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 0xb0dd9ff734035dd6f9934cfdf80192c942e6c6c50349613cbfb6a05e8e6d0076. 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/76b645eb-4fc4-4da3-a19d-be196d846ec6.json and https://artists.proofprofile.net/proofs/artist/76b645eb-4fc4-4da3-a19d-be196d846ec6.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 0x0f157f2d24aaec90d286c9707990eebf28950c2d62b2e5b25e45ffe2e23a5b37. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:25:28Z), 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/QM3DF2177604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d6d8ffed9076930db2d4a26fdb5d4d2b2b71621c7790bd229e045f2d41c0c3. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:31:25Z), 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/QM3DF2179541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff7305b280dcfc56e6976e1fd25854f020ea89a271edcdd65a52a8fd95e73d4. 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/DGA082214871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeafb94c72f2c25eb45c43378fd07a783210618c74ac9398429c91964b15f927. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZFZ62329754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82e5831c22fdb7a727e4d0d4de92e8a889e2402962b1c70ee93f332efd55e6b. 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/TCAHI2361788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd35ddda653265674006783ad972fba2b4a734bfe843b45afc9ff52e436b0050. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTB32382816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998febaf38c168e27f6d99ab754a5144447df21fa948661e92bc185db252628d. 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/QZTB32387640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4168396a1cdee257ccab71cf8f2042db81364002f264ae5d030c65f7b62da587. 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/QZTB32386407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c1c2aa3f65bc9fbe367d9b8326f5efcc8d7838ebeb8364b42eb0a53ec4aa87. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZTB32382814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ea818d83872a30f726ebbdaaf564385f25bf544a62404afa5ac64f14473f58. 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/QZTB42336461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ce9c7a164d52728b6ec2c01ff3291b1a2fdc0d16356532d9f35a1ffd328e43. 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/TCAHP2365919.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4652c7bfdab8b90c3912798606038bde436baebddf1da0fa3f801203881fb2b0. 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/QZWFE2325996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4deab7c65f1b670492007e34650489e313d48993413d9fc82ed2e82dd29517e7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFH2325201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27fae47ae91f1509da74f38885f87dc9eee0c94ad3c050101d70e669723c79e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ72473991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27fae47ae91f1509da74f38885f87dc9eee0c94ad3c050101d70e669723c79e. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:39:27Z), 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/QZFZ72473991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f0072b113f095d5beaeb38f483d1605126a1d2e3a5b1a60afba6813ec5b72b. 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/PKA062441447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f841117b032c75fbd52472a310d49be17cd19c57b7f42fa9b2850e126e1b870. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:01:20Z), 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/PKA062441448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193153f03cd4d3f496ede402c7eceae883aa8007ba02d2988b9b375eed820c3a. 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/QZES62469931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193153f03cd4d3f496ede402c7eceae883aa8007ba02d2988b9b375eed820c3a. 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/QZES62469931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193153f03cd4d3f496ede402c7eceae883aa8007ba02d2988b9b375eed820c3a. 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/QZES62469931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73fdf6a617cdf6a1aa355d72e15e0d94f3b18ff9dc3632de58f2bbed0be1ff9. 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/GXD7G2410493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528f7f3be3425bf7206a2a5b7c5ac2e4818ebae3af43cf1af0e8ee959024d450. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AEA3A2498110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f10311e024a1bdf8b08c28d030e6583462d7dec4562ea094b9ddf8150dd08c. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/TCAIY2408645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cc5cd953b2cc2507c17d80f077f718d395db6f95ac351cd962eed354e8498a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SGW502273319.