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 0x971a3b611f832761af58211c706dcffe433fbaf93537be5f3f345e4babdad474. 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/acfaae94-114a-457f-ac57-945a9807703a.json and https://artists.proofprofile.net/proofs/artist/acfaae94-114a-457f-ac57-945a9807703a.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 0x013711df55e3bc8de3285a294e5591cdc91e1c67c5c2810725382951e31ba0ad. 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/QZTB42334791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd91f15bfdba711069fe21be123bb6b434df25942f667e526f4b00df8fd37195. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:28:28Z), 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/QZTB42334790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54e574075ea6ae5de2215a7c59213b2b3c3b7a79167b5d0b3bd22250dfb4f38. 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/QZTB42334789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5b8613674698f7ae5f8078bfcf3b3306e035318bfd95c4dfe3ecf32334afef. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:45:59Z), 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/QZTB42334788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409468a808517d117e153d65f65e373e34c94504b372903fc315f1d0686c284c. 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/QZTB42334787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ee5d4c8f863c62a07dea4f34e3a1c046a5e0219f89d1ec3acd9b9c3bfb2b44. 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/QZTB42334786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f98f5f595cea5e3dd0ccefcaa531cde7a0245e3e838ebd2d19e630fb210f6b. 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/QZTB42334785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c27e85306e9e75df44b5fa8a42c3ae301523d00f645c3be92d250e4584a941. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZTB42334784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764c51a1039491b1ad43250cda81a5c1d9986d0d839ea06249da244b4cbcecaf. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:00:46Z), 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/QZTB42331843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699e9891b328332ec81736c193bcbfe971a070f2e3a447db668a21fd8e9f67e6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:43Z), 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/QZTB42331844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851d847f5dcd92a5cf68fd4f1ad7d87a351ab2196f33fab7447d48c683c4bfb8. 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/QZTB42331845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea184e8a621b9c99c0c0e07782227d5ab2863a820bc049fa8d077ab807aec8a9. 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/QZTB42331848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca47b77ecd78de5446322d33c7780cc33d622bb67e2f28aa962537aed50746aa. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:34:48Z), 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/QZTB42331847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea9f290f2d022991fb5e27bad0b9aec74ed0d45b20e9ef46165cd7c44c9fe6e. 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/QZTB42331846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f4ed89420c91ad6988f4e85a8116767cd990cc6290b8d2de2f9ac713bb62a9. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:48:10Z), 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/QZTB42346539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7db1fc9e69235290eae803de181b1edd6f110fcb2473622f7b0df96d376688. 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/QZTB42346541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ed32e106add99f75bf1f5f12b12dbb284c0a0634516dcd64205199ceab423f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZTB42346545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2db09b2c5417df64bf32469c5202cce62b5b3945cbab35132e771d61c9626d. 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/QZTB42346543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c7d00d5075f8f94427d488dd592ba2cffe667faf2a9472569f0ae5cbc4705e. 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/QZTB42346546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eca04509f451ba2471eee020c09ae92da43deb31d2acbb73e7b95c6b674f4b. 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/QZTB42346544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2ebf33e7c732a299ce0361c27e7a3fc95de6c7a7570d1caef2b4911aa73be6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:24Z), 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/QZTB42346540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b77cf73122863570eca35c486e65cbee0e87941fcae3f37fc4c9169ba431839. 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/QZTB42346542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c58b5fce970bebecef458ca8117c2314c7f3ec51ef2c7792d7c066f8890be26. 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/QZMHN2426992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfeb8c7f3d0a97f162036b1278f558e61b0a8e8b24930f22d0967f346a63984. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:42Z), 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/QZMHP2480078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79c0a1669dd40e6ad7ee87b4bc584e6f80cffb4d4da2d2e259a91d03d44e510. 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/QZS662492670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f94470b13e7e1e5a239837fa32d94600f8426521d1c2a0d69d49b5898fc9538. 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/DEPI82500381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d7fd3ee16d650da63a95bf687ea0556ebf399e3e25be926162f1c1a90345d9. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:41:16Z), 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/DEPI82500375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefda0082863a16fe872a00a7632451b0623614ee64f23c5fcc42445759b54454. 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/DEPI82500383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622603dd8f9d8c9ed933d58e786ecd4d7554eb336cf6e31da77afc16696e9d90. 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/DEPI82500376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12af5d5670be352f19ffb868c0962a8a25d2ead2fe5b24adf348e1347267d016. 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/DEPI82500371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a52b4511c8837f6c3fd32858272ef24adbd3dbb937de53a1a4b6de8adbb7fe. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEPI82500380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14c0913ecf4626ddba9e3e2ecc2bc322808c67f19a64b62da07fa93ac7a0784. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEPI82500377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314cd5ebf3e3da6a7d38330f456524902a18a6bf41913d63719fb3103f06e123. 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/DEPI82500378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6610c1e047634784b84ab1797d2e577702edf12d4f8f5e1fa0ed02f753711f. 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/DEPI82500379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3a96387f60339a911415f97f225bab93075594a5e61e4bff4dccb051fd5a82. 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/DEPI82500374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c4bbee74a48abfe2ca62086a9f9b6bd60b7e1f8229c31c6fa602664a26f8a4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:15Z), 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/DEPI82500373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02cbcb89fbdebf3d5d5cac606e4af351cb74f329bbf4bfd6b83973c9c4c9432. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEPI82500382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e77e2dcc904e72060c4651ad6a864cec4bd79c7cf7f565c81eaf145967b0d9a. 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/DEPI82500372.