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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6687713a1cd3f07495fa155a17da531b7a1b6ad8a894ac7766bb7e94d0039d9. 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/0b913f37-ee35-463a-adc2-af80061165d1.json and https://artists.proofprofile.net/proofs/artist/0b913f37-ee35-463a-adc2-af80061165d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music From Walt Disney Productions' "Bedknobs and Broomsticks"
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a07f25178aa4708e12b2853d7ead4d5dc9cb442288f2bcc097115a241f55b57. 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/USRC12101602.
Stars of Chitty Chitty Bang Bang Present Hit Songs From The Musical
Tschitti Tschitti Bäng Bäng - Deutsche Originalaufnahme Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0053bb427fe25b06c09d717a979793315a5e465af45ad9b3c6dc0500ddd4703a. 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/ATM891402194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d60f45e82dc9e3e8f087f16017eadd246232ab20f06bff8457ae36be69dd01a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:19:49Z), 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/ATM891402196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167eb8ee954d200952c1624cdc9c6d8ff9cde5b6eec815fe2d6cceb9ee254626. 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/CH1601304649.
Sbarra - Battements Tendus: "Scales and Arpeggios" - from "The Aristocats"
Piano Music for the Ballet, Lesson 3: Music from the Classic Fairy Tales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7471324d6fbc84bfee441b7e2f70dce3a50194ff828295341f6796696b7faa. 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/ITR551600107.
Centro - Gran Valse: "Let Go Fly a Kite" - from "Mary Poppins"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68212ad03987927200ff42b7a39bbb4cc28d67761f017c929ecace805ec4caf7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITR551600120.
スーパーカリフラジリスティックエクスピアリドーシャス
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b93ec979cdd608d87ea01e6b416d6874812d6215538b0d02159913a180a434. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPF311400005.
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 0x82e0664c1d8cdf688af9d1654824f77655e41644a8892470a3d7e63cb45c03be. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USL4Q1847455.
B:2 Feed The Birds (Tuppence A Bag) (from Mary Poppins)
Flute Exam Pieces from 2022, ABRSM Grade 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11aeb315a0aba197a847600e025a3f1f530a0e81e871f2efdd887e29746569d2. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBEYQ2175005.
B:2 Feed The Birds (Tuppence A Bag) (from Mary Poppins) (accompaniment)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d87a810a6f0e586f16ace932847fa4f84d07c37edea9b6fe62bb89fcbb2f71. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/GBEYQ2175013.