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 0x1a220617dd921e6ea74db9e862c093ecc054ceccd1658d356642746cbaac2d65. 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/f0bd1b60-2d58-44c9-b71b-d09cd3b02912.json and https://artists.proofprofile.net/proofs/artist/f0bd1b60-2d58-44c9-b71b-d09cd3b02912.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 0x15bca155b4bd7a4059572cb6b706b0ddaad5cb86fb5f66c09f6182b63fae11db. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:06:40Z), 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/DEZB52310340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7ab3a0389d7a4c6ed106bf2e16c0380083456027c15a226d1f104ce91adeb3. 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/DEZB52310362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9376d3e2c193866e037baa5c507a2f01158ee2ce0b32259885f3ea545ca3b673. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:11Z), 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/DEZB52310342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaa13c938338d7ca26d03098da87b99ef8765b124731bb53ca4d587494a4153. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:32:12Z), 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/DEZB52310343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4205c802aa2eeef6b2bc5c57c4b2a324f768f098aceea4f53e09c186ffdf77. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:25:02Z), 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/DEZB52310344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eef46d3fc7a45411c583db90911ac6b32b6323cbf529053af8fff708b54988. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:46Z), 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/DEZB52310345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c926fa8fdec0771cb210fff191dda124da42b00f403a60c8577024aff80bde4. 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/DEZB52310346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b38fa2dc1704591cc11f8d1ff6b87cc4be8543778795e7a6105eda40272904. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:02:00Z), 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/DEZB52310347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47cfbc92faaa6dd82258195aec1840970cafd8dbc0c6de802554c7dfe9bee4e. 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/DEZB52310357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d692cde1baeee3633cd24d98ffe3bdbe84bbdd4600bd564153a1480cfea366f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:58Z), 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/DEZB52310358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4428be3d4d8b64af41ead9b7850844357479535a6d9e41ed584ae3415732fc. 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/DEZB52310350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efe72fe25b6bdb1fbaa38d4e9ae21e97ff614ef3e5f1c2f3dbb3645a0d4bdcb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:33:50Z), 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/DEZB52310361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab064862dac43b83da3493f002f5cfa7f48315b046f92dde5984a1c6758266e. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DEZB52310359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c51ae23189800d244b45cab7479af7c4553b3c7a84c0b9edd0481832ce7d3a. 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/DEZB52310353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0bc2e9d9c4d17e8be56f7a6db9c9f29fd85ba9abc390ce6921009dc456be90. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:21Z), 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/DEZB52310354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03bfc8e3044d6da8e02d4164e32a1baa17581112e7c6b18acc027d9918737f6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEZB52310355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb581a1ed31937bc427822c45152184a67b9be5852ff948c0b971243fc7eee52d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEZB52310356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fd8e952dcaa8d476930a4c02f0aaa7733391ce56da5bb700597c0409d1b6b5. 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/DEZB52310341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeceb552afb391c47274299e9aa3e9ef009235c246bf7662a7f40982d1dec8822. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:09Z), 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/DEZB52310360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593058888cedced8784930fa4f447dee9c43bfa3c0b6721cc8e025deb9c082c5. 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/DEZB52310348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bedebd2d70c21e127a9679cbcbbd5c35c31d0c7e502cf9bef4888e50b048d77. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DEZB52310349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3760c388ec6cc8ceb22118ed12255c502de1155e2f038071de85dd5fbe83fb. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEZB52310352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41357fdb73d6d273c2ed100965ed5531c1e8405067bf46ad2d4d5c04ae90dca7. 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/DEZB52310351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e256e5d02fe098ccefe3dae756520a287caae2bb1692cba5de6e6d8fb3e7db. 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/DEZB52310363.