b70a23ebf9ecf67ad15e8f376a2926b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLG662400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07167f7250b7608249e4e7eb8de77e68ec7ef89560d9f408f5a6fc168f394bc0. 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/NLG662400174.
Hey Bolle (feat. Rockywhereyoubeen & Vlado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a771890b465942729dd9fb161d9e328c3dce07f4bd6844bc77713a31ddea80. 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/NL5HJ2200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d6787c4456f2011ab45d7d35f86a0a905f60e0ba2e5eb74b7ecb5e87c54fc2. 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/BEEJ12200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275ef5ff3c580ec00ff2342c7a0ae0d66dc6149aac21da85943004796f2f5b73. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BEKX32100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f9a7f111732fb880e4d70a5c5c009305d65970fa9f031458f83329e00ad9f9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG662400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f2b49e07e42dff938caf7458e4d96d153c18664619e1f0d1a6acbc97c777e8. 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/BE7JY2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791a264167966931841ca7a2f7b75bd3ceec4561b9c87505ade794d8fe1f51c6. 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/NLG662200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca006d8ac49d66d461eaf3dd4005aabb5ee02c97acc53b7f55da57bdb8efb71. 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/NLG662100225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c6a910e2b3bd0ffbf8bf59ab45eb7b7d622730e929922a3b2bfa0578984730. 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/NL5HJ2300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e885acf6692faf552afbf87c978d699edf870c483aa291472a33b713d844ed. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG662200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66541b2df7e14c1c77520c42caee43d7b144c6af35c794dd3707c8ca57ec31d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLG662200503.