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 0xea83db7ce867014f30beb37c2346e800f02267e7d0723a996f9d7818f6d8d70c. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01964560-0173-45db-bc5f-1a0ca7d98d6d.json and https://artists.proofprofile.net/proofs/artist/01964560-0173-45db-bc5f-1a0ca7d98d6d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cddae139a62f4be1de38ac9a1719f043bd8f5b368598cf70e5133e6a26da399. 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/CH0800712101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa078ff0158b4546ba1971f42e04505827724864041dbd7b417f33e7df6c4934. 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/CH0800712102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddbadc2f35d008d71e66a5c6923984a0b835443ff3e335df6e19eea957a8999. 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/CH0800712104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584bff75dd7fa60a78069801d0df6b430cd82f020635799a9c86aaa8c8bf609c. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/CH0800712107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3aad42af9063128268e4591260909065f766a0b9f913bbb94b87b49ea015d2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH0800712109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b8c8f065722868c4f40cca0a9228c254b99fc45de3d9125e0f7be6bcec5d09. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH0800712110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6564931afe5067690c9bf79158c85f827d6af4ed46e55329703b635c9cd133fd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH0800712111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff83ede361009291c9d9821b5b9aecc92e36e351520bdf86940008eef980661. 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/CH0800712115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53500785c1e6caffc2c1bc3452db6270aee37e0d7b9cef21a745d92a60011cdf. 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/CH0800712116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998c895fd1ba170736c9cc2da53f1618fb6b60a835d279f56f3ebab7daf685ef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH0800712117.
Working-Class Heroes: A History of Struggle in Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaf6ba2070dcd85df09ef0988208e382734baf39d14c8b057116d118a5f8e0e. 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/USFVZ1890129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a198196ad813f5887fda6f0a2a32e31084f8213dade2ff93eb43ac3f01c0cf8. 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/DEC410500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290db49d5bcc37887f44a28a2908b2142adb1a196b5fe5bbbff0cf491ee3c4d7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOZLG2201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb871b811bf4085bc13cb6259b7ae0b02521b75f64460b4b8467f6ad89776746d. 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/ATUM71001566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1ab6300bf5ef807f7a80f32cb5cf2031b4497164887952312a0f894deb8873. 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/DEA819600438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6a65efcfb50e9cb03bb3a3ca389316680c01d8ae3a598ebb11eb3fe3b8188f. 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/DEA819600441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e27e2abd71be93db3f59bf3d462161dc6a7e953bfdfd126ad1afc6088c90c51. 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/DEA819600442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad79e862ac8533a4e437fd405df7456acc1b56f2832bae0a6c89b2fa997a72b. 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/DEA819600444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aee17c247f229aeaa8c90e4554bc013f2e966622530f4c6574412ad763d319f. 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/DEA819600445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd03260f839405d6c2fd9cc7631cf33e221cf542fa66ccaea5a84a2497c7f996. 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/DEA819600447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6a32a2d8912b09601a886ab3d6909711b3117e2756ce234050f51297219e4d. 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/DEA819600448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc422203359643e9dac8230ded91ec718c77d0d2c0eb43d8d25f68dda6a5a51c8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEA819600451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae8935184dc4c8ecb279d1dcdd1af48b04456b5f162465541cc0ec695473d87. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA819600453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5d26dfc5dae50ae8e40ad9b37964d4b7c795e3809469b14d563fbe6e0aa3c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA819600454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083a62b0de9bf545946720e17dcf3e53ec2e43299583df070d15d96b3c77a5c7. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEA819600450.
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
Amazing Grace (feat. Yvonne Moore, Happy Pipers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4c5193a09b500f3135bf3713fca12eb436b8e32a2023b59d9288bec18fe698. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH4610400051.