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 0x6509d9f277ec6e2ff0f3bb504c9df90218eaccbd6b5e20f4fc25280c9cc5f2a3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e029524-3a54-4776-9100-ef8d5a5c8a31.json and https://artists.proofprofile.net/proofs/artist/0e029524-3a54-4776-9100-ef8d5a5c8a31.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 0xe4882cdee3bd841512fea260c2328bd3262e58ae73c56c04a38845e7a0f2a76b. 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/SE6HN2472948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0e5e6855845ac1cf20f869b4cf12fed4c063e26cdc24c6568c5d87fb0fdfc6. 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/SE6TI2340244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4a736c0024b17b0556feaddd8ef83c50794a95e0484a3abfccbe8232343b76. 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/SE6HN2420338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3383c6497bc720dece275135d0f8c75557838481378d21e4155c4027db559521. 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/SE5752490291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88d6edf53760307307665d9dbc9776ba61f6ecb86f54de36a1709502f2ad07a. 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/SE5752459766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cced28eee7cce9f38a3956009127b118e5e54134f40d7f8bc93f4e6765b58a. 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/SE5BU2483594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9274181f483c5b50bf1395d1d3f6349118610a455a2296106ae93841f466288b. 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/SE6I32485552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8b20e189a5b64cd8b2b8476e3116874b30f2d1b77cdb94f2e18b09fce8e1c3. 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/SE62M2369371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b631ead164400eaac6bf012a3ed328887691310c7761b7630cff678505128e. 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/SE6XY2245218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47c8af63220cf1c67d4641124e293c224601eda75fad9b02e3f7a6120e4c651. 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/SE6SA2416423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aee44a0237aa0ffc6d7faccead1a47df36732e23b4718c5de46626398129a54. 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/SE6QE2462472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adb0dfbd562e1a82e392804949a3e88d67ae9036963d63f1611dc9e98b06ff9. 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/SE6QE2462473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e9b2d699b2a3508a1cf92c6fd2e292cb639086377638f6a4fe1d9e77ecdebd. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/SE6QE2462474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443afc1e0e56c878c8f138eb5aa7ff7e8c22fe7f1501971d15378a00ebb1a231. 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/SE6QE2462475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e629f729ba0263b94db4978f63b149ea1a4a1a209fa97d3ea4a9b4398c12ee3. 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/SE6QE2462476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca8bfad29de8d74405fccb48393124647d7213fa1df2755002633d641d1d1b7. 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/SE6I32472879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19be4cb7e9969a003f6e0240f0ee4045b8417b8a2e51a010b53fd80732c62503. 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/SE6QE2462477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d680c48f522c6c8fca623fbbb8253057e568a19c177d46e45e87ba307a7050d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:43:28Z), 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/SE5BU2533956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61895dc0da61a0371ebc17737d19edde53392968c611464d77776abec92a67c2. 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/SE6XW2407297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f00223b38e05ab0a525bc47ba741f9613593955c8fc764933ba2f54530291cd. 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/SE6SA2470597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f382da4203c68c6dd21b9d7f3c839670ef199c6590e8f47cc681ec9fb4bc021. 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/SE6QE2495303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca8bfad29de8d74405fccb48393124647d7213fa1df2755002633d641d1d1b7. 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/SE6I32472879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9b30ac0c827b54c56e5c4d7409fb4e2f13077a99446b4029d76471d3ae73a2. 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/SE6I32432123.