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 0x27e14ad614e34e976705e83a59430d3e20431dc7590a5622077ef0a2e35ac5a0. 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/634912d4-51f8-408c-9d68-dd34026d546f.json and https://artists.proofprofile.net/proofs/artist/634912d4-51f8-408c-9d68-dd34026d546f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lullabies for Gentle Dreaming: Soft Nursery Rhymes to Put Your Baby to Sleep
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 0x58b9c3240315e2e5d333761fbb8399001fd29a07fb6eb0877d016257ba044023. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAFP2101326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f30ddb4fe7fa0c29021259c1e916aeb933f6ac83cc88c245f38869d3b081db. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAFP2101330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dc598be8fa8ea3cfb63c35f4638aa526145eb328680bf0627c39bd57440446. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAFP2101337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2875d61fa7f2b1bc1da8b8e2c086def29aeae1180d05617aa1ca520d1ea7c04. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAFP2101350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5012e25de1e551e6b13725463855742d7e6ffcbd878034c75e398399e88d0f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAFP2101359.
Glory, Hallelujah! Christmas Carols: Traditional Carols and Christmas Piano Classics for a Peaceful Holiday Season
Nighttime in Toyland (Lullaby Music for Sweet Dreaming)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c292bfa03dc945ebc34b08a31add4f5c1fb2f09cfba36d878ebe82b139a6d0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:57:44Z), 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/FRX762284554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a8c0ec7d810540dea56e0713e318dd5b57b6ef8fc9e273dc34646390320597. 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/FRX762284556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643491dcfa8c18ace1a07169b86e510a2612f694f105cc69c64148971c501979. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FRX762284559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb517962a8838844cf122e24ead207fb6dc3d39e89e6b86750a6815345a7b10. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX762284561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad19fadc07d30fe1e7a114b1a1f89d8d82d58cecf7b20c1e2d36a7f450eb375. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/FRX762284562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15130fa0069579c71cf9a1d3669cfe7c9af56b1628b7090ae41bc077fd056a9. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/FRX762284563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec9d56951efee74660fdc966bf6a32c7acc102edbfabd784d293a77ad113a55. 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/FRX762284564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ce20c53e7e117f1ce7d8bb26bd4766351b8698863df19d0aeaa227f0a277bf. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:55:43Z), 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/FRX762284565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f719d4651fa076bfa87e86b03ab2530a0d4832de2babaf957992764493d14b3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRX762284567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b52db256eadc485d4428df885093a443541ad4e1db14c258608149c632a84b0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:03:49Z), 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/FRX762284569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e6033a0353fef1aa93165d1407f4d3a03c48de53154bf50930a8c70e696030. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FRX762284570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fd6ce0e0da1e6d7453943d28318ed2aba9f8401fcc2c4db4809f6f67ae6e4b. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FRX762284571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e156f2d55e08f4b222d4f33757b3fefa24571d96f8d7e5339ec274e8d5dc57a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:04:03Z), 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/FRX762284572.
Oh Where, Oh Where Has My Little Dog Gone?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bc5c690460743ef86ff74363d6e234eafaacc01adb3d255914b62afd6dd8a7. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/FRX762284573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cea0f137f23000ef5d4a2932f688c0ed7b7f541ca611ccd664b87a979d44519. 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/FRX762284574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbe0459a69422bdc1ab4841da7d3ae1989dc7e3d8e76d9f25dec1afbd511428. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:24:24Z), 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/FRX762284575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb568d361ad8f555f1e18c38ec1decc2b52648f09a3d6901515483d286871cc1b. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:52:55Z), 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/FRX762284576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a268d0abdce45926a3368bcbe298f202f8b68759d1902e33fe9e5814d19eb8f. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/FRX762284577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9226b6602fb301023e8e4f8df5999e003b58e270cc15937100254b36ff48b81. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX762284578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d24b00895fd6de7f3e4b996070f3bef87d8d1c157ced2d6f6e3cf2d8ec6b43f. 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/FRX762284579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ac6ae35cf10bc3358723dde3dbb8fe1f9c9b6787e0c27ea8897bab2c20a260. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DGA0H2314638.