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 0x2cc4676d98b6d12f31f6e01b2a5cf4462b1b74a619226a78ec004a3a395a95d0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d59da90-982b-4182-a6a4-4f9c9ca634a7.json and https://artists.proofprofile.net/proofs/artist/5d59da90-982b-4182-a6a4-4f9c9ca634a7.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 0x34c4a3cecfed26c59c11c0de47828a4435ca942d05b493a8cc20de674ae70a5e. 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/QM4TX2533397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a16faaf63a823eccadb07cdb1e1cd235fd6eb629f746f4290725fe866c9bd3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:47:22Z), 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/QM4TX2533413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb56f4776d36dcb3843a40f40fb49be3ebc8292a58861349c5a2789348c98ac6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:33:46Z), 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/QM4TX2533418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fd97fb513d90233bdbd593f4e7822a7e0ef02ecfa6cd61565861382662e1ea. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/COFC11332032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb445cec7450fa00e615e4a66a390dd7629f4eec8272adf1d0a5c9b46d88f83ed. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:24:50Z), 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/COFC11332041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2e5d76a5f4ec5985b1c75810bf9e259b8ccf4ca5c6cfe6536250dd5f65ed27. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/COFC19827483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a63ba6e20f5e15ebe7cb97058ad439a4d21c9d25db858716b1b5cbd984b43c. 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/COFC19827485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b55503fc8a071d419575d9bf00a469a129a61f4788c9fbd79df0d11f5b3ddb. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/COFC19827488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eea4dfe5a33b5136269982f0b3e1397195227d9a740640348da6aa83d349fb. 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/COFC19827489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc046361b8620cc652558426db82237946dc7ddf0cf3b193810696bab47f7f208. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/COFC19827500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53f1533c3c656953e952179856e6d6ea5738c9a929a70ca815a75f4670502a9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/COFC10500502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065ad78006d3a0241f8bf774fa37fe5a1896222fc92a21037c80634539e32745. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/COFC10500519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7ff1f215d501c988a649f556d0b42406a8c8c023c5d0eae52ee787a3882bab. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/COFC10910143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86343914a3be36b3c50490d9d0449cca790f2e6d56900a9b2b1b3a907d30e267. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/COFC10910150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147de4ec743313becab5606d37d038ebb3788f98e1460249a1cbf8ea91698fb6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/COFC10910151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4f2ae4cc99c35c316048228737d1bd5ebdd90d792a68a83f1606b1bd64e318. 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/COFC10910153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f389780bb88a4b7c7c138e6b1daf1e157b6b5fdf405a8981c003478a98dbbac. 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/COFC10910156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e9c9786ac082d64ea0f2cff0f625c48950279872b4b4c17c9cb93ff68b2b00. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/COFC10910157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0714c90e4360b2c14e3b4421942c839f01e8024bb82a43916f432e592fe3a2a8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/COFC11332013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876dab90a12e090a9f30bf71f831458ffb64e89c36d4d63df195c892321f7238. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:38:43Z), 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/COFC11332023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c48c2ae10485e39d8796299b6ee4b165970b3da03e96699919aced4f6fb421a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/COFC11722305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c14fd1ef325722a923270aa48ffbd786413859df92ffa3b062179bc8778886. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6N21734864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fba9ff148379f6ac101d1612cbd693201d9d9c11e9a99956c8729eda68c0a58. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6N21734872.
Estrellita Donde Estás y Más Éxitos de Canti Rondas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f7ec68676cb2c797dd8aa76608379b9debd6ba9d35c79346f025be17dd212a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM6P42458560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21de9c394bc5d738ba1084c3273816d88b8f1d182535bb1b055fe30d9877fb42. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM6P42458739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a88b4fa841d5a07d74e2f860de6aa777b66f4ca0465e808cd3f92ed485c6fc. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QMDA62540587.