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 0x1e2e8f19f5084329e50d443430e60e82df80ad1c835b10e51950accf04b5c8a3. 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/309ed5e6-2339-4e0a-aa60-286eb6df890e.json and https://artists.proofprofile.net/proofs/artist/309ed5e6-2339-4e0a-aa60-286eb6df890e.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 0x60865a381595675c531107cadddced578b8ae2cceaad97f18df3e43d51fba9a9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:11:32Z), 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/BX44O2201577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d92c469657d9d7b45f88cd030ae0e09682dc6cd81f82012be66b6aec84995ab. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/BX44O2201576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd1f4b7b453ebf5965a7f074b2592a9352398a706ba1887dbd0e5dc9b2afe2a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BX44O2201573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c883c6372af0113dd496ea19476bd01e7bcc77c9e22d261bb6a00f87707ac90. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:41Z), 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/BR4TF2200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05e053a3c90fe81f87ecad5e81f4f9aa3609b4c9f8103c0f454e1e2e391eb56. 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/BR4TF2100440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf577f6fbe07a7e7ed69b7405948d29ccd0e110fa43ce9d8fa20827a53b0d6c11. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BR4TF2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc641cecb96c55356d19a2ec97d2ed74919fe25b0976616c2097735c87ef43c8. 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/BR4TF2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740ace4047630189d50d31a7d0d5820c6115055c16c5af216bcece5a16be649d. 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/BR4TF2100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd04c8203ec50c92a9dcbf7f4a9863939c80e24ecca64421852b97ab3c70cb52. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/BR4TF2100439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc93d9dc6cf85aa9f27aeaeb0492cdec2ab76321014fa73e4391e02ed151eec. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:51Z), 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/BR4TF2100857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a11ce37c0ea20a666af71980fa770fa9665f67efb3033bd4942f93f70d5a7c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BR4TF2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae945b3b1008618ed3209448d5f628e3cc1c1321c4da4dc7a798b4c594ea9b6a. 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/BX44O2201808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53b4d3f7f7bb27f93a90a37589d18143a28d84340910d5926dba80053e81759. 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/BX44O2201810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bc0c22fb526836c049ba83178b9391807448597fe9c744b29baf5f7c6c9248. 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/BX44O2201809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe188ff70e98ca3a2dc7717abc52594d98aa7f7ecc19cf40e6079d39c4009532d. 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/BX44O2201806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9770078c474834b2faa01aba3410903590f0c97571964773f9abcf8029b783d5. 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/BX4402201658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc09c8747e40741858983ce547efa9df28f0ade4331773bfc063aa80356fc1d. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/BX4402201656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b549681641a6165b4d1d88a7d4648d8c4d1b1ae54b5d33c9c246123ac4109e4. 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/BX44O2202197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217c9adc26b559f4580570d9b1ac31c372986a085b5e2c0a9e0dbda10ff61eb2. 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/BRYA52200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479a907f1690b24afb50173d93fe39c5133057e9e1d0263d6b11c2090db9e5e4. 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/BRYA52200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46da8235b1ccbdf68d73af4ab1a5650835a4822ab3bec4f52cf8ff7778df17b. 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/BR4TF2100338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59378c156ac85ca7231ad670db3adf3be7b7325501e3fba11ad7046117db23ed. 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/BX44O2201331.