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 0xadbcfc0a57a13a1365f155c5ef7e1b8f0c965ab8383d7a7f52edca02fe14bcc1. 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/498e2fa7-0b98-4e52-b29e-041b55004f4b.json and https://artists.proofprofile.net/proofs/artist/498e2fa7-0b98-4e52-b29e-041b55004f4b.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 0xb2192dfe455084162e57f926773563c555aa09c8dad21692c1116bda6d1258a4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM6N21487415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2300be11f9624d7267b7f9c6e601ca3448703c0bdbc7f8932af2fb552c384e3d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:44:39Z), 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/QM6P41457248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94ded11fd781cc16834c5ffbca7aa167d7f5cb01cd9c78b73e7b5d382098265. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM6N21542856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d908a3cd6d22b5a35efe5ce71a82d525661560ba262c8c5fc55be7d4656263c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6N21593382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa52634b854502256423b9acdb8bf5fceb1a7f7b8ae27b0b96762ea65a8d68bf. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T21:57:29Z), 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/QM6N21545058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ea97d5b333f6b07671e92ae687c613ffc59f0f1bcd1806dafe1ccaef2466e5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:45:14Z), 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/GBMNA1680055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53909c29cb4806df10bbdb63a4ce696b854840f422b396d363f206be0085c82a. 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/GBMNA1700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c88706e3609b47cbdb1b2bbf19ad524e52fd8b19fcadb02d4ad3a6c0ccea9d. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/GBMNA1780245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7318a9d43eb9109b57b0dddccb00e8538dced31497d7b48eb99e893c15b8aff. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMNA1780248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f995ce55349dfee84b9be3432a2161383bd137c0f98abdc4a542e2b03817e8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBMNA1780303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ca3e036e663f18a1982cb00b1d39328b3efbe50b420f06694e3f5863e0c0c9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMNA1780304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3079e73492c1faa02ce1a422635d0559128fe55e8fa50248d53ed3f44f81ecfe. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/GBMNA1781318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd52faa670e357516e8e7169f10fc605e8bc63fccff5bf73dfe4d2b8574e63b. 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/GBMNA1781325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56d73f57c8e46256ec2ab03fefbf608a1b76b237c7d5d9b088e92053e94f70f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBMNA1782204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b6a7d183592f3cd98a050379157dc0cf99166809dc2621eeb4cd6899bc349e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBMNA1810923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428722be2408bad6acd082baeafa888f30201d3819bb7902ce1a97cb16c25f5f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBMNA2000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3de8065733f7b3dc7109e9a243e8d792fbed0f552383ec131b362ea02e1b502. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBMNA2001255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186b849269f2de62b295fbc424367a009357a15a0070064dac96bbc361a31d91. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:02:48Z), 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/GBMNA2003341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508d61e384179c7bf532f304712a78ee0c41133f0d3d132dffa7eaf9953daaba. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBMNA2100461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9846e176aceb451046f264ebf37d41281fd7a12df36f0bfc68a29aa9189b675f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBMNA2100958.