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 0x718ec4eb5d465b1c73bd56132383d7bd5d1b59fb2ba32c105683ed8c084ced73. 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/0d8939c7-1991-432c-973a-ace82f5881b1.json and https://artists.proofprofile.net/proofs/artist/0d8939c7-1991-432c-973a-ace82f5881b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In at the Deep End (Compiled and Mixed by Tripswitch)
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 0x0650765207ad11a1e78db909a0ff52db2c4bdcfe9fa5ce2a27da45c1d4244967. 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/GB5ML1700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2938a64a2018cc5051a6723e1151edb779e9c6bc19228caaa5bc5535fc5fb73a. 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/GB5ML1900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1d3a736d8dbcc7054e638045ecdfc5492980d6db26dba87681a12c71416778. 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/GB5ML1900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8775896530d04234f0d08aa7cfb167e336c18077db72d1965c973d2f598ca1da. 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/GB5ML1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5923cd09a4b2ce29da615abf5b39300fa0f86a826b6ba991cbc586d5a01a07cf. 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/GB5ML1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0e9a4ee5e5acfeb7913f01148d8316f4652623570b43d494955536d87b4eb6. 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/GB5ML1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a353a816e4224782f7645ca4000060aff182bce8574a566886812fad5ee978. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB5ML1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb879c6ce6db4b1affbe82b97719f91b77f977e0f78da496ff8613a53e3604331. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:58:50Z), 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/GB5ML1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17f60900bddbc9fac3bc1bf1fd6da3fa149fcff4c4343e2b6b3415ec8b989ab. 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/GB5ML1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cd7a841c9446b0c946e0a9eb99696c70f56609c027deb87180f4e123e64b23. 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/GB5ML1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe455e7d01d69f5d6685236faa58fd7eeffa23b435942f49020da445f36d79ea1. 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/GB5ML1000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dfc17cc0ed6af514dec12d4536a6595fcff42abf5baa8de6b7ed6793e061b8. 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/GB5ML1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3386838d968c6467733210d9b73ae3af832f9f40db68da4fe075a2accbb99ab. 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/GB5ML1000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963893d53ffae9a029ba82637a83771b54035d0fe4d22fa510506631ead9b099. 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/GBCZL0700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0000d4ccdc45286fe2c7f759e98eb96c9a11e9b90fa34b56f2c3167afded54ad. 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/GBCZL0500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3897103448ca5bae21f39cbf10a431826376d9d7465199d2774541668a28169. 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/GBCZL0500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd18c3fc5f3a0b49ba7ab841514542ee8bba8bcb4e8d7855c08bb7060367461. 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/GBCZL0500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924605f7a6030c6885eb8a3bc42cefcf9e47e941103c0dbe206d003e5df22342. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBCZL0500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5e766a7bbf1b603fea51315d14d676634010bc76c913d3126c43abea60e58a. 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/GBCZL0500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a94e38209ed62185b98182c663d86589196e7d58577900d9ab220e6e163e177. 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/GBCZL0500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4e44cd4e5f81c1617aa27e541cfb3be6abf84595d8d79f6c0f7579217f28e1. 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/GBCZL0500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae04cf33fb99a2febb25334c40fc1e2d63b0e7d83209347f8fd21b5f5a9b23fb. 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/GBCZL0500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fb010e5257d88f20c23883d5f141d273963ca0249989bead57e42606ef6e2e. 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/GBCZL0500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc444215986a9d748c4679a94baac2620e98fa172e848fcab10913511617a1ce. 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/GBCZL0500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52172b6f3e342763a07816afa0692c54b28c5609375dfb7aa6bc8ee160ca1d3f. 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/GB5ML2000002.
Big Bad Blue (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
Magnetic Quartz - Hernan Cattaneo & Tripswitch Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38d636c00a36d68083d1074e84a6f16b14bc44569e905df911ff668dc3c32ad. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:26:31Z), 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/GB5ML1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86d115921ab302d44bea1cb0b5287e4fa61879454a70e327826c5198e51baf2. 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/GB5ML1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b94860cc90901bcbee880a1fe9e029cd5a58f1df3d466ffac0bffce6986216b. 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/GB5ML1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c0c18a94a58731ea88f49ad5d175964315546f880c7e8a5147c476476dd5fe. 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/GB5ML1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ac97fe9453976307c87a2964c0e18ef5d018fcf62aba039c23c377caa9fed6. 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/AU4S41200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcede3c17f8debafde3e6e3eb85ebbbc23603cf69ada5b1d1c23537036565e18c. 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/GB5ML1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ee93bf0b7c9ee9ab9efe1b1bb41ecbd4f6bbd6805617e7557c0c6469bdab1b. 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/UKU932114511.
Café del Mar Ibiza Chillout Mix III (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65ddff27647b6716b40c8ffa6622795b8b925eb682978f896a39ad5d3600aac. 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/ES8742303007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924605f7a6030c6885eb8a3bc42cefcf9e47e941103c0dbe206d003e5df22342. 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/GBCZL0500013.