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 0x2f5cfc5b865e92abc5d798dddaeef916954b7d304621c916fccec8da96e7c8ab. 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/b1919b10-8224-41e5-af6f-6099eda44579.json and https://artists.proofprofile.net/proofs/artist/b1919b10-8224-41e5-af6f-6099eda44579.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 0xe2069b4a26906e6400ad81e9d9c3c00c047705145b0851112c9530747a25cde6. 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/CA6D22100761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322e84aedc21367e16533adf44f875c7f2d94ae1abb54c3c66caa656ba12a589. 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/QZZ7K2403753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c456323e9d37d4402e851c8413a81b8a229c1559b2654e10f99fe21e8678fa8. 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/USA2P2515794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31953ebd8c5acc253dddf2f581c04a318a42c3f0d6afe622e77f5693e71c8df0. 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/QZES82517554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fc6b9682b2cfbce2df33c9da08e198266e371e9d4b059639f49de2f9c74887. 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/QZDA62558198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d8bafe67070a38665cd11ae5cc7e4898f95112af3e5294be90d770274a64bc. 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/QZZEB2450741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4ecdbb58d5557943e087557113a83da89633d7d2e1cdc244ca350246e0a8c7. 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/QT3EY2482004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3bd753e236722d0f224dd31f42c472b9c955e6953884cd9369d22ff2124c7f. 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/QZWFF2411050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8325f24984c028bd24fd2d99aa518c59f758e4dbbb7795e95ce88a5dfd084a. 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/QZTBE2453604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fa6c38fcc33b52882579085fd084abca3f1dde6babdeb35d395664d88707b2. 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/CA5KR2459239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7194a97e4005613dacba263a52dbf5bca4f2a8044469d3083fd76650b5743a53. 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/QZSYP2444652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba13346ae5e257d6f82f08837661f43381d27a12f6209d7ce93e3ff466d843df. 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/CACWV2404826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ef890f997c0144046fbd0cc079fda5359e411df0ba0bc31fbc16e1ce829e2c. 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/QZTBF2395573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce8b34c49239b4fd81ca370deed3b3cb2a9d3ae5f58d584c780310810be1336. 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/CA5KR2363586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89d744ade2ade5c4ad8b34e81429c9e0081fdfacccb02d10c95e14fd97c564b. 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/QZHCR2100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad03186e398b266509e41edc4f1a413cd3a9fdaad41dc692115a073181ee28c3. 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/QZHCR2100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89d744ade2ade5c4ad8b34e81429c9e0081fdfacccb02d10c95e14fd97c564b. 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/QZHCR2100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad03186e398b266509e41edc4f1a413cd3a9fdaad41dc692115a073181ee28c3. 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/QZHCR2100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bcef2cd40ae45f47bbd2ff377f8836128c906b04ee988051f4a202539dc1eb. 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/GBEWA2300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccbfdde345cb7e3ecf670c50b18efd324d05b4d188e05c34b18dbd0cc95eab5. 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/NLT2H2100823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daa1319dd03268441a359a387ea7399455c0c705d97cbe2fd6f31ebd65039c0. 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/GB2LD2210037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5a6d41871fbe5c21c0ba0c339b03b03828b8c0d9281f4c80de6235fad0efb0. 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/USA2P2133727.