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 0xd3a92de3513749c17c03f35867f7edc9e818b76478cc288b3e59f59ebb81c6f6. 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/6eead459-4bda-4a06-96ee-deab3468b71f.json and https://artists.proofprofile.net/proofs/artist/6eead459-4bda-4a06-96ee-deab3468b71f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bedtime Relaxing White Noise Piano Lullabies, Vol. 1
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 0xc4ad699452c255faa7bf124fea931dedee56ff0e6f05f9a4bef5d9d55dd21eb4. 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/ZZOPM2241679.
Bedtime Lullabies for Babies to Go to Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf1805743d6563db6aef621317207ccac3d1d8f431bb767c38a0f9ec0dad53f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ZZOPM2241299.
Twinkle Twinkle Little Star - Longer Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06b2a345c6b99dd23b36eb1f47244d013c5edb1e8684790fc2c749a0ef4889a. 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/ZZOPM2241300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91f72eaaa00678e67747f122b11c1b5b5bb759abab1259761adf95da8ad76a5. 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/ZZOPM2241301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed02debaf4dbb76c61f2ecbe30d73782584741881cc3e64c76601ff31d96704e. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/ZZOPM2241302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738fb302324df8f04115625c3218fd251fb140cbf3a6af0c39e52c9d3c54444d. 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/ZZOPM2241303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065fdabd68ffd7005f1d4caebb4eef719d229005c11af4e6f5db816860610956. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/ZZOPM2241304.
Old MacDonald Had a Farm - Longer Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e8973ee958cca4e90ff7699e89f6c9236a446540ddbfc699e87e3e035e3256. 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/ZZOPM2241305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbaab680d83e363ed9bbaa87de752fb7ac00379ec63d59028a0b85eb6a41fd3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ZZOPM2241306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc541461a0ccc3655be2e245025a7fed34cdd61f95b9a375a32b3ae556b7e75a. 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/ZZOPM2241307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f769eb522767dd1f0200882602f0cdbf7cb3b2c9bea04324e458f2cf4f1740. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ZZOPM2241308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e8f619a0e85783ee2ee0cf6820c7753f736492d0b16bb726e0225e27d6bec0. 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/ZZOPM2241309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd11f776b8de95c6bb7d0177fc47e14c0c26fc5f1f539190871c2ee557cfe4ee. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:40:38Z), 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/ZZOPM2241310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6599030d213ca9cbadc9f2c8c12c2a5c43128ab7b513e6531cfda5dee327d5c5. 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/ZZOPM2241311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d037e4dbb47c071882cf1ecee6ff51b49cf27d9aae6e0db46892e5dcb609eb5. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:21:43Z), 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/ZZOPM2241312.
Swing Low, Sweet Chariot - Longer Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eeb3b32c1d46e49e907ff1ceaf785a5ba907317b0dc0721561ab1a03b046dc2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:08:38Z), 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/ZZOPM2241313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76545ec18ff46e3562557f48a8bbf4e76fceb983e2206c92dc94ab7eb455453c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ZZOPM2223064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b21619ec020503bf4a55844e5ed7d2757816fea1dcdcfc6579e6d7b62f020b. 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/ZZOPM2223067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b21aa763b0a87598485d76c715bb2bcc30e84333b1169ae6e4d7a7fd5ef13e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:04:28Z), 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/ZZOPM2223069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b3e577a006fff0c642cc64b3a05b86aa6488f2ca4c5d31bcfccbee0df521bd. 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/ZZOPM2223073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e7082ee3cc7fe4ddeee2d0d78a5fe85fcf9addf419a7f35045052e02c1e36b. 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/ZZOPM2223076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8037c7d8c6d3d324a6b16dbff29398e707766a9375777f135dd30c41f66995a. 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/ZZOPM2223078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f52db00dadb9e29fd9b28165f88a1dba91d07da604cefd65d0abbe3afd5c80. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:25:41Z), 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/ZZOPM2237156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47858b659370b164ca00626550c31ed93ad43a83a29e5e7aca6f4015d4ef4f6. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:32:57Z), 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/ZZOPM2120354.