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 0xc8b8c1ec821ffa245b1934f652a932a2ee0432cb07cc47c8398fd90f82dc9e00. 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/248a9099-6052-4fc6-8ae1-c039daffa91d.json and https://artists.proofprofile.net/proofs/artist/248a9099-6052-4fc6-8ae1-c039daffa91d.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 0x3b4d1c546fe1ad6da66e1340a32d7600c20ed66139af0e1ecdf645daa6d3b21b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBSMU7281019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826944caadac9fffcdd66434c4246daa41b73fd13fafe11b8c42607fc620856e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBSMU7281021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc155bac51ea8ca0024fdb988ceb363e875caf215f9557047070e5b634d78198. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBSMU7281022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315c78a1527fca8b18c1d96e17a972722846f5baa801ca985693a210394fe914. 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/GBSMU7281024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbe295f8b9d8885a6c7bed822761f5cffc51d98aa2d390429009502b413bace. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/GBSMU7281026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54dc3bfda9dfbe5586c0de5591d6e57f78cc65a1830ee746397a92d26957162. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GBSMU7281031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db3ce2e45cbd2962749c85595d2ee4dd08d1027637a60bd6e44dfb784fba9a6. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/GBSMU7281035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5024f2efa6a1ec39a0a382d20b910f4e7212546806f068a967e174c016ea2a68. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:49:38Z), 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/GBSMU7281036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9008b2ac94be1dbe2f6b65bee833c1c81188ad6467a09de3093ee513662fa245. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:12:06Z), 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/GBSMU7357297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a88a1de39e25da917b4dd50ffaf7a34ac0f65a29e0d596173a9cd124297369. 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/GBSMU7357298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7b63a589f3a7e25dd08560ca94f15566ea3640eba345f724ba6964c63b1626. 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/GBSMU7357299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc139f37db73ff013ae59fa91b09857a2bfe4c2431df3a82a65cb4baf3c9bb0fe. 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/GBSMU7357300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ae57606e3271d877e7ef3c965e97b67e16abb967d5d3e4c61c7069dc9a8be2. 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/GBSMU7357301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8879ec6b17ae17f47a1f0cd6f43e4c070cdc8ee8cdbced49ff4a0802615377. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:29:31Z), 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/GBSMU7357302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04ff4b3aac070474ea8f869b758f0c5648f4375051fb72266cb41f24924a33d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBSMU7357304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54d870d89f96af27223955ba806120c010101b1c587f4230c48eb1ef2c74f90. 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/GBSMU7357305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aea0d3c890aaee328569b8bf3e296dda087866e6372a4e3f601cf86a6c7598f. 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/GBSMU7357306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a393f854a6cc6313b49aed1eec8cc17364d673edf66985dd4359cb21a58854. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:06:18Z), 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/GBSMU7357307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dfc9ffda6c0efb14e506a395f5bab062751e275a4f7a4fe745ff912a953b9a. 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/GBSMU7357308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ce9199abca8eff99417aa5090ef1fc49be3595c9864533d7165f3aa695d73d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBSMU7448213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e708f0fe0f386b6fdbbc5de9cdeb6f9c9f922a33d1a259eb8ef4db778aa3787. 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/GBSMU7448214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b30f20e4162352dbac424cca581cf3b1230b822022a8b9762f2a00e2f0e6f8. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GBSMU7448215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60ec192eaaa761be96f3746e714f418a1897c4f42070ead05f513786382328b. 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/GBSMU7448216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45c85d15240d018bad236f3d131363655a39dc8f325f4fd46286b7c345022e6. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBSMU7448217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397212b7bcb9eed686023fa1d28ec8c7ca2e76bac6169d73d6920a468cc07701. 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/GBSMU7448218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5294bb462e2f7ce857117093f82eee5938613a45d4627c549ea4e55080a4ec. 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/GBSMU7448219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03aa5b46201a5dbdb5ebccaa9aed938e44a573494bf51a8218ebed0cddda099. 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/GBSMU7448220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e48aac810aad48a4b773f7c6be94e62ba669a64f3e54ea2541df5602890e60. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:03:08Z), 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/GBSMU7448221.