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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1627b9e95ec035a04343a81c68115b77d0cfaa3f4eb1413c16276f640b2f165b. 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/4275e39a-47b7-4506-8bde-20f73dbded1d.json and https://artists.proofprofile.net/proofs/artist/4275e39a-47b7-4506-8bde-20f73dbded1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Party Piet Pablo's Stoere Sinterklaas Hits, 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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b6172eb4013cd388daa777bb499374c43584d24128fab5c4ce56087cd565d3. 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/SE3OH1629792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76967da7589952661d657e52871ddee02079cf9028b23eb7f121a3d9e6119cae. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/SE3OH1629781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1665b739e67a57e0b33b4b05639e54686f52dd7b5605467acd70497f1fadda42. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE3OH1629775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f17fa7d448f8fe0a49247b88c22a5ca175c3d961ffa5f65566eba80e91e0238. 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/SE3OH1629778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4498935ca43613a6c0cc92ba928034d893678e9d8534bcb987c940d853c942a3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SE3OH1629787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43092f27956f6e5cdb2d3f8a43e51aa4ff0b01de1cdfc0b887b17c65ce77c2b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/SE3OH1629793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a8b1d86cf1dc9c2416aa88004a4f428a9eb87422a764d8ee69fcc8d4c8437a. 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/SE3OH1629770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737972f29ca1216227063ef4be9ecd3914509bfba6efe71bbc1caa8aa681d7ef. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/SE3OH1629790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d0fffc312506f74cb8ee0517cadd9d45c4c6b3736ed8253d944e5ce5949dfd. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/SE3OH1629779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10d5f4357e1dcf14d8f9251e178dea3c97d7ad793219bc5b275941aee8ab033. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE3OH1629782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb866bd3e33917a1dc4cba48c1bc313f96cfb17bd961dfc702b374d616dfe496f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/NL2RG1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3354e326326d6087a3817ea46cfae0902e2e705e6a0b9530302426360d205e89. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/NLS6R1873062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dd3d30a3481844324783f37b4849347357ba1637cbf02ab6c4af8e9db58651. 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/NL2RG1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5eb02100c87529ba28a2a6d853e4aa3ac0377316db49c04d2bc726adadef1b5. 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/NL2RG1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ce0da856879b9e1779d519ace8db8979f1bda154fd4c61e06aea6ceccdb582. 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/NL2RG2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1381c682fe3b41560d64f9d4e2c33a964312d0a44e5aa7a61e220eeb16a5f905. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/NL2RG2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1843cf17b730b87348c7b25fc44c71e4517180fe5cd69fb9ae8d280976815e0. 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/NL2RG2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0594002246f9f5390f6c6cc13b2841f8b01870cb4dd687699016b0af8253b0f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/NL2RG2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352ed8fca2bbf5d585e6cc0fc034f4c3747e5dde1ecbaefe3209c8df93c81237. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/NL2RG2100003.
Het Paard van Sinterklaas (Trippel Trap)
Het Paard van Sinterklaas - Trippel Trap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d26ccb3e74a37c281503ebfc635ac919df82a1808a62b163ef7071a40e6f90. 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/NL2RG2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da3678307053eb4f3ea06d38eecc1fffb89d1141041dc4e134066e85050862e. 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/NL2RG2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662767e5134c1786f666542776d6430f8613510f9dfae31ce97fa4aab259f088. 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/NL2RG2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94629fa7b2e924666f9221a1c75d7523f7bfaca193c951c00f30fc69acf4345b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NL2RG2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17094077c79e5e112bd06e59e0ac041662448f9476e1e469c246aed31563a18. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/NL2RG2200031.
De Sint Stunt en nog meer Sinterklaasliedjes van Party Piet Pablo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7733dad565ce035219162d91cef0a3c971908d54651b7ad7c7ad72744e145577. 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/NL2RG2200033.
Niet te Geloven (De Grote Sinterklaasfilm)
Sinterklaas met Party Piet Pablo en Love Piet!
Sinterklaasfeest 2022 met Party Piet Pablo
Dansen op Sinterklaasliedjes van Party Piet Pablo en Love Piet
Sinterklaas Kinderliedjes met Party Piet Pablo
De Beste Sinterklaasliedjes van Party Piet Pablo
De leukste met Party Piet Pablo & Love Piet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8090df62952050db11d0f3de28ea177fcf9d45f637c9ba00d11c92af6ef56b46. 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/NL2RG2200005.
Pietenliefde en meer Sinterklaasliedjes van Party Piet Pablo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5eb02100c87529ba28a2a6d853e4aa3ac0377316db49c04d2bc726adadef1b5. 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/NL2RG1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ce0da856879b9e1779d519ace8db8979f1bda154fd4c61e06aea6ceccdb582. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/NL2RG2100001.
De Pieten Sinterklaas Move en meer Sinterklaasliedjes van Party Piet Pablo
Sinterklaas Klassendans en meer Sinterklaasliedjes van Party Piet Pablo
De Pieten Hype en meer Sinterklaasliedjes van Party Piet Pablo
De Sint voor iedereen en meer Sinterklaasliedjes van Party Piet Pablo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd311137db3b52d0772d374e1902f556f036afb6f5c8206d57d44a3f68a5f5477. 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/NL2RG2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd311137db3b52d0772d374e1902f556f036afb6f5c8206d57d44a3f68a5f5477. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NL2RG2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37325270bcac9766398f89f9439ea8ab898fa5598d7f1140f6a0d506dccbc025. 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/NL2RG2300002.