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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 0x52ee997557461f5bb16a3b22d3b491830469942e264eec7bdfb57e63815501a2. 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/c566bb44-4a49-4097-85fe-0283bc605d9f.json and https://artists.proofprofile.net/proofs/artist/c566bb44-4a49-4097-85fe-0283bc605d9f.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 0x1694ad4fad52773228639d65d4d5fc33f5911196b7c4833259242ff155b654df. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEKA11600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13a584dc4a7c38f73d3dc607f2e0f5d78e4b87e6ccf46b2e585f9ef3361583c. 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/DEKA11600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f12a15d057af586c23d9d22b28f7d0329ae845b3c95bb3944a1b253e37c5aa3. 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/DEKA11600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b0302e461c2692987696b4ef51204dda6860376743cf9f2ddb0494404c7d0c. 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/DEKA11700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cb937b36a104ea82140148188871ebb668b3ee0da03008f3cf63c68c708218. 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/DEKA11700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80e722ec5534a727400ece9790a51e02ccdf62e3ddd06273524a6cabc5159b6. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DEKA11700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae76f3de3e63030a4435c7eaff9e4cc0a102562c5f7f4b219d9b4e7d09350fdb. 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/DEKA11700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205fac9be697e906a2866f615136d07f525a10027acefe0b16f8ea3ab9831aaf. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DERK41900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c95b4013c8b3e6563f24282a648e23b157bad8c4bf48f88e9bb85d95391bb9. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DERK41900128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b59bd93765dbf54c4ea2c17ac90e5b41ebc062adca6b6f9d308b0ad75e9512. 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/DERK41900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf204712b173acc5c16dd1e3800b1166cd15e3944685fcf3f24d941ca420aec52. 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/DEKA11900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dab71b98494d88000c0366f3d254b67fe522c237c0f6ca074fb91b6ef61c00. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:29:17Z), 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/DERK41900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf38f2dbb00810c3c00be9366e7d10c6d9cc47ace1fac72bb22d2f3ab01811d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DERK42000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ba1fa9477f3d2b6b2c8e3da501bc54df89bce12930c1264faa3c8768a18c2c. 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/DERK42100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444b4877bacbc9bf9b8645322d970b6c403c86de91e98db2d8d0b1e5fae5ddc4. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DERK42200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956254eddb9d9a8675776dce3a569c438fe8aa088c7a7a50795943cbccc32ef5. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM6P42460643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d5fb1d6efc5f5dda77b05c1ea74b3d9dd9d4edf3d357a86f5eb5e32f1921c2. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:35:57Z), 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/QM6P42460644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32660a0eb425b6f8389b170260b20e6e97851dbf893896abe308615dd96339bb. 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/QM6P42460645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3e2ac8cf2f5b4f9a397e51a72a57fc633dc9e5622866e6a192aafd62a55af8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM6P42460648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943a062eb92ff760a07a5d4d4292b1693135d3ea5a559ee6fd6a9e185020222c. 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/QM6P42460649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98072dc2147ef30512df5eac480b9dec2e7dabf483d413a2aad8c7f487b83b4c. 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/QM6P42460650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c8ca517d167c0b2618d7ccd28b81b0cddad3d05d6aae1ae4efc4a6d34e7ad8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:51:46Z), 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/QM6P42460653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53dc454c2b7577a6ded343a8a751df62b734c99092ad04407a89f9fe050f456. 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/QM6P42460654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d09efff98a95c943d28d4ec24074191d4514af76ed20543bab7ae052fb5c20. 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/QM6P42460661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82ffa992fb50b2a924d93a4c97e529dd3dd9f5d6fc9bd51711d56c6b8814978. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QM6P42460666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35c02b5e2d0f3b2f3a96e5b7f08a80519101b68c6e6b8bf7404c65ebb0f3fe6. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QM6P42460668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72420cb42ec43c9e6cc884904553f4e9d8421d8b06d143f5c91eff16dea8745e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM6P42460673.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbaa4d5e72818bceff31104fbd9cc52b99996a1ea803dcced5484b0587a068d. 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/QM6P42460676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc6300205704263c20d02f795ddaae418ea2057bf5883cff7240ac50270c6c1. 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/QM6P42460678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967186a252fbc87f383e87a057178c13308cec7d8a58c184cf79dcc6e7b4d95d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:57:30Z), 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/QM6P42460694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf85a5ded3b308663dc757c412250be24201a40558c78a701183f82d11fe69b. 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/QM6P42460699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fded7d39cc2990426add33eb5ab3f8014e544a176f949959395f793bfc0a0e1. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:28:49Z), 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/DEXO52434251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e084f42c6bcbed6186ea109cb70e621309f6fe6e02179bf59ed3c6cacca649b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEXO52434254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a1ca61bbd1d543a534e96905481e03c685679f696b085fc8ef963e35085d69. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DECE72200903.