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 0x489e4e58698045294965b8c3088d21f0ce32380255056bd228dd808bc77e778f. 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/c3b78994-d590-4657-9147-d198abba772d.json and https://artists.proofprofile.net/proofs/artist/c3b78994-d590-4657-9147-d198abba772d.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 0xbf23d03c12b8c17fc6774b8da18ef30415cc7a41d8274e17a4b6e3b765e5fdad. 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/SE6SA2099142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffde5f2c405e30a2f8fbe4728140dccc022e3419a7b8a35437d0f3bdb56add1a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:53:40Z), 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/SE5BU2167372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f74ee1b0ff7f41c0712c67e408471f380b21115413ad03e6dde1d7bd86ba214. 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/SE6A92139245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dda8118d5b4e70e26db26f208ed220af6c6e58908811b67071b6737821e55bb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/SE6XW2160512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76861ab9af1b6b2c665f1523193b14b89ce505973501094f6ef5915cac862f9. 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/SE5752223312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb79f4e5c0fdb0dfbb6d697422a40c3df3f99298e3914ea730490279a770a785. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:24:00Z), 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/SE6I32203680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b1cdc4bd798db44fea69cead3f616420e3e1cc098747a07a6b3a8af4682c58. 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/SE6SA2286210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f82f50d36bd86686b8e17a856047f97934b1df37630293e113a2ff2f48b34a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:24:15Z), 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/SE6XY2254624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50a4e22a977f6e822f7c8b4c48cb76586dc110f7dd03eff6fa0db1c5d852d52. 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/SE62M2246296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775eb0685b77c472238f05344af08a054930643b5abc8877f7886ceea00c05cd. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:45:10Z), 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/SE66N2253755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad45507b5f52d9851c19d8f547440c485f087f2ae36dd2afda55a64c356b7121. 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/SE5BU2367543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404bcedff4e11444ca2a2a600d84ffb104d48023ce8307835d4024f059194c90. 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/SE6HN2361568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf96be3d4ac6fac8a90baf5aa37db53c64b75fcfec7d7ca71fcd7c7a9dec8e19. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SE6QE2364890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf71729fc2c91b5e80c54b99c2feff9e2b4bed5e8b9799d7a5a8f1042f5629d9. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:27Z), 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/SE6XW2384893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf720b54df5156c80d16b358ce6fd727f01cb412eb5ac38372df6c6016ff45aad. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SE6SA2373329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf780c443d62138c1e50932b4a79c2d88cfeea9b19919db484fdbb56b8ac58272. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/SE6TI2336124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc0624d594ea5947eea70ab784fbd1f297c82b6cadfc632789a63d74abcbad0. 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/AUBEC2488010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10dd73b17ee432de60504a01431de77375d2956236acb6ff9859ae840c680f7. 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/SE6I32496629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198f99fc22c9ff5b2cebf6d10ec4b88419d08e9db05de4aa10218198fedc872b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:49:33Z), 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/SE5752484000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6368dca4abd9b97d973038786a69548b5e0cbda7b7991206859c41a855fc490. 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/SE6HN2469745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125eb7709cd4e8133644e9d7486b3bde13f1de5b05e6365f6d2ec7500118429f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:48:41Z), 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/SE6QE2471193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1139f04c1b66feac599f07993543327d96f1f34b3b13ae0c89c1a158445452e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/AUBEC2502608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9d20d580949e08dfb0bbc1d38633406ca59fcc8234ee20fe40201b349b9441. 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/AUBEC2552005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fe4be28716ffa740018a59e40832a74a36f631d57bacebff4981e162e8008e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GXHAF2529389.