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 0x63c546eb77a29ce4e1d3c38c75836a765caa85fbf2d2c5a0d887e1ff4a590574. 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/b06d0b0a-5824-4958-a62d-95b40385d449.json and https://artists.proofprofile.net/proofs/artist/b06d0b0a-5824-4958-a62d-95b40385d449.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 0xf2500adad34a6223c318688621d70389b6758180a3ef05764b464b06cbb7c106. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN82553348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ec16dffce450ea8f2e7f42b20f47d29daa6e48708411fe656a11037d3a2f4d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZTB42569351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbd7a659eeb139a18fe44f70f46e5680d920bfd4fa705e5fdc32f09ff43cdd6. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZTB42569352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e8c4373be75363f6b68a2639c89fd632961839a51dded6e44aa9fab5c5ba87. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZTB42569353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963418fa2fafdb34de92e633e8ba54885d31dd92a0cc0dce849a0c89b5cd7e9b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB42569354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94c627c2a89ea594c595f10b9ae0fab215401615b94753ba7e83fb0d635a345. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZTB42569355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b371af4116b501d34032c9d6af10f6591e468cfa4814cd5460ae70bfb434fc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB42569356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359974f06def83d09df72fa33035888846f1bd8813e94766febb1e1c824b5f47. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB42569357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea9fa7b72698d47a5aad3c6e99b93b3c7e7731a9124c142953a91e5d49f18d0. 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/QZTB42569358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e318c0cd444253c8f1bb1fe25efeec396df1d028c1f6cbe16d8c6201874d32. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB42569359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1f3b03c99e6bc65892e20aff178352e2936b23f6950f05e986b18f10d3ce81. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZTB42569360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddae001f7497526fdf009544026394d30461e2e184cb1e53fa49e2076a353ae. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB42569361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0eca12ff424bf053b62cd9857d0eead46ac1aff94594b3fa3013f6422e780f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB42569362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0a08ca621b55a8b3d2eaa429acd057aea7f4db5358feabad9d75ee3a39d150. 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/QZTB42569363.
Kol Hamispalel (Oldies Medley: YEAR 1 - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab967020ff31b4b4e6d173487cc610ea74aaa6d0b8cb911d52cee9dd7087d8b. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZTB42569364.
Daagah Minayin (Oldies Medley: YEAR 1 - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f3628bce209f9a4d081cf027c80e4fc5f5b64abb195d798a91c1df0e7f1798. 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/QZTB42569365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d1816c67018e14825d4d3d692625765b2f5305bf222bd8046f9dea10026c05. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QZTB42569366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90274da65685a97e8f68c8d6ff1bd77d91ebca575f7a7fcb7975466d6f96ce2. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZTB42569367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e30f3d58ca1323050a0a27693ebe003f528b12d522d67944e167a8b69c17e7. 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/QZTB42569368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd089ea5a33f22e73c6a3a9c8636205793171227d3c1a0b563824e0dcdc2a52. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTB42569369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002428ef2d6609e82ecb645d2c3dab3bed56828196c123af71738d0487031c1b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB42569370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9ed59114810cbdecd78699cab6e29c5af31f957cbc9b1c3ea670e42451cdbf. 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/QZTB42569371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da1abf88d7470d73bc3314c720af5ff10ccf200b0bbf912d3c0ec8e97201139. 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/QZTB42569372.
Neshomel’e (Abie Rotenberg Medley ) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95a4ff0743845e8464d3c56653d5dc468633d8606416022e2ef7a0a96dc363e. 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/QZTB42569373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5807c705abdfad1d09c861bcd0916cb32d0348beaf59cfb71e38bae32da50e1b. 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/QZTB42569374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8ada8f214c49ace471cb763b721b9f89fcb5babf98269f03065f8afd9e79f0. 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/QZTB42569375.