1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3712be6be062f9b198b61d9670d3f63b7a1f87c14fa53545953cee701bb6565d. 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/43bfa88b-4a0d-4e71-9e3c-4157c8f104e4.json and https://artists.proofprofile.net/proofs/artist/43bfa88b-4a0d-4e71-9e3c-4157c8f104e4.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 → block OTSBitcoinBlock must exist at that height 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 0x76a52873786d8a720d37489a901231fbe90351cf5dc989321da541ebaad12db8. 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/USL4R1903722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749fdbc7d084666441bc858cded662d9a8d88922a175eb95fa00da491f2b1e1c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFW2190343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ada5094e03956821b9865f7ec45011a0058facfa23a6fc9a577f7918f185840. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:49:59Z), 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/USCGH2254067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483ac36f4d6da6c5e7e8d1e184b8647fb3cc9aea73ecb994df7048c2c98b934a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAGH2269557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f14df78a10aadcd1cb8c584aed0234cd45e5de72fb8e8f52e62543a792b337. 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/TCAGH2269632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a501984708a0de60409229c2ecbe77baa9edff3ac16a47ec9fa52e00a927335. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/TCAGU2324708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258df845f510c201f572752d46bf54dd8ff7f5452e061a5d03fbb799c37e8d36. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:33:57Z), 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/TCAGZ2316910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c551b01c76912c14f1126466ddaffb49f03c4139cc89e5c823885f0c9d084d1. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:33:03Z), 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/TCAHA2326904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249e44c0f1b55391b7d4c2afd007fc4f3da94684426ad2ec2f422ee0ab4ce6f5. 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/TCAHI2399370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73db8fa943e11263a401c8e2a8237ffc5a039a5dffc22ec23c6d8b60d9faecc4. 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/TCAHY2418903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e6e9baca5fe5b9e98f3eac9fb2bf4e0d194e92e9debdb8f29000bebe3a1cdf. 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/TCAIJ2424063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4e26e228bc1276b90144ce78d38c6231d2879aac57296195ed68c8c7c266bc. 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/TCAFH2059852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c83d22c26a33224dbd9ca0ec4acb158bfef83ac68216ed0fc8b65b5bd6b90f1. 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/USA2P1305690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4098e436052158165eb397f89ef46a952ac224663ca34028fe0d462fa7486725. 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/USQY51529933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297427fdc5302a3a3c148f5f3fc82dcdaf6dff98f374ac50c835cbfde80a9630. 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/QZMEM2236363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652633a4afc701fe7114ed3c0d19fd2086ae6c01bd18418e0c84773d18dcb1f6. 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/QZN882222047.