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 0x82a5613f05b82fa456d0bb88971e1c664eb7ca7958b86002d34cd8517dd6ec2a. 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/96e4f42e-6887-4b8d-95d2-daf6365e39e3.json and https://artists.proofprofile.net/proofs/artist/96e4f42e-6887-4b8d-95d2-daf6365e39e3.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 0x600a9dde8df904ed0c564a9fb60eaaf486327db8704a4e725db3a26a1f50c3e7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB2LD2210146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bd37cf7d7bcfb4a45fc7544ee528be52ea70ba969bbc0d46829983534c37d6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2234086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b15528b921a712c0e13bd523653f865e6737291dc7e039310f7d40452aa9701. 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/CA5KR2442891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc960d60d7c592ba899073560255a05d26e5ea35880d4a6a4f8da7a06f14e3b. 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/QZS642332246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b16ff344762161046d156900ab296d8e7ffa01f4fbd702fefe744a24766196. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM42K2350050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606501566c4453cabea624edca1bb757e22899285fe46dd31d987a11d7e28ea6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB8KE2302195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283d0ee1c0a043f97f5a62b33cf482e663d6da8c19b49db86f886df5e19ebaeb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2319685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6957e6cee8b865d800dfd0621b23f5267942ccb6f6031277aec78856e1b723. 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/NLBW52100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252834b740f88c4f8201a9c1a7409c39eedfc2904e5089f43195b2b4dd2da5f8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRR642100413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa2dee2e443bd92291359636e6675cd4caab39951638f738c602cc8f4d146f0. 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/GB2LD2010303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55e8e5fae4063600fbd8bfe965cd9cc511f8c0574470e2b923809c5f90a1c16. 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/CH6541633710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced15a0d6a04c02474da9ada00f6261f4c3855e3d2e80faa73ecc307be35be00. 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/GBSMU8181022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc357009b9d4667a4bd9424cd5ff38c56d19e76c945d5bc034300ffcf20ade01f. 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/GBSMU8181023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdda08e14717b67606f725e1dd8dab4abde98a6521e3b7573c5123d742a64d7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTPX2402705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac645bd4652e2857a7feb20b4771424c162e2cd305d72d6a4e38cb41fe4c10f4. 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/CA5KR2296415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671020b03e247a5f9f0d880670ad0a436a421b9136a7e2830c5c9e15614b6589. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2296412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e47c5499e5ffa0d59654f9b812405b3eb4c21bfc76d321b213a0e1565a7c68. 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/CA5KR2296405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66fbd710c6845405feddd68d52d4356a14aa1b3b02687aefce2aa940d6c916f. 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/CA5KR2296413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857cc8333965589e6ba155e452b84868e97de31c9ae49e1391dab5e2d8fef8a2. 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/CA5KR2297449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b15528b921a712c0e13bd523653f865e6737291dc7e039310f7d40452aa9701. 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/CA5KR2442891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad8b8532d5e73a3ff11303a4df87970bd68e16e706c476598685f845dea5b49. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR2442892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93517ca1b32f65dff7c11f1fcc5da001e31b03e3e1b01bb317162bd07f2c275. 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/CH6542005125.