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 0x1f97e179690243fbe98be7ef2ae75a337ab42e691f6ac7fa1e28dd165d8c4f73. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/941bf26c-28d1-42fa-83a7-e26386a7dada.json and https://artists.proofprofile.net/proofs/artist/941bf26c-28d1-42fa-83a7-e26386a7dada.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Popurri Charangas - El Asteroide Y Su Descarga T.
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 0x6a5b95101845b0ba223667e9fd1dad7c005a963e4d503c688b24f1ab2d412096. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/CA5KR1903023.
El Traqueteo - El Asteroide Y Su Descarga T.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4d6f1238772f24973c236d4d0ccbae3c47a5bdd4bd7a73756f03e4c825817e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/CA5KR1903024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6031ec1cce245455135fa821383f8b1ef9d9f8e133671508e7e48521140d2387. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/CA5KR2056209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe989bd2b476210d9c6f11ceb933167dd773e2d2b568869a8d4079f74e656cf37. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CA5KR1968039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a4fb61e76c42949d290fd05d69b64eaedd55043ef5eaae13518649ae7c8915. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CA5KR2038049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b4d1c034fb1157e0a39d610d2528cf68a77059ee27a2ec4c9411207ebdfde0. 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/CA5KR2056215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d96e63c96acdd24fe2f80e752ceb927dd6382a11a77ef26830e334022a3fe1c. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/CA5KR2056211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf9f003e9a175ccd47eb2bdc57bd29f1440bc48c94fb6a804ee9670c249f04d. 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/CA5KR2038051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0360d2e1ad54fd83bde3f2dc420cbaf615ffafc477c21f43fbd2df00833d9619. 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/CA5KR2023786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd085fe08d143db8076c9a29793ee0ee1ba3afe668fc53489ec8800c735b560. 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/CA5KR2023788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2ea487988094c8d5692feb7e16ddda2a31071dcd9ad7303473061dfd0f992f. 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/CA5KR1957395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe885878f2f69dbed379f17c725b70b12166f86fe7cd885634db63f4828da31e1. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/CA5KR2091386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049dbf716a0961258fc8cf78a769927878629369da31a1d4380dd73f8dc9eb61. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/CA5KR2040994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5945766f0d9b5c5ea9a70cec08bf71683961550e88924aa3718d8093c443af. 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/CA5KR2091395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62aa38dc1572ba135cf8710ce7c04ff9926adf5bded646f1e3ce58f71eb1503. 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/CA5KR2051635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a53e748081402644d99609aa030ba94c61802e92b74cf7d57e7bc602907467. 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/CA5KR2040996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a44435329e545f7efefcbd99c4006e3aae7b6cc69b126251856e67596f837a. 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/CA5KR2051636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960efaebcefbe8332e32ec5e415e2e8eb8111b632b854c553de6fd54b8b78ffc. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CA5KR2058407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9cc1df3a702bfc964397b37ebf91e5f96efcb4ac3a0b1f0fff25b89c318955. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CA5KR1957391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dff56a5977066110974d17c0f1bff0226aa7f602e94cfde94f01d547bcd7c8a. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/CA5KR2058413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2c54850671d97d4899e3e0af95c4af3f8b84f636279a5b387f5690bce636f7. 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/CA5KR2062543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2d1e75412f7a0faf258df6be9595929e7f7f4b02ac1af52aeb812222d4f0bc. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CA5KR2060132.