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 0x9591c8f07c8bf4f68c6707668a08c7d3790b4e568912cb5a955ca545669cc7b7. 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/f229a2e8-aafe-4969-8d87-326f0099de53.json and https://artists.proofprofile.net/proofs/artist/f229a2e8-aafe-4969-8d87-326f0099de53.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 0x308e51ba78c3ca75a4bcaaad310741fae9fff110cb37e46fe57cdd68a9afa225. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBSMU7423413.
Roses Are Red (Violets Are Blue) [Luca Schreiner Remix]
Roses Are Red (Violets Are Blue) - Luca Schreiner Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21ad6e2bca36c09b2abc84400308ace800c468986e357cd22f43143ed53f07e. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/UK6KW2100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9266372972ecaea1acea2f3608bde3f5eb55a78a03ec55b298855458d13f1a9. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:43:30Z), 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/UK6KW2100790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917196fb967e7996859648352f8edd0da86b1784a604eccc75c99d1b2af4aa66. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/FRX762399590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e3c075fdf017a3309bf40bb2eb68d2a661feb925d8bf063d5cc5e0464c0400. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/DGA062377106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93c85afd5f183c76586565abbb52eb43e39594f97302ae50ed70d01e961ffdf. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZTB72344931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa467606519c5e26453faaa41dc6fc633a26dc9d5d6200a31b0699b3d07db7c7e. 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/QZTBA2317614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe345d6781cab0297e9734fdc7f64bf511ca12103b730426e57c3d5f775179825. 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/QZWFM2360402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ae1ff317de463f7e3b21b9c7d05ce50d6a2467df2ace68596456327a8958e6. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZFYY2412883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c06bf5bbff08a4494f3418a10d3d1515f26cb98e16f0c8a9e7e035268fd7b4. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZFYZ2425073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb246f6a52882a93d8e5e6641086d34f0b0c00c6b2f2bfbb8dad1561585d471d6. 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/QZES72422650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47ecd02c4654b75bfcc185e285a3999ffdf0484d2394b6c29ce0b1bda50e2ca. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZES72429172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe345d6781cab0297e9734fdc7f64bf511ca12103b730426e57c3d5f775179825. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZWFM2360402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f67a05006f2d7856c49db88672072f7c0fbcb008d2bedd4c1b97d506e9cdd3. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZFZ62482658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ae1ff317de463f7e3b21b9c7d05ce50d6a2467df2ace68596456327a8958e6. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZFYY2412883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c06bf5bbff08a4494f3418a10d3d1515f26cb98e16f0c8a9e7e035268fd7b4. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZFYZ2425073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1622ef2619be69fdfb154e113c9fd06883bba2c87299e158d2c64c8e0536b2e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:34Z), 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/QZHN52454662.