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 0x3d847358467db5829abdc7e0b28a62c921ef7bb104e3b2835045ea9c4727b346. 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/f9ef3115-4353-4c0d-8b94-d03531a01693.json and https://artists.proofprofile.net/proofs/artist/f9ef3115-4353-4c0d-8b94-d03531a01693.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 0xaa94b67bd410d4329863d91bebd7eb62dc775b279999def7bfc6e7ea13bda949. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA51852652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f0febf7f13622aa25899ac78286e851170d77538467a1f169c784f09f16bd6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZDA51852653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4086bbc37d3b4481216519c35a4102e7b7a5a58b1d34b26cb45c9e31a1b918. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZDA51852661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8902611adf5273151fee6a9d648ee8881dffaae519f18a7643f442624c8f1df7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZ4JJ1908852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50fbfbe8669eb2d5aa5b1c2541db103765cf59fb6ace894df9c7614327e17bc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZ4JJ1908854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058dbb79962f685e208cd2738a6ef6c4e3501060f3c48522342119301580e88e. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:40Z), 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/QZ4JJ1908855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5678f2e5d728c6f7276d4c4b9bfb8560f4f8a5d017752af82eefc1b620295927. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZ4JJ1908856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6f47f71bd81b9c06fcb039a11174c26e7cfc484fed39e707e38b909316a0b3. 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/QZTB62249504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb246bbdc1d820b91eda6cefdf8e4559aa0a5c12ab6407d4fae41c81acfa1197. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZK6N2367623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6576c62a38212bbc5a479c8c0c7c2b0624fbb7f8dffdae89defbd9eee6dc920. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/QZK6P2367252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fc985f29c80db8fc3200ccc1ce15d42b9c4768edd275e394fd2beb999a4d59. 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/QZNWR2323927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81617e8c3c76ba876be23811f89c419d86ebd4da02772671e5164b7ca90fd89a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:46:21Z), 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/QZWFE2319180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91806390a669c5e4df47683deb3447dedfab44b99c4b81094227f7c2f5edcb6b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZWFE2368252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa003e41d1c4267c8cc87cd24ff8017e99b567be791e5160399029b1593bba89c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWFE2316155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8056fb920655849a0891ccb6b1adcd97e10872fded440bab4fe33dc344c57c0a. 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/QZFYY2432336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82babf37ad3ccdfa435066012834a861d685a2890c0e794d8f97f513e9d191b8. 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/QZTB52449168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c820f7fb2b52e295a665020025fc989f2221342f11dceb0e95bbb67c1c5438. 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/QZTBE2488706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014bc22bd918cf983c30a15d22cb11f6e479427c5741ef0908162996b121e435. 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/QZK6G2516548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9762c51c2f80c099e32d3246dfcb25fb265ca1ce4d13cb4712fcda6dac46bd52. 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/QZMEN2281417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586ad5880a4af98f6de5d119cb6aae10aca2c73ba01b52c3a1c3002c3ef7e824. 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/QZK6F2442741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee2a53f51003d6fd55fe9b8c4ab3892ea1b46ca2debb92eb6a75a337cf72b32. 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/QZMEP2307126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8af3bcb733c2cac3e601836e556d5935283aa38495c585b4d15db5576b4366. 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/QZTAY2262446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9762c51c2f80c099e32d3246dfcb25fb265ca1ce4d13cb4712fcda6dac46bd52. 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/QZMEN2281417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8b0f80e52d6c3fa9ca2e1360ef5e3bea354fbd52eaf03071d6a7cc3b27fd25. 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/QZHN72213812.