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 0x566e8fd12009d69b872b73f2c98a48eb9af225e0d237d27abe4b42f9ba091d62. 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/0ae6fe42-3277-48a9-8513-19713d42b2d3.json and https://artists.proofprofile.net/proofs/artist/0ae6fe42-3277-48a9-8513-19713d42b2d3.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 0x97003552f4053b2761e759fc30d05cd584bdcb74cf44e9eb204cc4aeaa75a940. 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/QZWFE2430222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bdf79324fa1e5b1d24d562fad82223db3d152ab886022b2292079aae94a787. 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/QZWFE2430228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca856f570e558c85af9508bb8fe3b7f7a779c3a9d1f205e53c496610b1ac6c8f. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZWFS2453670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035486572210ba79e589c6234f95d93a9827d5670ab25d40812926149fa6a46e. 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/QZWFS2453671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207095b7b7bf380ccf1375f076d4f74ea34a53b62c4f0ec25bd4f433535388ea. 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/QZWFS2453673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f25943d98a9955086494711f38f81a1f58652cc009156fe7f3adf4596544c6. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZWFS2453675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464c86276ff5605364a9ce9b41dec8b830290f560eca0c7fd99bbbc022d3d6ef. 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/QZWFW2417114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdce0086307a590653d558e3b81bae72b4a3220a89d9c7fcdcc474c70ea2a8c. 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/QZZ772439361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e2af2dfc7f9706734cb0617348609b713ea3a52f4a25a5e329e2b61423f843. 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/QZZ772439362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927706de563d6968be81bbf611866bec18e24c1c0e9ebeb570bcd07a2597c759. 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/QZZ772439363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74471982b28e0afd89f56d11b2870d0741344065f4c83a5a609206622782ca44. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZZ772439364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb278a4a992b8e0e7bed0a9c289f62288b0a38078aa8418ba8c7d7acbf0ce2b2a. 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/QZZ792406814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c97a4e29c4029b1323d11ff431dfce200723419c63200833aeccc6b70e521e4. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ7R2468905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f4a92b2404d6b6398709736508e64f0385ab2e25cad8fc4288d26bba0459bb. 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/QZZ7R2468906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbff56da5cb76266bcd9a510610819edb8ad32b146be1af24be298412382d18. 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/QZZ7R2468907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229a1daf088579393037a8b0b41f6e1471d32a52c339cf9b7e64956833497d3f. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZZ7R2468908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3fbe6ebde3e9e754ae93b995865d2882945953bf2dcf48c4e19b19907e6049. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZZ7R2468912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926567cda904a45aee58cde2c7b75702f462a9f78b728576f15010b0f46302b2. 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/QZZ7R2468913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ccbffad4adc48b28091e5ac81c2d4ba3522e713e1fbdd641de450ded452bfe. 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/QZZ7R2468917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810400f5780b178e10aa9af8ff127d9c5f6c9c029bb55a1f3218cd4f1db064c6. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZZ7R2468918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0800b661a868bb599e085fec10b5ccca3fef52dc8ed849f914a453c6d00ec9. 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/QZZ7V2481173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24f295dbf5447408eb74ff4f08c46f40e781750b7f558736b57cf6d907fe423. 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/QZZ7V2495611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7af6c831d318ee0b8aa3b08b4b4c5fb5f612e1a7b16e9bf81189a37ccc5b908. 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/QZZ7X2431459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38264238ca9401e18b8abf38751f2fcc09999f17896fb3f17b5df147f19dc4e3. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:58:39Z), 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/QT3EX2492767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b07e7f2e97b2ac234f3935ff5b733549b0068fba5f2bd61f15786c915b5af3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QT3EY2466797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421a6ad75b7fee5f94fbc07e25392a282bdcd105179bf9b396e2bd40dca3a93f. 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/QZDA82597247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bd2cb3c29f13bb41ad1b8c783ba44c36f8f8cf68b4d8bf8032ffef4fa00ad5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:20:47Z), 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/QZDA82597250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4e309524a9e024933d0d9b99d5a448943d4890d7ec38627e615e6e81e62915. 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/QZDA82597251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33386f2f4a4c1cc1c470789e4e7c15ff88714c888e62837d408f8dfd82b9f3f7. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZDA82597255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72784bc1cdcb4f8aa5e11a424df016e63430f3d1ea0aee4ac6a537d4df2b4b04. 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/QZHN72545800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ebd647933f5f21ae9fe8a3c1b4a3067cb6ff5b86ac39a5253c31c8098e6511. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZHN72545802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76010866c595d9f8ae579bf9f3d0320fb1a5dfebc1cb188578159228f14f03e. 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/QZHN92576609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dd39a7e461a447ce048e9025839db5345e0f631304c73a99129aef15756985. 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/QZHN92576615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf765ea3ceac663881f3b8207170801d34518fc96aea4fe9ba2cf1da2b0b3930. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZHN92576616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40c092449958a8d08c4aa6931870b87b39c634c0739524d83eae8ef7aceb9e5. 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/QZHN92576617.