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 0x7d93140197651c5e6e8c5a703aaee1d1919293a851a6103d9244637f563d1d5a. 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/d27c65f3-0ebf-4421-b71f-2f43f53cd0a7.json and https://artists.proofprofile.net/proofs/artist/d27c65f3-0ebf-4421-b71f-2f43f53cd0a7.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 0x11376e6d596a70312f9f249914d1efc61a73ae619dd3328ec0b182b4525b84cd. 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/ARQIW2406396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb773811848d41b2eaf8d41f8dd2968e11bafec8557cdae783ef2d626ca94c023. 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/ARQIW2406398.
Grandes Boleros En Piano Y Ritmo (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc675312fc766864f955d3620c868c5e0ebaf809f4f20c35236ac436e0213acd7. 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/QM6P41462688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6aa676233f576beadb3fe2957122af3e10b108394f2bda63d53822ce1b5b70. 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/QM6P41462689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f1d4fa92a693956350b0051cdbd6b58273f68786c6a310b3e7d05e8c361feb. 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/QM6P41462690.
Solamente Una Vez / Sabor a Mi - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa143f8f33e8b2cc7e66c6745d2a069d3c93b95c121358fa6318e1832f8cf248f. 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/QM6P41462691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5c697a09bbe2164efdc696906eb41b2be83df21dc1fcd674d6c4f9670dd0c7. 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/QM6P41462692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7d784076bc1ee9a39f8b487357bcb1b76dec352eb03e00c9fdd219e993efb1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6P41462693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2644a0cc26c9e1190f0195b277e666a78a5417730135bfe8c442cdc910c22c1d. 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/QM6P41462694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26461ba713c531216a33d86c5c09af6919a62b8b561876fb4d5502adb872b33c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P41462695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31e9ef21708b8df6b855025324d83d9a17c09e183b91739763a162dbef0cf2c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P41462696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ed969d9d65b18b49daf4e5573538f73fe1dcb6b72082a6b65fe656d253ddb5. 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/QM6P41462697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a72e625efd2052c09f499230a6e56710b3a5e44d7d9853b0626addc104a7ca. 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/QM6P41462698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fc59c1fce5b91a60e2f8da4a9d0d568b873a0ece00b7978803b8cc12590d05. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P41462699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844487af5debaefa0a6ba9d6e13ac9d4c25da55d28bb2b11e36b9130e93131f9. 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/QM6P41462700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c0abefea7d506809740ef7e93c409eb63c6a6630ed0d67896b84715ec1ffcf. 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/QM6P41462701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3bf7b17bb3edd719a7676bdd6ef12fca6f89db90dd3bf8939ca9e151f1e0ae. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P41462702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2514b0f206f6f56b43d1677ccf770e6d38b8337656c8b2f09ac68b8fb51c440e. 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/QM6P41462703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ce541a288b1fdee78da82dd2962096fd4822a36b20ddb9f7946dded1b9a7e5. 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/QM6P41462704.
Cuando Vuelva a Tu Lado / Sabor a Mi - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9b13d3c36209111810565b60738b3076531423045c90daa7324806d98f98e7. 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/QM6P41462705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8f1086b0cb51c1b965ee55982d5c8141a5b16a9219458a59f81efa61c0185f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P41462706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2d291451298d490fa1e633b131bd37c424c6cbb1dde5002bb0b61304096823. 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/QM6P41462707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5784cdd8d6c7cb459aae2d0db2a7fcd417ff472b69826574fde086050550a52f. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/UKXN22441824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac466b0b3ea31bf10ab672daf11bf5c104d6034000648c707c07fd206fc3a9a3. 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/SE6A92305270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3966dafbf4cf674ba2a538a20d703af0d892e87a9914355617d9e72dd12a2e8. 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/SE62M2338164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf9dfd30193bfdc5145254cbb2d5b4544bc8d07b28a51e063173edd65f0ce4b. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/SE66N2323658.
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 0xb74ac75141ff96955f02f60185525b0f5ccdc82126d2949f2ac428a11273f11b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/SE6XY2362564.