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 0x4f10be3afa756e09c6ef9940337e222cc0c338474c3637fb492eba5f3d4442a4. 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/d7c51b8a-f5d8-419e-b254-1da289368078.json and https://artists.proofprofile.net/proofs/artist/d7c51b8a-f5d8-419e-b254-1da289368078.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 0x1b4c9158e22c1921d9f316183b341aa3c7a60221d2a570f1861725d48c28a4cd. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/US26J0700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ad07b0894ba800704b0ab71983e9adaf76a225f7211fc15f03b170d0e1cfac. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:42:45Z), 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/US26J1000233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875072e23f4453dda2e31d0a1e54006ea4c82c5fc586ea109d8c203cbbc2b8f6. 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/USP3J1005683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521398be4df9f24d8e5338fbdf7b1613b6469832d9cf4977f90e5da9b0545d29. 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/USP3J1005684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb2ee1e389c0760c71d0c0a75ee2f1023f7d6cf30ea34a771805f800c4adf21. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USP3J1005687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6656713e36c74caeaa76e9093185b2ae929095532ff1b8c3e6dfb88bd88ed03. 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/USP3J1005689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd482cf70bb07548bad1abec78443bf03f4d7eda0a073f0ab3473a7520e304b7. 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/USP3J1005691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1055a276cb123091910cc2730fcf80d6dda2181160e66cbc5bfa1e8876d716d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USP3J1005692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4d428080873289c81b57661aa186f025ecf2515c61741789f7321cd876ff19. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:30:43Z), 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/USP3J1005693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6456b156c3dd33fb6cbc726b0c3af5552f12c45ffcff74de433c2bb96fe4de. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USP3J1005694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875072e23f4453dda2e31d0a1e54006ea4c82c5fc586ea109d8c203cbbc2b8f6. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/USP3J1005683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521398be4df9f24d8e5338fbdf7b1613b6469832d9cf4977f90e5da9b0545d29. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USP3J1005684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9dafa786fef85dc671bba2070e2e395985526451787cd334f14a1f58f372c6. 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/USP3J1005685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc45a91815a1954959461c55abc0db29fe72b0062b7f9d2e6372fac8f133418. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USP3J1005686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb2ee1e389c0760c71d0c0a75ee2f1023f7d6cf30ea34a771805f800c4adf21. 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/USP3J1005687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03573e87cf094e60f2a5c94913ba3ffa949dfda1a1439df6b761bb95e509c3c1. 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/USP3J1005688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6656713e36c74caeaa76e9093185b2ae929095532ff1b8c3e6dfb88bd88ed03. 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/USP3J1005689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2c9e7b97e72b52b152ba2a87b8b71200f76948ad06b0b39b34060694bfea5a. 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/USP3J1005690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd482cf70bb07548bad1abec78443bf03f4d7eda0a073f0ab3473a7520e304b7. 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/USP3J1005691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1055a276cb123091910cc2730fcf80d6dda2181160e66cbc5bfa1e8876d716d. 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/USP3J1005692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6456b156c3dd33fb6cbc726b0c3af5552f12c45ffcff74de433c2bb96fe4de. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USP3J1005694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adf7c2b67cfd300df891cecd214a1a0f57a4fc10c93ff1a2d910e7052e10a53. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USP3J0801787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec7f15cf6538cca8509c3929d25f33406d7a5c70e12bc48831d909d6b620822. 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/USP3J0801789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6958eb5f364fc7b00b815a2cde293e47e920be2806150d1fb501290d6257fd. 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/USP3J0801791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffad191d2a83801b6e210f36dec248b240b5cd232012661b95ad5960a4c956a. 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/USP3J0801792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69cda77e03f9e4ddae7b3a1c2dfe874d7641c1180fb3bf9b7889c28d0b5dcf0. 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/USP3J0801793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a58d4dc86c37a7388cf20edb7dffbb5093adecb634fa917dfa43494febd6019. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:12:28Z), 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/USP3J0801794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a93ba368a4387e0a96fa7aadd79918efdfb7239038666899a75bbf78c45526b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USP3J0801798.
Harp the Herald Angels Swing: Holidays in Harmonicaland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfa5308480ed2d871dca283f6fd12510952519258b9a4012d35c37ede85ea5e. 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/US7851600187.
Goodnight Baby: Soothing Music for a Peaceful Sleep (Bright Mind Kids), Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1344a435272152980cbcb4b25b1188bb8227ed45154f260534739bd27bd39b98. 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/US3L61209658.
Sound Sleep Series: Goodnight Little One (Clever Kids Collection), Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec430db92940025be5b8ccc6677c0f2cec12e068d5e9603b660d180b5268fa56. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/US3L61210909.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Sound Sleep Series: Goodnight Little One (Clever Kids Collection), Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49e88b3559f87f4752bd5f4e534db2d71c4d8b5875a22361e0f5de554253007. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/US3L61210931.