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 0x089220f34d9e97538ae6144da4dab573780210e31a916ff0fc48e2853b450e6a. 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/f67952c5-1fd2-45d0-bafb-46b0eaa21073.json and https://artists.proofprofile.net/proofs/artist/f67952c5-1fd2-45d0-bafb-46b0eaa21073.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Boleros De America Con Orquesta Y Guitarra Espanola
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 0x6f637108d058c38233a480fdaa37dfaaef6fd150f5d18e809afe4b41669d872d. 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/QM6DC1574629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa40665bbad7c6700900b237a4144efcb61998ff802fa97365c28de4da20d2ef. 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/QM6DC1574630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a9f8427f6f8532316b2c9ab690fc8f3278e9e8ef02ce09e4ceef7b68a13bf8. 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/QM6DC1574631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98423f92702911d7177ff2d3cd160877612cfebdfa570af04a4cd3069c6c3e90. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM6DC1574632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76281e4cd708217182e7568a90549d657b7b5e28b2a4daf522d2cc0bde32d798. 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/QM6DC1574633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb7036b692182a1e7a2fea250d47506df9eeedaae722c6cc84a5bab7c25e87a. 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/QM6DC1574634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffe13f2664999d1a64a170da872cf31dd0d96c678a737b54686fec8e38b535f. 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/QM6DC1574635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2270eeb6ee698d6fe9bac09e5609db062c97decb527b9356f0325baec26e8eb7. 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/QM6DC1574636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74b6088ffdb9cc3b17613443e3968309dcb1680a00cc2b9f1b79c6736d10296. 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/QM6DC1574637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36898b14b7abd357622720405786ebcf9cfc57807efd12475ca8c18d78ab87f4. 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/QM6DC1574638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf921c97d736260dd2fce9844caef841bb25cd733224e83ef01c91e1ea0500630. 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/QM6DC1574639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2e41c691541af00c1faf02b1e524747977c37ae7823963431c49f9310bd6ea. 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/QM6DC1574640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf855197e7b601d40350dcc0c20383d17a6db3dc7ff39d0e54d072ea3e8ece9c. 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/QM6DC1574641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785ffa5fdd46b1607cf15b7717cecb222d0bf57730d0e67912aa5a0f8db096c6. 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/QM6DC1574642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833acdf8eb2489af25bde02fbb2dafe4e4d021ab8e1734f70cc401ab7b0627dc. 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/QM6DC1574643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfe46d4671764167ae3e08dbe7069b7a6cd3967dac041fec31f2d120ba43a71. 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/QM6DC1574644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9c22f5495ac2981be8a80e9b535559e808f4bb210701ae36e85f0020e4e3f5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DGA092351082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0332841bf5f14e39f047aa365b4d97b8725de0d215019968ce240cb93dbb11. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DGA092351083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2d28d6be38572cd2574b54ad587080ee8b9dd43275dd962f5e55d780feaf76. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DGA092351084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0377f436e1f4a8208a1330a53307f50cfdec93c9a2420279f8d8e957219e75. 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/DGA092351086.