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 0x06cbfb678f871fef94ea57e814935581676659ce6bab5adabd7dcdbafbd93e0b. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4848cb0a-cff7-4e73-9c40-782359a4d42d.json and https://artists.proofprofile.net/proofs/artist/4848cb0a-cff7-4e73-9c40-782359a4d42d.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 0xc1c40e2c4142fb939f4f951cc1a4e58dbd0cb4e86dbd91c6793d540f58077f97. 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/FIL6S2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecce467d5a25151016be086ecd4e9b188032eab22666809f27aa81e05eb529ad. 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/FIL6S2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed035e7312f447b5938d8a54fcc9bfd1443d1270b7583055c30e95d0004d7d56. 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/FIL6S2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ba65e6e011022bd57506deab718ad9bd3ec7ade50323ff7103ce52b4777b23. 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/FIL6S2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16fff26923876f839f80ecca5b10076d9d7b4d7db085b4d1d45cc74bd5c97c3. 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/FIL6S2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703d0dc4a03d36c995bb0278263c800c2d03fec0eff9737d7275fdc3dbf652d0. 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/FIL6S2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63fdf9bd1d7f18f93618bc6585fee1e9574c2bb424bf163971a72187aab2b6b. 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/FIL6S2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97fb60fc65507adb9b3da0d4df279b8ebb0124a33dc5a02fe625b47afc6bdb4. 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/FIL6S2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44c66de4082e2308cac3aa50f1e375db2cd9789f711c07c10f8904455af38f0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FIL6S2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686582ef3ccf3360fcb31fdcc7d71f25c78e2957330184fe8615ebbefd7b269a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FIL6S2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5081bcf17f611e5aabf388bff3262c4dd3efcaca68b7ae09615c5da835c69cf1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIL6S2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd163644f826f56c0ad2de7639300af8685fc761cfaec27eb5d04a6c0b7dca2. 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/FIL6S1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c07d0f5963a94393397decccf8ba4f72ca7520e9cbcf09abd479f92c809183. 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/FIL6S1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804f27bd987f45f3554f2e9a16026b60fda7c9ccd03f0a83f1e332401f04a69c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FIL6S1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dbd8001738e6ca3015cf269f4d355d230d724e4c2f95118f1e756950d123f3. 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/FIL6S1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb869a5b111bb64bae895b13bad4921b51eab10d5f06fefc4c2b774b3e6adad7e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:49:06Z), 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/FIL6S1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbbc5e88e122014c5982075e5efde0cd9938534a8096b40d5dd0377c4728c8b. 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/QM4TW2331729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f27d119cbf3c009bf1738117be753245ffd8a0aa8e6dddf3071e47a1f7f9366. 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/QM4TW2331730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94ad9c13ddc09e97cfa6543f89d0e12aeebd1a1bad5890a85999ca6dd0509cf. 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/QM4TW2331731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aca382cfc6cc31440476dbb704850d476f2f44d2a9c5d5e4a10110ca74a3359. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FIL6S1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3617ad96325cb6df730bb90570ceda5969d890912c0471fa75d7211fe8adacd. 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/QM4TW2331732.
Papanapa (Pentti Rasinkangas - Papanapa - Kokoelma parhaita lastenlauluja)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9ad244c4a57b71f32711b4de5a810c4677e9b0244c084bda00a6754e1048cd. 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/FIHUT1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dbe920ccc8b682a9913969ca70170c3f09ef078e80bdfb2f8193cdf472f5a5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FIHUT1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f283cff35d0f71105962106a52855fb1bc60c35e96f8c926491911526ec7ae1. 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/FIHUT1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67195a1851f85d821d5248ba08e5bf62295cec81890a8e1336ef92042555cd3a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FIHUT1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b623b581b1a0912cb327424e44497e0b94711dac8d7cc5d1c5f63e786d431a9. 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/FIHUT1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6401ddabb14a4c51cc73a3c827878499cf2b1aad88c07b4c4976bf66796349e2. 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/FIHUT1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e319514377b23b86cf620ca9bcbe8d9a6c85d2a66aad34798a8f7bcc4932073. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FIHUT1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b24177d7f587760221aeb979a64413cd0d4a75db0e323ad4d0674940af4ef93. 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/FIHUT1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca887de6c68760fc978ae03818b6fc9ae05beb80c6868649b241c0344bd8fce. 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/FIHUT0300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cc454f1ad8a3b20585da8f0a8b048bb6c2bbd839b6f9e3b5f29d83be6dd8d8. 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/FIHUT1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba5454f8474f1b6d9a7968e2e54aa542c4f02309fe1d551e4f6eacc7bf66dc4. 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/FIHUT1600013.