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 0x3888f7c6799bd84b27495607d7e13352df5f0cfb0e4ecd7724e0587a4a4c98b4. 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/72a5083b-7855-49d8-91d7-a77f5d18a6f1.json and https://artists.proofprofile.net/proofs/artist/72a5083b-7855-49d8-91d7-a77f5d18a6f1.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 0x3b33bca96157c748738d9cf3709ad792b728d2d016c2b7cfd99080e872729809. 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/GBQRF0821654.
Listen with Mother: Children's Stories & Songs
The Animals Went In Two By Two (Childrens Animal And Counting Songs)
Over the Hills & Far Away: Songs & Stories
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4699ddaeb86b40932026f6b7475bf3c018a9a795675d8867b4e47f3e257c5029. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBQRF0821937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cc73958f91f67de74c796842ac275c56688be0ecd49d35d31577cdd5be3250. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBQRF0821938.
A to Z of Childrens Stories, Songs & Nursery Ryhmes
My First Nativity Album: Follow the Star
Toddlers Mega Collection - 100 Favourite Songs
Sing With Me: 50 Classic Children's Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bbb13e439f0e42c564a7ae40f8a6c4957dcbb2d7377c57a680553fc85d9141. 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/GBQRF0821660.
Children Sing Their Favourite Nursery Rhymes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84218f0b48b801b79e20e2357bbefd9c7cb3cf1792c68d0e241c4198523018b. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/GBQRF0821980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0be6f599211818d3e71864a4a1f04a84361dffc81e8a2d32c7b82aabc75149. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBQRF0821495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57ea1127fbaff6a94f8e1164531bdb9dc48e93de43e42980e8604dc0622ab68. 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/GBQRF0821519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a772d53a33d1b36f5f5fb9f0bc18b0a0a41facfb02d840d71044022badb5c00. 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/GBQRF0821801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6b785fa16302044866a95e2f1990866ebd6092b12ac000accca4bf986f4cc1. 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/GBQRF0821661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b3557654f9c7febbd8b834836127e69517a0e856aa2e5c15994ee645e4318c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBQRF0821638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cbc3cb72b72fd51ca286fef116cfa6fa0bf3812eaea64ee6529da6b5ac7642. 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/GBQRF0821747.
Twinkle Twinkle Little Star & Never Smile at a Crocodile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b33bca96157c748738d9cf3709ad792b728d2d016c2b7cfd99080e872729809. 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/GBQRF0821654.
Christmas Favourites & The Twelve Days of Christmas
The Wheels on the Bus & The Ugly Duckling
The Tinder Box & The Emperor's New Clothes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b3557654f9c7febbd8b834836127e69517a0e856aa2e5c15994ee645e4318c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBQRF0821638.
Jack in the Box & The Teddy Bear's Picnic
The Magic of Christmas and Other Christmas Favourites
20 Christmas Songs and Carols Sung by Children
Christmas Favourites & Teddy Bears Christmas
The Night Before Christmas & When Santa Got Stuck up the Chimney
Alice in Wonderland & Puff the Magic Dragon
Learning the Alphabet & Learning Colours
Old Macdonald Had a Farm & Baa Baa Black Sheep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cbc3cb72b72fd51ca286fef116cfa6fa0bf3812eaea64ee6529da6b5ac7642. 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/GBQRF0821747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1f3b729d373cc2939c4fdf612a5eae2e35ba35e88e9fcff03964ab2c5751b1. 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/GBQRF0821958.
How Much Is That Doggie? & Hickory Dickory Dock
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc96e3a854d293d4c279e422ac4d3c0948b36d31197d59c62b2e0cf0c428e9b1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBQRF0821884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84218f0b48b801b79e20e2357bbefd9c7cb3cf1792c68d0e241c4198523018b. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GBQRF0821980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560489863447fbd0227d91a880103ed92e712acfca3a043875619e57fc055811. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:52:05Z), 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/GBQRF0821733.
Nellie the Elephant & Polly Put the Kettle On
Children's Animal Fairyland & Land of Make Believe
Humpty Dumpty & The Secret Adventures of the Pots and Pans
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84304a8c589f0768da598e0248e40108cd8d0770440fbcdf7571117b5e104bb6. 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/GBQRF0821637.
Christmas Favourites & I Want a Teddy for Christmas
Simple Adding Sums & Simple Take Away Sums
It's a Lovely Day for Snowmen and Other Christmas Favourites
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dd724899a990f254b41a3cd0c5d0f99b78a64e0da24bc41e0d2b449cae3f64. 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/GBQRF0821824.
40 Children's Christmas Songs and Carols
The Runaway Train & The Animals Went in Two by Two
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e09b18796873a954da6df7382ca7915865f71f495e95c1a8fd481f5d250a623. 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/GBQRF0821927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0be6f599211818d3e71864a4a1f04a84361dffc81e8a2d32c7b82aabc75149. 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/GBQRF0821495.
Number and Counting Songs & Learning to Spell
Twinkle, Twinkle Little Star (Alt. Female Vocal Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238f17db03ebd765a4a3d5cd4c873cdbb4cc22286122a834708308040e20bd06. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBQRF0821979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6a011fc6a4fb6cc8a433216626134cbbbecdc21c80e79a207f8dd4fe0f17cc. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GBQRF0821686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d05636379430d2d5c7367dec628934fe21e758e25e10a5eb4f8b4bec84404d9. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GBQRF0821590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e2865bc9c012ed6eb8011ae29493321e2c284acfd78eb00ea0b8ae1be76d51. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBQRF0821685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b7bc3034f60445854e5d7269af2e7d328f8acac9fb437330b85e924ed536bd. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:08:44Z), 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/GBQRF0823035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1ff5a38ac08663d0860cdcfe06abed0770e4962a339eb58e1799729cf9cc07. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:27:16Z), 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/GBQRF0823053.