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 0xfe61015dcdbd5fb9308aa6e53397c3f2a0c29e3cb698be2e00ca9caf0cb9f03d. 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/daf800ba-4a0b-4a1e-89ab-5ae48f912f58.json and https://artists.proofprofile.net/proofs/artist/daf800ba-4a0b-4a1e-89ab-5ae48f912f58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Storybook Storytellers: Little Mermaid, The Frog Prince, Three Little Pigs, Hansel & Gretel
Storybook Storytellers: Story of Moses, Jonah & The Whale, Daniel & the Lion's Den
Storybook Storytellers: Red Riding Hood, Snow White, Cinderella
Storybook Storytellers: Noah & The Ark, David & Goliath, Joseph & His Brothers
Storybook Storytellers: Story of Abraham, Story of Esther, Samson & Delilah, Story of Ruth
Storybook Storytellers: Jack and the Beanstalk, Rumpelstiltskin, The Three Bears
いっしょに歌おう こどもの歌ベスト
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 0xf49b0e5d4092d13334f2f2493486a84078fb6bcf5463ad103e9baf13fbfeed49. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CASD11000435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab8fd4d3194da6999194eaa3170262a10fa4a55f74550253ffd16250e4642e4. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CASD11200590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bdcfc6cee43a0f129bfa1bef5685b303b27af4b7db03e819e1a70ecf1b9cc0. 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/CASD11200591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813db2a1722fa47a15f09cf32849992b1c02506e3211f745c6dbf660252e775f. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/CASD11200592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bfcc9d868a6a32836b49bb1bbfa9d05b8464ba370d6dbceed5792d3640e528. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CASD11200593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abdda123f96ff4cd5b72d7c61b66cd33f2121c8ad2245ebc0462055c40502e2. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:51:25Z), 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/CASD11200598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0788f2b1696c5c72c63e8b5cbedc584c9f18b4586754261fb612fc20305462. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:42:20Z), 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/CASD11200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb27ea851868f6ad4dc9e24c2ef2b569f4b8cf903a40a15f74fbc6cc8d1db578. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:36:32Z), 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/CASD10701092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c174e80a96f03ce568c3fd50e9360e1b19c5d31edbc27d463164954f67bdce. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/CASD11000353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819d504e23013a28d591ff33674579ddde3cde04394c2964a2a653e2c355315d. 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/CASD10800519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2767a4dfa059d0c02db0bc7b930cd757c96b7bcd5937bc1e55390f6139aa387f. 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/CASD10800546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d5185d44de12419d501cbadfd6ccfb5ae369ee7d3dfe37698db0eb93e17280. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:55:27Z), 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/CASD10800531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e6be6e3607f1598453380ef69bb3cefb2d1db15dfda56f9bc7645694d5a0d1. 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/CASD10800549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bd3ad9f4be0f45a2195a8c320e907c6f79f340cb321b3c6d8079eb41fe4c19. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:19:44Z), 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/CASD10800564.
Halloween Fun! Sing-Along Songs from A-Z
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5f74ac683f61a950a8e8361a3eb0fdeb4563bc4443dfcfcc9573241a2a4115. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:03:07Z), 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/CASD10500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5b92f7cd77cc5ab6e950f35916d41a5c3aba9e83b980653b9951832a22acfa. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/CASD10800213.
Songs & Games for the Road (Gold Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a039f5b39b52188a9ee9b9a2079c14c2b4aab6f6c639e7ee533638927d0d506. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:40Z), 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/CASD10600346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be51cfd51b0fcc51b53f2018f9870845992065d849851aeb685ef3f9979e0a9. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:18:38Z), 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/CASD10801198.
Do the Hokey Pokey: Learning with Action Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ccc670032bdb026657f36c80d3948cb7abed26487f46acc186c39672bc2b0a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:09:39Z), 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/CASD10800533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20030cd346a84244e73760873b05a7e1db1d5da744450b68d555324aaf8dc38b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:08:59Z), 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/CASD10608495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac94870f0dd3beb549d4e5760aa457a6a69c9dbbbe80746a101db6aea91bb7f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:45Z), 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/CASD10500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339eef82091e56bf338f2343503f466d1a0f8afc09d3dcbef481c5aa6362ac7f. 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/CASD10610625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8342915486b1658c9a252bec246e93e075ae78277e37dae111ca61394cf8ccf1. 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/CASD11400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc480d3bd3a9d1523fe41b403ccab8845a7fafe7d18e77d7ae01db8d96546d9. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/CASD11400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48a3d5879402c3000d81272a04b36f16ccb0aba69cc52c0763a9d348e51490e. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/CASD11400362.