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 0x4adfcb5ec68a83c06ca36e08c89aad60390bb140e1ee2578fc411b158c378794. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96113ba9-5f23-4d10-b6c0-6ce7d0024ff3.json and https://artists.proofprofile.net/proofs/artist/96113ba9-5f23-4d10-b6c0-6ce7d0024ff3.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 0x1eda8ff3c0301a09cbbcb18f753573a2e98598d15621ce59ca453c05af17b96e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM42K2306313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5460b3a785d0d42cc0e32892aadb1d04551f8ab77012020f9661e7f4b077aa4. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZMHM2385133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd223cba236d6bb92076528b06f61b981b6eb13d55b6707db79f28a4139f151. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T11:34:29Z), 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/QZMHP2312392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e27e416cd4c48ef549778a8468ece54a3d1c9032fceb767e8b7c29687690d2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZS662284352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1223dd2caf554e6de41f0b3d3b230a1c0607b60cbe59b7a4016dab594cc0c468. 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/QZS642562882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978f104b46ec0499ad6003051e9822b1fdd9e18153cccd14692dd40f224a0433. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZS642552346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395288380f39183efc851d6cb0d392c09a39cf3e1be50ededb5758dd2954d9af. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMHM2561687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb6d13a995dac518e2d736e2db38c919228bcde11dd34d3eda080afdfc619b6. 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/QZMHP2506019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec3b0cc36105418d1a31d94b9db9c4db429e7408696110de527b988b4521a61. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:29:22Z), 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/QM42K2508542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70af0671e57c023f18e5ebf847a4c0ee5f60bdd862a875550d76cb1bf09c3391. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZKDK2568595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87a7dece48e4f738dffbea9f330957c393ca7e5636ffa86a14742445f5cf563. 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/QZJRB2523877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba3e100a27f6a1da33bbc1648bcb61b19aae69c6930b30a19d20db79c90971e. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZS652569722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc067b3cc79fa12ae0e0d19b383e4f357a4df62a1a769ddcf8c87cf84f20262b7. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZJRB2560712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1b0c0f18e11aa4de85d9c2821efb8165f35db5340b2f28b95e1d0b55118cbb. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZHPJ2596075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4af17ab24eeef382dc7070e766171acc1a21e9d792dd1f1564ec571e82c5091. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:36:50Z), 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/QZS662504114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0461dfc49c09af01d4278725f049edb6294f53adbf1d5b39ac5737a5a35593e8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZKDK2512650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9903b80437f2544d439b86f59a17a10db9eb3f6da628a6c36cfdf10b723c63. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZS652520719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a16bddafc3b58cd9f8c7382fb7f34600684f4913d9aeca8c7ab45bbf821cbd4. 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/QZS662519601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b6f8224abe8e25f451ceaa59f9ef6e05c615fd416c41fa203f7000acd9c02d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZS672512762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47704bafffe5770fe563c4917dcbf8d18f6a72e7e8f58c830057105f52c5a751. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZS662555931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29b3e6346c25af786281dde499c6484816e4511b24ca2e894ab987025767c92. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHZD2567093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a6fcbdb62c23c887f65d8e4bc70c95a0f4aa71c37ff5095d2ad3cd558437e4. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:30:17Z), 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/QZMHM2523467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe634399b4791212e08f56214ef5c51e61f2cfbe5a2e9e46a650c686396654421. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHZD2547271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0b03e1af8ec89d2cdbc9725b159ee31d3d4a45c0e861f47a9eb28f7c3bcac9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZKDK2544128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645b9d1fc908e7234855f4d6179de4e32bd44426554bbe53c0b8252cefe50721. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZS672513279.