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 0x600c197a5c602a65ddbbc6f2930cd3ea95357928a3d3a7e3e00bbc21e8bba048. 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/a7ea3ecb-9322-41bf-9ac4-8ebce8a211d8.json and https://artists.proofprofile.net/proofs/artist/a7ea3ecb-9322-41bf-9ac4-8ebce8a211d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Sax Serenade Pt. l (Saxophone Instrumental)
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 0x2aff903f67e8d63ff7e0390b53d70fddcb4484dd97a6e18e2b00a9d73399b589. 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/QZRP42340960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57cd1736297009162dcf7da5636505b1ea143f579fe188df96fa72d2bdd0838. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZRP52306623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac17a4f9bcbd213f5d0b106936751d7250608775b4235dad547c2b5dc49c73b. 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/QZRP52306624.
Make You Feel My Love (Saxophone Instrumental)
Make You Feel My Love - Saxophone Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb13e80ff90f1e540bb19b5fb7d8b367d2022bb54bbf189e1b6eecdc90c6e84. 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/QZRP52306625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39338837fece266b394479a9fdb64e0c0d8a0aeab6ea43414bfd12fc9813d05a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZTAS2308973.
The Sax Serenade Pt. ll (Saxophone Instrumental)
Sana Maulit Muli - Saxophone Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977eacff25478ae0c280c2d3cbce58034e11f97ac0f6386c7b5ff4981537e9e1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTAS2308863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c986cb75e3cdc948f2781e0ad039e87b9c0dd0d0253fe00448aacce6a38158. 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/QZTAS2308864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80bcf4374d75ac12aa59643f28a97c03aa86fa4481cd65051d57cea3047779. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZTAS2308865.
My Heart Will Go On - Saxophone Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7731000ed22431e118834c14e16347bf5e35fc7ee3cb726f94ddfdf85fdd61d1. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZTAS2308867.
Wonderful Tonight - Saxophone Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee989bfce92ae17c522c5bd9ecacfc85a00b3d33106072dc2fb0c72b0345f6d1. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZTAS2308868.
The Sax Serenade Pt. lll (Saxophone Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae8073a43c016aef33e4f514ed66d3708ffdf8e4b605af482ba4a36fa6e1d51. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZTAS2308874.
You Are The Reason - Saxophone Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee93d0c71505f9c2a6e6f7e527419a7cc826c946bf756b6397b940a5cf839b7e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTAS2308875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f36c6e9ac75f71763b6153abfa96fd0eadd9ef8849da1fa3e071c1cd2e6b46. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZTAS2308876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8477b445b5eea0781155e38f06cefa225f7679f2e38cb76a1196fc7f452b7b63. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ7R2455320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c002d55d6e5ba9cba8d069e85bbb523bcc47f281316e6bcf2b9042fb15051e6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZZ7T2472171.
Can't Help Falling in Love (Saxophone Version)
Can't Help Falling in Love - Saxophone Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c361f26768be0ffc242532342c4aaf06121307a3db2545bd86d46f12dd90f08. 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/QZZ7T2472175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1a3a2418cf9eb4a46220b48b038947589bb6e140b8d68f1e053d78ac5959fa. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTB22585435.
'Til They Take My Heart Away (Saxophone Version)
'Til They Take My Heart Away - Saxophone Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79c45671a704525c514072c5c075ea231607372d3e4d6ede3b7909f7a5e3527. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB22585434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1736590ae36cd58e9849bb8d0e9e76ab1193b73f33daca45ff3cf401c83442. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB92552211.
Minsan Lang Kitang Iibigin (Saxophone Version)
Minsan Lang Kitang Iibigin - Saxophone Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ae82e317fe247ad42577a4a5be348461518b98ca11e74a09a53b6d598a343c. 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/QZTB92552200.
Bukas Na Lang Kita Mamahalin (Saxophone Version)
Bukas Na Lang Kita Mamahalin - Saxophone Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d95d5716280c2980ceca09310cfdd486c0d181f72e2f8c6b9986a036b82e6c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB92552221.
Kahit Maputi Na Ang Buhok Ko (Saxophone Version)
Kahit Maputi Na Ang Buhok Ko - Saxophone Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f4d95ea30a9753225962759d6b9d79c01e7338928f15ce7bb9e980bdd9f061. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZTBA2589667.