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 0x8614c6c6e2b7de77826ddcc87ecf33e2ce0e796c3fa1cdd0a2e91739a73ccaa6. 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/bff71f7e-baea-4adf-99b1-5ee427e0ec35.json and https://artists.proofprofile.net/proofs/artist/bff71f7e-baea-4adf-99b1-5ee427e0ec35.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 0xdb0e46961b1c7e1c64ccf9ce191b33b3266e1a88b331f274f7d39eff1af77cda. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZHNB2518154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45501f0f3f19e223f694aa9125e4571531ef4793c0bc330e1d1dd8bf6f1bedac. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZHNB2518156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0719ae4e7d8f3c694d736bc39c10aa8e73a2b72b6b067f1a4a91aaec05775f95. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:53Z), 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/QZHNB2518160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669280f7622858bff5283bc4024a60f5b52c6d4ef588dcb72e6bfd5c6b33dd6b. 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/QZHNB2518163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fd64a61becff993123b3d59376b80671b5562ed91d7f7d1551bfc2d35c60ca. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:11:59Z), 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/QZHNB2518165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fb166973d470c45c0c090fec55598192bc33a9527c3821cad444b3780f239a. 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/QZHNB2518170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d62ab87fde24fd2b3204935fd5fbc87ebd507b52f0cbb67830c15e165613404. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZK6M2563359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cea4b69704fb943f5aa2e169cab11750a690f1e057e7a9a1421a18ff42feb9. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZMEM2300469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f46cd523dbea0a41fd997ef879cc774db65da88f080375bf89e92c75b7f9de7. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:19:16Z), 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/QZZ7U2463395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b90aa8989a92b291e494a38be954ae5c9efaf6c678f5dc8c7d12abd09d03b6. 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/QZZ7U2463396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79cbe09123b36d3b3a0556fe42d4e2c6cbdb8dddbc1f66c0589215ef6561995. 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/QZZ7U2463397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efdf3b19217d9092b95f9fffa89c3f26e2dbd4c7b8ac8ec38389c6fb871755b. 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/QZZ7U2463398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13cfab9171d1d2e926b9b608d023675b49f62924a682a7d9f2635a959a5012c. 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/QZZ7U2463399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7515475a40ddfbb31544da1f14a1f4b7835eb6963165d09f6a7746df51ed1d4b. 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/QZZ7U2463400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea09f4176a29a567a253200b5f4f4a9494e86793ba5b9bc7cd21b62d6f52a9c2. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZZ7U2463401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390e07dc8b10aff92436c64a954b5e9e9ae054014cd82e0ccdba9cd561d3c209. 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/QZZ7U2463403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d068b89a1710d4dc9b228ac4966f5b1bc94c4c982b82984530e79ba362019e. 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/QZZ7U2463404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083b51dc4d346030fe19039cade43c266e56d30d7602753ad207d3fd848e638e. 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/QZZ7U2463405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b4edbaaf5e0f4d6c341598b1c5e54f3b0a42a9549eb3d186c1c6d71e83dca0. 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/QZZ7U2463406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf7faab670aefb85bd3130a2103db3050b0007efd9c967914251c9b3522ec34. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZZ7U2463407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6262271e3512ec500423a4cc99dedb4ad7b2a7296eea2c83b68f38e6432917ac. 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/QZZ7U2463409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf008c1f4b4366a3836a9fb8af16f6b52a30843af6e7600c428a2aa621c60449. 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/QZZ7U2463410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870c16fb2ee9ea42465794f514b59f29c898fbd414ce504e16b48db0bfe5be15. 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/QZZ7U2463411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe451d5e230f4900a0d4067cd4228dd3e50bb0b0534880659b618d591a3ab4419. 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/QZZ7U2463412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe482a49adb29d11e7c350ab75b75705ad0f566930b8e648f3f8de9f116d86b9b. 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/QZZ7U2463413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618fddfd92a76a0d8968a4b4cb31754fd32089169deee67a3cee617936cc63e6. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:07:35Z), 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/QZZ7U2463414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3899d2b457d55b245b319e7edfc3d3154ec7ed92595a827d7bf746f80eea7222. 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/QZZ7U2463415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c263cdb3b92610360b57f6f6d358a4c3da15861c6d247370daa5581cd31a89. 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/QZZ7U2463416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694546e929b96452672f74f168b0bc478e4d9f50c79aafc5f923d164cc2ca4c2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWT2553083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146213b573a3fad503be76219289fabf5005ac32d033d9e7802de2687b6974f9. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZNWT2553084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc34f49612dd568c6d0d434d07c851c22f59525a84cf2d3acb0bd4b12f3f3bd2. 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/QZNWW2572723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c93fae52d10e1fa247be5ebfe5d3acb06e30c7bc0f400a15c78f54a2ea1b54d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNWW2572724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e194b6ddf1a6dbcb81b35168c512c1b70a1fb1ad7f1a34ff3bccd626231e951. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:10:11Z), 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/QZZ7R2506323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51b810470b9f77085ec7e881f1d6c960b63586d0b10162f6366ec33b4827c71. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7R2506324.