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 0x5629e6b3f4d01ce25182b588aecccf3f4e26f8f32b62c063203f8df08a68d5ed. 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/0ae4e818-e862-4416-9525-38f1dc6845c2.json and https://artists.proofprofile.net/proofs/artist/0ae4e818-e862-4416-9525-38f1dc6845c2.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 0xb9f56ac3934ca434789427ab0a85a8417849b797c74f7b7f372257223e4976a8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA41977921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7357799b16b62d369a70317fc6adf72f443604abc70855e895ab136c56b62d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZDA41977925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965c1e6cc6713f807fe44ef05215056ae1f4be21868a1d4908f50c58ca34fa30. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZDA41977926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6571923e4b630c481bf067f30b735fb38dbca74870d24cce7fae893a8c12d74c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA41977928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b8bdeed8f7b8011beef051196dca56df4b946fb27e1c5a8cfdaeeb05f55a0d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDA61980701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6005e10d1d45bed402a730209b968029499bbb99d4469b15ef08a584f74a5b9b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES81993801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e57820fc60d072c0925a0e4b8446938787689fbb40aa931f7eaf9bd7f9c189. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:30:03Z), 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/QZES81993804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c41a6e54b51487c997f4b9954af3051d78b41bfa1a08440dc7cbd86ce6c880d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZES81993985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f45dbbe63c0acb189b2407b17d1b2eea7282ea27ca429b8fe5910b2f3d20f1f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZES81993991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fcc3a66815a68e236d000d49cee08e7a291d7eb33236877769d7276c1064d1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES81993992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e6bfc9df4db1ef11a5b9595f0e524ab40fd7b329be1769b6f0f08e900e5b6b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES81993993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e010e4e3ad642b2e52aedf04bd2d4d21ebef5196b72c66dd087e41ff4aff502. 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/QZES81993997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532788c2c5e05ec20c31d0b9ae86dc6b160d43dd87a915fe3b186016dceb0ee7. 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/QZES81995526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf64eb94c1aaf741cccd0b5b5466eaa0487541470e434561022e3cec8b37615. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES81995534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127f8a833789a64dbf9badd0e2fc176d353dfb94bbbc00f24c92ba2675a40946. 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/QZES91947845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490a11503685729d02b25649125bc947906a8ccbd9deee964e379bf2607652c0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:38:32Z), 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/QZES91947853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c387b5cef444d4a1f4b58814887b0da136dd151e9c939b25899ee33de59a93. 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/QZES91951143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753948b3f48fbcad7eddc801bece254d33953232219e7adcbf1d14846ae941fd. 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/QZES91951149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc91c9d93208c93ee93ef607bbe8c186059eb63626337230d9dcefbb9d8b1c4. 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/QZES91951152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea8cf534fca25d791e25805ebcf885d7e9eca3c859e5a268b6a254366187cd1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES91951155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98e32d71b74d4f1918b3f1d2685d8ca593fdd172a006ec4c3ea88bb5d95346c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZES91950591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3fbb531eb7bc78b1de528dcf251b5afacd00afa2beb00b1379e355341fd166. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES91950592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d957606163b3db4fbd99a858cdded8d198cd5bfe57273eb244b3e23fe644cf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZES91950593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8312e8f3bbe7c969aed81cdae0e1acc164c0138d90fd68bc350f18cab9c4d4. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZFZ21965505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f342e237ed88ead817a04c18ccf524a45c96cc15207fc1e280162918732a6ed. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFZ21965512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7204630a0ed729308a8d92759391bef12c439b4ae3a0c57c150f2dcaa73078. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFZ21965513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da34d5aa227da9a0a94f4eac28798f09c933b4bf1764d7b6d60f645b2003a90. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZFZ21965515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82e84f07316e599b1d2eb5b7f072f9828bf9dd32a20fe99de48ec501cd1933f. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:35:22Z), 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/QZFZ21965518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb0f11bcc8ec243eaabb824272089b2da876a7a30ed2b6bfa569d902a92ffc8. 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/QZK6K2039611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479dec31bf756eee9e52459785adcae9cbf4137b63e9981e7b8ab73aa1620c7c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:14Z), 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/QZK6H2573185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ea88233968035eed599ee4f4938f0e151a7619140fc06ab0899ca6add5785f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ772558490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fca71cd7b9c52d7828777d851ab4292a44f20b41b83ba4efae141c9242e2a1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ772558491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4868e1d26949ef08012dc5ce49d18968c30d65622903f195f86d66ccf6ae61. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ772558492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479dec31bf756eee9e52459785adcae9cbf4137b63e9981e7b8ab73aa1620c7c. 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/QZK6H2573185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed31ae4aeca61c315f0d6fa2268b0c474cab8544c291240a711703f12e17f7b8. 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/QZZ772558494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40668b4d669dd030be05b7ffe7269723706e779c6d67ac99d2ab2ac6a4a864d3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZZ772558496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e4331ef71df46666cc6b96ac4bcfd7790738cb5d84519d587b9bcc0b905bba. 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/QZTB32563635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7931e8ac49269bee69c08f5fde4bbb10da1d84595c4874e233c52e2150499fac. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:27:08Z), 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/QZZ772558498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf05ea7f178887e8f3cb24fd14f5ecc2bb62bb3db7094d6be689fae86ba08168. 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/BRMKP0400924.