1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc48b978ba276008747653740b6351176eb4d11d4541b792dc9c941ee8e927f. 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/d19eb5e1-6bf7-4c65-a284-1edfa72d2daa.json and https://artists.proofprofile.net/proofs/artist/d19eb5e1-6bf7-4c65-a284-1edfa72d2daa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Song of Our Maker - with Sami Yusuf - Arr. by Tom Rainey
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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ccc609ffaa6ac69d8c4134a632ffc513e17de5187a034062e84dc91a7c424b. 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/GB5KW2002911.
Make Me a Channel of Your Peace (Arr. by Simon Lole)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6ea02470e5f6e3426a5c6f219bb52cd0459721abe3a9fad1561f07fe001a32. 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/GB5KW1903120.
The Impossible Dream (Arr. by Tom Rainey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73517a07d58e54b5fad1c0d7bcae95768cc8d01b14e4b9f6d0dd3222a89a5799. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB5KW1903117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd321f343a1df7fab3a4e8eb68e60e8bef591b874f6bb513d35c33fcb805b2c6b. 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/GB5KW1903124.
Bless This House (with Susan Boyle) (Arr. by Simon Lole)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502a1c63a0ef0338895435fe71ed4c996f8b23988be4dd49a60ddbf3474131d8. 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/GB5KW2002897.
Funiculì, Funiculà (Arr. by Robert Ramskill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561d259861bb46743de20043ad59a5aef8e24783ebefd4d84d69f7c012c300a4. 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/GB5KW1903113.
The Loveliest Night of the Year (Arr. by Robert Ramskill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ff3d9b17079b99a09ac9875a5526055da3b0b86527ba0c4e923c1c1305c30d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GB5KW1903122.
How Can I Keep from Singing? (with Dame Judi Dench) (Arr. by Ian Tilley & Fiona Pears)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f91691bcd7de2401a1b63f9fe770f4bfbae5c56ecb37bee4d05643c6f8d9f5d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB5KW2002894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b51da4adcc10838a5984257c81c6fa7fb1e431fa4e934c04376601360172ba3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GB5KW2002896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdb6353419144dc9cbce9c42d992e831aa4227f20ba31bb5319e7c68b036376. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB5KW2002898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8624b27d87a68cf140019d11b1ac7b9a1a8a798cc015c4ee1e7d0ca65b9e2e7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB5KW2002899.
In Flanders Field (Prelude from the 49th Parallel) (Arr. by Simon Lole)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f4c552f1189df4eeac44986a66c4e4fd8ddf91f159124e7070fa4dad2abb20. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB5KW1903121.
It’s Beginning to Look a Lot Like Christmas (Arr. by Tom Rainey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfb7cb4c9550eff966685468d6a9a065c1580df03230009e5b7674611d8a73c. 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/GB5KW2201792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b8c5e891b395873628fe11419f11205099e7bff368de1d49e13b7f59d7a890. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB5KW2002895.