thumb|Purple vinyl of Billy Swan single "I Can Help", 1974 William Lance Swan (born May 12, 1942) is an American country singer-songwriter, best known for his 1974 single "I Can Help". Background S
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 0x7554b29d708289cf0635195f2e30f74b84a6eca2ecec58c6d7383f9f253e05f0. 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/ba22619e-5188-4270-ac46-e2fd4637eb57.json and https://artists.proofprofile.net/proofs/artist/ba22619e-5188-4270-ac46-e2fd4637eb57.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 0x11e4642af660f367507fad042ae251d319db5d9bddd5989cb90f8da3341aa04f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USSM10004946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b496e936ebc3f3f680f7be7b55c865703f7a5302d3a484fdd27869a17a8520. 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/USSM10004947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb916ab7e86feee19740fe9564ef1392df62d2204df30ff467239cc26dcfd40e2. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USSM10004951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c796d20d738cb028623005369dba6922f713c946fb8de163154d10c541d3d17. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USSM10004953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295297d36e99c0b124732007773a1bc59142e9f62a4f7aa2a2f97ddcc45f7dcf. 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/USSM17500272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9cacbe5b96ebd1b05d76aa71e297d37b2fb356dbfd1374e13022307eef6e73. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GBMA21410298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16ce75a50fe97f159de16def01449c561e8f27fa617c189a1cce1a559af987d. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:09:42Z), 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/GBMA21410300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2dab685a985d584f5f2e3120f40a843483bc1fa6d36e64051c1299aff4f8c8. 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/GBMA21410308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70cf67c952178a56eac2adc9a582e3d41832de75d8a25d8fa1e8cf59a93099d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBMA21410442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70c13b84938da09c485f4ed9f647b431494fafaec07f9e2e224253414f6a5db. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBMA21410452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ac345f890ed6b160d83a51963a34a09817de6fac39dab00e3ca0f5e4751af8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USSM17400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31039cba00dd7f5dff59ef7e080726eb60f5c8bca37418b3f91604146d4408e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USSM17400218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb3c36aad68861b48a051d03a0889345786f06509459189445845f5f94ca567. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USSM17600280.
Everything's the Same (Ain't Nothing Changed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024a6c7e0a74169b5fd364075e1c971cd9b747ebc832e083d31cb5ecf9e78622. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USSM17500274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80575be9113eb4ad327ed39cf7e042f19f87ea5d8d44e71fde18fecd4d9a37f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USSM17500275.
Your Picture Still Loves Me (And I Still Love You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceb8703f6f5cec573bc9737c337eb56d47e7bedd50f510ece312bc4162a5b23. 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/USSM18200236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d7deebe39570a91c5ffb3af8e05d92e6e69613ab70a2a2cd7b944ca626cd04. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/GMBA21459411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d0ba76960daf8e454ec17a6b0160d54d5e4de69698ad9b2d8c63fc9ef1dab8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBLFP1641856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1d4ddf8619fd33a7ee238c56a3d89c29cd5bc79cb0ba64256703d81990fcb1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBLFP1641887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e680657436efc5cf7a2aed71347c3ae8194c377d4de551f57ead96b3bf88b8. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/GBLFP1641888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e40018f6c6540428ac81033f3189fe1b2b97f099e3c5c3e31835af08afb751a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/GBLFP1641889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cc3e7f10ace7097bb95b1ff5605fb60049b6ef26455dc02e37b0fe1d31788e. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GBLFP1641891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2b1bcc33f2200c8a8f1279b2937339acb83e1a8c3d79f68ab9a5443dbf3738. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/GBLFP1641892.
The Essential Billy Swan - The Monument & Epic Years
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926ebcabed6f0a870ca5ca667519f43d25c728a12d38d5a9929aaa036d25755a. 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/USU5T1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764d64a71720701845753151c3ab2cc8e4c203a895dfd15653c64d508f542a81. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/USU5T1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc483d5b5d76dfa6fd193d97b3809cf609b7966c5963c1172843432b61a7c4c. 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/AT0951000119.