1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd6b014d40ef706a5900caedb97536723ebdea5908591cdb70261eafb7e7e36fa. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4564b36b-f45e-45db-90ae-7f3c3499190c.json and https://artists.proofprofile.net/proofs/artist/4564b36b-f45e-45db-90ae-7f3c3499190c.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 → block OTSBitcoinBlock must exist at that height 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 0x0b36dc313dc0149931bb9d9df70d80ebe89ee5836b2d20180d0bbf90204a4547. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR2186795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cb57141679749a3663f4c3598443d95e94fecfc9aa439f655ff99151553485. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR0040657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac645bd4652e2857a7feb20b4771424c162e2cd305d72d6a4e38cb41fe4c10f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2296415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671020b03e247a5f9f0d880670ad0a436a421b9136a7e2830c5c9e15614b6589. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2296412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e47c5499e5ffa0d59654f9b812405b3eb4c21bfc76d321b213a0e1565a7c68. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2296405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66fbd710c6845405feddd68d52d4356a14aa1b3b02687aefce2aa940d6c916f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2296413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857cc8333965589e6ba155e452b84868e97de31c9ae49e1391dab5e2d8fef8a2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2297449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a185a6a484df2482db487971110b74338f88c607c48b44661c9dcd377185d95. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2374440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf820a93f0147a87e8c6610503032eedd10e4fc5019053fa4d2a1e1c6cd749d0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA6D22300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774b22da31ae239529a074d9963c10f7f5566887aacd39c703e9b35034472b65. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GB2LD2310235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae4e12ba2b32f9f483c0322e0b288fe9f5b9ac4a7f5f4c19859764fa908af6c. Chain 2 (Bitcoin): anchored in block 957029 (2026-07-07T11:17:55Z), 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/NL8RL2327817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd6a863f84719614dbd8966bfbb2f5e7c11c0202de102a5023c870d9ae96b54. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL8RL2336252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b43e36d0c62d8c33196c0d36475f6a8b03a0017c239abeddcac9d1f348ac8b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL8RL2336266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa2ce6a84d9ee9f0e56d85c18e17fa3243088374bf5e0f89bf658fa05799dc7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NL8RL2336940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b40fd150547570969c49e8f50ae04a58029ad281479c8bc1c8bf122fcbcffa7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL8RL2336267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9871302a2d679aac6b83f61c09accec798f9bb0491d5c6fc08585b9de01e0f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NL8RL2336268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf232c2093ff0e924817f684b71c5625c7e7e181ecc65dcbf857b0c510b5ec1a5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NL8RL2336270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bdf739c6f50060d0aeda952a1253213d1d7698a215e7d73ddfa1ecf8dfa807. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NL8RL2336300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1e19806e69b1810d2c3a1832034868afdf94ff12fa37bf7f455d93b64bcbae. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL8RL2336301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b8bc079decab9b4c8e3adc52da86e05a8a6c1e21e73105c7c456359c8ffac8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL8RL2428025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd6afc35a961ad4a11f0e9959a32c7768e16a0e07867f8218dda4e78709180c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL8RL2428027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900bcb14e9b35658c5fce1598177d82ce83fea61e213ce117893bb2e75f93fa2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NL8RL2428028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b15723cc4f78fa52a10ed3ae96a7e579a54e2e118216c21a44cc33259f0194. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL8RL2428030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8ed2542963b3fadca63d31e629eeec130d6aa73188fc06102085bb8ce93685. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NL8RL2428032.