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 0x3eb68c3ca0d298d3cc673c34a6ee2c2fb75939bb1849eb3a35bd275f9644d81d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/185d3eed-ecd2-4300-b1dc-d6589893b594.json and https://artists.proofprofile.net/proofs/artist/185d3eed-ecd2-4300-b1dc-d6589893b594.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 0xf520d8b469e84f6ccc6ac277b2291f130ca337c4d0f7810b468920fc79a0e9c6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEYX82159089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef7f36be29007bd36f396fd18d0f89c0c4ce3098b02f3dda40d58d5e4493b9d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:40:32Z), 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/CH6541610545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a8e0558cc3e378442c6da62c5530111fa0dd2a42c6b550c0039061ea8d9276. 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/CH6541610557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7398947335653a5b4f9037f304d8550c5ad61166d9cfb8e9fc25463328b9dd6f. 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/DEPU31806276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c26a89d73efe86a3e285a39f015b19c4093fc274cdea839de29150d9fb9ccd. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEPU31806279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f770802dbfecc90b8b3f3034f6f559267b51f2d034e473476e76a4baca5da7. 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/DEPU31806280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f0b3f5e3c4bbedce11237978704011f0dc0fd96e2627fa9d789a4258da6707. 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/DEPU31806291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9362ea26e6d6e0e1c9dd6c56755c6ee6c849778e2793e0c20f3dff7f336d0f. 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/CH6542042541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a116cffd0d944631cc648d759b0cb008759ce85136f761d1e29601be23d3bb3. 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/CH6541641751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc70f62b5e4eeb1b747488bc8621ad622f189ac0d251219fd11555966035095. 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/CH6541650382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4954a1d91df31c8618273d16c5ec2c120f4b3fc0d0ae7a339cc635c1a3ebebe0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH6541641803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0fe5a0bb998008f240426877920f81fd9fe257cd94b8ce58800afc98564c41. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/CH6542218100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca6d23c714d2c84ed0474cf0dacd10321451deef7e6524bc8085f673dce7dc1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CH6542218103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84374d2673f1ac04841e737ebb34b789f0a07d6da788a740521095db52db2423. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/CH6542218105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11c6de1d13ff06f4a431dd747481f05d668faca64f75e0fbc24c29c870c3f0e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:09:35Z), 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/CH6542218101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef0dabfd11acb39693af8185293fb7c0e0dfd116480f5d8e2fda479618f2287. 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/CH6542218098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e77bfc60fd0e2be14514fc2cff7b4059bd5241276f994966bd350098091ff8b. 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/CH6542218091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478d7ff2e09364af299fe173077919d2e40681b1e0f59eabbdaf765b16e8aac9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CH6542218111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6d42d8f7823c32fd62553949bdd8f1741ef718abcac3eeded858f3bb887826. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/DEYX82160817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6ad34d0ecf624bdf87bb1b86c66e862710da1f4b97d0606a5b98b9940c484b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:36:24Z), 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/DEYX82160826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d62475529e88dca5e94e92ce0d065d15610128c480f7f26c9b1a17ead22a41. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEYX82180655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a9dc243462f6e8dd1f1e76e53fab5e0495eed8d2c419fe439fad80e6a2582b. 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/CH6542411901.
Bunt ist viel schöner als braun (Der Vielfaltsong)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6815ea7a5af048103d6c4958d07d0b590d02b995f00c92316cad79177feb5a8. 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/CH6542411903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca912ced101e971af3181f1272462bf2a907efc5467526850355104a771aa50b. 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/DEA472402527.
Tragt in die Welt nun ein Licht (Cover Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebeaaf0c4177bb4d15f2cb5d6d1e0984b5fc247c998a516628dfc4c968aaf2c1. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEA472405558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd8133df7e47b035125b79374ad2d4a3c06e26531620312bbc6c2fa632119b3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CH6542482163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed0b9eeb0f6e1650604a18a60c4750a0d68f0b58422228f8a5acc21a3ffe46e. 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/CH6542510563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17a94427491575cff035f98a4a98b92dacfffd09172a2ec89e4adaf4004f14f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CH6542585643.