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 0xa504cccf7174f12608104192cfe9331f5491ff239060c2decd275a53a82052b3. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f745f67b-325c-487f-816c-ffe60acb59a5.json and https://artists.proofprofile.net/proofs/artist/f745f67b-325c-487f-816c-ffe60acb59a5.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 0x09582ba6b84e6dea3a3cc617e194e181542d2b40bbfd78b6d21dc90dcca56054. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7W2541290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa75760513bb07612a5a37e6376f0bfc0f7434629d20cb9a5b5cb318c1e5425. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7W2541291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887dd4b46ba20c01099934213296680bbf434f73994e2b4e36ebe62966cb7808. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7W2541292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8367b2ebc842038c217b774b1fc8dd266213e59183b1509271c666eeab64173c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7W2541293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60e866234edc52988af4bbabdffec17c18c59d7dd8c4174de308245fad47a61. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:41:58Z), 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/QZZ7W2541294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3e67f86fde036b4e6e9d8da22435d83b433d3353e0f0888b0fa104e584d3d1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7W2541295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb174a9e387088746f856206338ba4e37b136212215e0fc510f2615d20d4f5d09. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7W2541296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b4f2997fe261d60b45e57d6a54718924b2d0faf4a5a764760b508d16dac88f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ7W2541297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afb65ba9ca3c1d5102e6eb6927e882701cde2139ac974a9c4e0794e23d12361. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZZ7W2541298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36db257abaec8c760515f8cea68963c60901110cd39e23548e5a0b0c313f650f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7W2541299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167a3fb02197408cad32a07b53f436a58adb73771948c0f22c125eb8ec7d4b47. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7W2541300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011e8458f622eb837ea7426e56df9877a49b7c8442dc2931b1016e1da565aa03. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZZ7W2541301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbfa428907b6c953164e4729cb2d536db0d07330684031ad6dd599017d746ff. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ7W2541302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24c8ff69c79c7a95637628553d6bf4f40025cefb20647530e1943d7db60cdac. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7W2541303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e160b4591a803f45c5870e9b16c9e7a2a1b69549848dd138aea2c1563750853. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7W2541304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3d2e421aa17cb51f969d01ba7f09b533c4e19e024f0a1f3b48236637a9e8ab. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7W2541305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38fb53ce2a6eef9ffec5c8f628d639b581d792f6cb1a251ef2da98d9620e567. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7W2541306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626412c699eda42fde5189ead7e1037ac58250eae16f7163a2e214427e5e7ced. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ7W2541307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ee47cc6dbe89673ac90bf90d4ca971830cec21975eba6fc5263dd12c987216. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7W2541308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2dbb0366e3c314751de4c788f1f5132b64b5efface3e7269d0db34fc92c9a4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:27:44Z), 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/QZZ7W2541309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4fa2e09c75edf96aa86934c4878d2ab16da8aa4bd7bfc075f633a670b90e1f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZ7W2541310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b927487f4ea682c943a6e26e084a0e548ea2f83bc5f131f68fd0b93099b1d4e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:48Z), 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/QZZ7W2541311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bb30ee27460fbb471a5ba31dacfb60a5f2144c7058cb2f25e38da3f686e2c4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZZ7W2541312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a63a90fe7a9f6161e4032971046adc5fedbd649ede0979ef83225bb2659ff7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7W2541313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1065f7b18d558b9a86fde3ac16767222ccaee815ccc869c0a5965dc62541700b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZZ7W2541314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e74f78a09d45aac30e88a6a888b4e7104edb1defcf2356cc8aaf8403fd18abe. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ7W2541315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300596966951e169c917e70243e84b43daf48847c37130d9a31e6a79a82690ad. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:15:10Z), 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/QZZ7W2541316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a14d26856f4835f44bafa0bce716d08cfac8d96f06c112cf539fbc111a7778f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZ7W2541317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6bc94e7f47ead58c2f91fda2d9570f2b1a2a1b259bab5c7aea1db18b98bfff. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7W2541318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fddda2f4497e68f062a18352b5ba8875cabab8bf5bdce5c70fa0e4b27322c6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7W2541319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4840cbdbda5f24c7f4d2ba3e6b96c59ddfe6efaba6c85154e6542a9d2b200ae. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:15:05Z), 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/QZZ7W2541320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8ea5d17a257743d5ac3fcb97a4a28a3ea232a07cd51542cf94abb64fa3104a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZ7W2541321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307c7311aa7d8ff0e8ac4894af45bf0a28273e716c2e4517a8e8d948b1efd8a9. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZZ7W2541323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06254a5052082bf173d0a30d61b0b78f43c51294a9886d55e68672e623f329e1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZZ7W2541324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea577713fe0732e838256670fbe49e244b55d873d7a5f46260ed914a3c1879a7. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZZ7W2541325.